Seattle (SEA) to Ontario (ONT), July 2027: flights from $110 one way

Lowest published fares in July 2027: $215 round trip, Axel-exclusive, Frontier Airlines, nonstop, Jul 7–10, 2027; $110 one way, Axel-exclusive, Frontier Airlines, nonstop, Jul 7, 2027; 188 priced flights on 94 exact dates, 1 adult, economy, checked Oct 29, 2026.

Compare flight prices from Seattle to Ontario for your dates. There are no recent complete one-adult round trips here to set a price target.

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Flights in July 2027

Lowest published fares in July 2027: $215 round trip, Axel-exclusive, Frontier Airlines, nonstop, Jul 7–10, 2027; $110 one way, Axel-exclusive, Frontier Airlines, nonstop, Jul 7, 2027; 188 priced flights on 94 exact dates, 1 adult, economy, checked Oct 29, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

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Seattle (SEA) to Ontario (ONT): July 2027

Travel datesAirlineStopsTotal price
Jul 1, 2027 · One way · Compare return dates departing Jul 1, 2027Frontier AirlinesNonstopAxel-exclusive $126.50
Jul 1, 2027 · One way · Compare return dates departing Jul 1, 2027Alaska AirlinesNonstopAxel-exclusive $201.25
Jul 1, 2027 – Jul 4, 2027 · 3 nights · Compare return dates departing Jul 1, 2027Frontier AirlinesNonstopAxel-exclusive $247.26
Jul 1, 2027 – Jul 4, 2027 · 3 nights · Compare return dates departing Jul 1, 2027Alaska AirlinesNonstopAxel-exclusive $389.86
Jul 1, 2027 – Jul 8, 2027 · 7 nights · Compare return dates departing Jul 1, 2027Frontier AirlinesNonstopAxel-exclusive $231.13
Jul 1, 2027 – Jul 8, 2027 · 7 nights · Compare return dates departing Jul 1, 2027Alaska AirlinesNonstopAxel-exclusive $364.43
Jul 2, 2027 · One way · Compare return dates departing Jul 2, 2027Frontier AirlinesNonstopAxel-exclusive $126.50
Jul 2, 2027 · One way · Compare return dates departing Jul 2, 2027Alaska AirlinesNonstopAxel-exclusive $201.25
Jul 2, 2027 – Jul 5, 2027 · 3 nights · Compare return dates departing Jul 2, 2027Frontier AirlinesNonstopAxel-exclusive $247.26
Jul 2, 2027 – Jul 5, 2027 · 3 nights · Compare return dates departing Jul 2, 2027Alaska AirlinesNonstopAxel-exclusive $389.86
Jul 2, 2027 – Jul 6, 2027 · 4 nights · Compare return dates departing Jul 2, 2027Frontier AirlinesNonstopAxel-exclusive $247.26
Jul 2, 2027 – Jul 6, 2027 · 4 nights · Compare return dates departing Jul 2, 2027Alaska AirlinesNonstopAxel-exclusive $389.86
Jul 2, 2027 – Jul 9, 2027 · 7 nights · Compare return dates departing Jul 2, 2027Frontier AirlinesNonstopAxel-exclusive $231.13
Jul 2, 2027 – Jul 9, 2027 · 7 nights · Compare return dates departing Jul 2, 2027Alaska AirlinesNonstopAxel-exclusive $364.43
Jul 3, 2027 · One way · Compare return dates departing Jul 3, 2027Frontier AirlinesNonstopAxel-exclusive $126.50
Jul 3, 2027 · One way · Compare return dates departing Jul 3, 2027Alaska AirlinesNonstopAxel-exclusive $201.25
Jul 3, 2027 – Jul 6, 2027 · 3 nights · Compare return dates departing Jul 3, 2027Frontier AirlinesNonstopAxel-exclusive $247.26
Jul 3, 2027 – Jul 6, 2027 · 3 nights · Compare return dates departing Jul 3, 2027Alaska AirlinesNonstopAxel-exclusive $389.86
Jul 3, 2027 – Jul 10, 2027 · 7 nights · Compare return dates departing Jul 3, 2027Frontier AirlinesNonstopAxel-exclusive $231.13
Jul 3, 2027 – Jul 10, 2027 · 7 nights · Compare return dates departing Jul 3, 2027Alaska AirlinesNonstopAxel-exclusive $364.43
Jul 4, 2027 · One way · Compare return dates departing Jul 4, 2027Frontier AirlinesNonstopAxel-exclusive $126.50
Jul 4, 2027 · One way · Compare return dates departing Jul 4, 2027Alaska AirlinesNonstopAxel-exclusive $201.25
Jul 4, 2027 – Jul 7, 2027 · 3 nights · Compare return dates departing Jul 4, 2027Frontier AirlinesNonstopAxel-exclusive $231.13
Jul 4, 2027 – Jul 7, 2027 · 3 nights · Compare return dates departing Jul 4, 2027Alaska AirlinesNonstopAxel-exclusive $364.43
Jul 4, 2027 – Jul 11, 2027 · 7 nights · Compare return dates departing Jul 4, 2027Frontier AirlinesNonstopAxel-exclusive $231.13
Jul 4, 2027 – Jul 11, 2027 · 7 nights · Compare return dates departing Jul 4, 2027Alaska AirlinesNonstopAxel-exclusive $364.43
Jul 5, 2027 · One way · Compare return dates departing Jul 5, 2027Frontier AirlinesNonstopAxel-exclusive $126.50
Jul 5, 2027 · One way · Compare return dates departing Jul 5, 2027Delta Air LinesNonstopAxel-exclusive $207.00
Jul 5, 2027 – Jul 8, 2027 · 3 nights · Compare return dates departing Jul 5, 2027Frontier AirlinesNonstopAxel-exclusive $231.13
Jul 5, 2027 – Jul 8, 2027 · 3 nights · Compare return dates departing Jul 5, 2027Delta Air LinesNonstopAxel-exclusive $375.18
Jul 5, 2027 – Jul 12, 2027 · 7 nights · Compare return dates departing Jul 5, 2027Frontier AirlinesNonstopAxel-exclusive $231.13
Jul 5, 2027 – Jul 12, 2027 · 7 nights · Compare return dates departing Jul 5, 2027Delta Air LinesNonstopAxel-exclusive $375.18
Jul 6, 2027 · One way · Compare return dates departing Jul 6, 2027Frontier AirlinesUp to 1 stop each wayAxel-exclusive $161.00
Jul 6, 2027 · One way · Compare return dates departing Jul 6, 2027Alaska AirlinesNonstopAxel-exclusive $201.25
Jul 6, 2027 – Jul 9, 2027 · 3 nights · Compare return dates departing Jul 6, 2027Frontier AirlinesUp to 1 stop each wayAxel-exclusive $265.63
Jul 6, 2027 – Jul 9, 2027 · 3 nights · Compare return dates departing Jul 6, 2027Alaska AirlinesNonstopAxel-exclusive $364.43
Jul 6, 2027 – Jul 13, 2027 · 7 nights · Compare return dates departing Jul 6, 2027Frontier AirlinesUp to 1 stop each wayAxel-exclusive $265.63
Jul 6, 2027 – Jul 13, 2027 · 7 nights · Compare return dates departing Jul 6, 2027Alaska AirlinesNonstopAxel-exclusive $364.43
Jul 7, 2027 · One way · Compare return dates departing Jul 7, 2027Frontier AirlinesNonstopAxel-exclusive $110.00
Jul 7, 2027 · One way · Compare return dates departing Jul 7, 2027Alaska AirlinesNonstopAxel-exclusive $175.00
Jul 7, 2027 – Jul 10, 2027 · 3 nights · Compare return dates departing Jul 7, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 7, 2027 – Jul 10, 2027 · 3 nights · Compare return dates departing Jul 7, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 7, 2027 – Jul 14, 2027 · 7 nights · Compare return dates departing Jul 7, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 7, 2027 – Jul 14, 2027 · 7 nights · Compare return dates departing Jul 7, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 8, 2027 · One way · Compare return dates departing Jul 8, 2027Frontier AirlinesNonstopAxel-exclusive $110.00
Jul 8, 2027 · One way · Compare return dates departing Jul 8, 2027Alaska AirlinesNonstopAxel-exclusive $175.00
Jul 8, 2027 – Jul 11, 2027 · 3 nights · Compare return dates departing Jul 8, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 8, 2027 – Jul 11, 2027 · 3 nights · Compare return dates departing Jul 8, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 8, 2027 – Jul 15, 2027 · 7 nights · Compare return dates departing Jul 8, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 8, 2027 – Jul 15, 2027 · 7 nights · Compare return dates departing Jul 8, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 9, 2027 · One way · Compare return dates departing Jul 9, 2027Frontier AirlinesNonstopAxel-exclusive $110.00
Jul 9, 2027 · One way · Compare return dates departing Jul 9, 2027Alaska AirlinesNonstopAxel-exclusive $175.00
Jul 9, 2027 – Jul 12, 2027 · 3 nights · Compare return dates departing Jul 9, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 9, 2027 – Jul 12, 2027 · 3 nights · Compare return dates departing Jul 9, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 9, 2027 – Jul 16, 2027 · 7 nights · Compare return dates departing Jul 9, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 9, 2027 – Jul 16, 2027 · 7 nights · Compare return dates departing Jul 9, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 10, 2027 · One way · Compare return dates departing Jul 10, 2027Frontier AirlinesNonstopAxel-exclusive $110.00
Jul 10, 2027 · One way · Compare return dates departing Jul 10, 2027Alaska AirlinesNonstopAxel-exclusive $175.00
Jul 10, 2027 – Jul 13, 2027 · 3 nights · Compare return dates departing Jul 10, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 10, 2027 – Jul 13, 2027 · 3 nights · Compare return dates departing Jul 10, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 10, 2027 – Jul 17, 2027 · 7 nights · Compare return dates departing Jul 10, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 10, 2027 – Jul 17, 2027 · 7 nights · Compare return dates departing Jul 10, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 11, 2027 · One way · Compare return dates departing Jul 11, 2027Frontier AirlinesNonstopAxel-exclusive $110.00
Jul 11, 2027 · One way · Compare return dates departing Jul 11, 2027Alaska AirlinesNonstopAxel-exclusive $175.00
Jul 11, 2027 – Jul 14, 2027 · 3 nights · Compare return dates departing Jul 11, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 11, 2027 – Jul 14, 2027 · 3 nights · Compare return dates departing Jul 11, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 11, 2027 – Jul 18, 2027 · 7 nights · Compare return dates departing Jul 11, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 11, 2027 – Jul 18, 2027 · 7 nights · Compare return dates departing Jul 11, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 12, 2027 · One way · Compare return dates departing Jul 12, 2027Frontier AirlinesNonstopAxel-exclusive $110.00
Jul 12, 2027 · One way · Compare return dates departing Jul 12, 2027Delta Air LinesNonstopAxel-exclusive $180.00
Jul 12, 2027 – Jul 15, 2027 · 3 nights · Compare return dates departing Jul 12, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 12, 2027 – Jul 15, 2027 · 3 nights · Compare return dates departing Jul 12, 2027Delta Air LinesNonstopAxel-exclusive $349.00
Jul 12, 2027 – Jul 19, 2027 · 7 nights · Compare return dates departing Jul 12, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 12, 2027 – Jul 19, 2027 · 7 nights · Compare return dates departing Jul 12, 2027Delta Air LinesNonstopAxel-exclusive $349.00
Jul 13, 2027 · One way · Compare return dates departing Jul 13, 2027Frontier AirlinesUp to 1 stop each wayAxel-exclusive $140.00
Jul 13, 2027 · One way · Compare return dates departing Jul 13, 2027Alaska AirlinesNonstopAxel-exclusive $175.00
Jul 13, 2027 – Jul 16, 2027 · 3 nights · Compare return dates departing Jul 13, 2027Frontier AirlinesUp to 1 stop each wayAxel-exclusive $245.00
Jul 13, 2027 – Jul 16, 2027 · 3 nights · Compare return dates departing Jul 13, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 13, 2027 – Jul 20, 2027 · 7 nights · Compare return dates departing Jul 13, 2027Frontier AirlinesUp to 1 stop each wayAxel-exclusive $245.00
Jul 13, 2027 – Jul 20, 2027 · 7 nights · Compare return dates departing Jul 13, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 14, 2027 · One way · Compare return dates departing Jul 14, 2027Frontier AirlinesNonstopAxel-exclusive $110.00
Jul 14, 2027 · One way · Compare return dates departing Jul 14, 2027Alaska AirlinesNonstopAxel-exclusive $175.00
Jul 14, 2027 – Jul 17, 2027 · 3 nights · Compare return dates departing Jul 14, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 14, 2027 – Jul 17, 2027 · 3 nights · Compare return dates departing Jul 14, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 14, 2027 – Jul 21, 2027 · 7 nights · Compare return dates departing Jul 14, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 14, 2027 – Jul 21, 2027 · 7 nights · Compare return dates departing Jul 14, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 15, 2027 · One way · Compare return dates departing Jul 15, 2027Frontier AirlinesNonstopAxel-exclusive $110.00
Jul 15, 2027 · One way · Compare return dates departing Jul 15, 2027Alaska AirlinesNonstopAxel-exclusive $175.00
Jul 15, 2027 – Jul 18, 2027 · 3 nights · Compare return dates departing Jul 15, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 15, 2027 – Jul 18, 2027 · 3 nights · Compare return dates departing Jul 15, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 15, 2027 – Jul 22, 2027 · 7 nights · Compare return dates departing Jul 15, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 15, 2027 – Jul 22, 2027 · 7 nights · Compare return dates departing Jul 15, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 16, 2027 · One way · Compare return dates departing Jul 16, 2027Frontier AirlinesNonstopAxel-exclusive $110.00
Jul 16, 2027 · One way · Compare return dates departing Jul 16, 2027Alaska AirlinesNonstopAxel-exclusive $175.00
Jul 16, 2027 – Jul 19, 2027 · 3 nights · Compare return dates departing Jul 16, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 16, 2027 – Jul 19, 2027 · 3 nights · Compare return dates departing Jul 16, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 16, 2027 – Jul 23, 2027 · 7 nights · Compare return dates departing Jul 16, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 16, 2027 – Jul 23, 2027 · 7 nights · Compare return dates departing Jul 16, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 17, 2027 · One way · Compare return dates departing Jul 17, 2027Frontier AirlinesNonstopAxel-exclusive $110.00
Jul 17, 2027 · One way · Compare return dates departing Jul 17, 2027Alaska AirlinesNonstopAxel-exclusive $175.00
Jul 17, 2027 – Jul 20, 2027 · 3 nights · Compare return dates departing Jul 17, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 17, 2027 – Jul 20, 2027 · 3 nights · Compare return dates departing Jul 17, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 17, 2027 – Jul 24, 2027 · 7 nights · Compare return dates departing Jul 17, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 17, 2027 – Jul 24, 2027 · 7 nights · Compare return dates departing Jul 17, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 18, 2027 · One way · Compare return dates departing Jul 18, 2027Frontier AirlinesNonstopAxel-exclusive $110.00
Jul 18, 2027 · One way · Compare return dates departing Jul 18, 2027Alaska AirlinesNonstopAxel-exclusive $175.00
Jul 18, 2027 – Jul 21, 2027 · 3 nights · Compare return dates departing Jul 18, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 18, 2027 – Jul 21, 2027 · 3 nights · Compare return dates departing Jul 18, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 18, 2027 – Jul 25, 2027 · 7 nights · Compare return dates departing Jul 18, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 18, 2027 – Jul 25, 2027 · 7 nights · Compare return dates departing Jul 18, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 19, 2027 · One way · Compare return dates departing Jul 19, 2027Frontier AirlinesNonstopAxel-exclusive $110.00
Jul 19, 2027 · One way · Compare return dates departing Jul 19, 2027Delta Air LinesNonstopAxel-exclusive $180.00
Jul 19, 2027 – Jul 22, 2027 · 3 nights · Compare return dates departing Jul 19, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 19, 2027 – Jul 22, 2027 · 3 nights · Compare return dates departing Jul 19, 2027Delta Air LinesNonstopAxel-exclusive $349.00
Jul 19, 2027 – Jul 26, 2027 · 7 nights · Compare return dates departing Jul 19, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 19, 2027 – Jul 26, 2027 · 7 nights · Compare return dates departing Jul 19, 2027Delta Air LinesNonstopAxel-exclusive $349.00
Jul 20, 2027 · One way · Compare return dates departing Jul 20, 2027Frontier AirlinesUp to 1 stop each wayAxel-exclusive $140.00
Jul 20, 2027 · One way · Compare return dates departing Jul 20, 2027Alaska AirlinesNonstopAxel-exclusive $175.00
Jul 20, 2027 – Jul 23, 2027 · 3 nights · Compare return dates departing Jul 20, 2027Frontier AirlinesUp to 1 stop each wayAxel-exclusive $245.00
Jul 20, 2027 – Jul 23, 2027 · 3 nights · Compare return dates departing Jul 20, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 20, 2027 – Jul 27, 2027 · 7 nights · Compare return dates departing Jul 20, 2027Frontier AirlinesUp to 1 stop each wayAxel-exclusive $245.00
Jul 20, 2027 – Jul 27, 2027 · 7 nights · Compare return dates departing Jul 20, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 21, 2027 · One way · Compare return dates departing Jul 21, 2027Frontier AirlinesNonstopAxel-exclusive $110.00
Jul 21, 2027 · One way · Compare return dates departing Jul 21, 2027Alaska AirlinesNonstopAxel-exclusive $175.00
Jul 21, 2027 – Jul 24, 2027 · 3 nights · Compare return dates departing Jul 21, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 21, 2027 – Jul 24, 2027 · 3 nights · Compare return dates departing Jul 21, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 21, 2027 – Jul 28, 2027 · 7 nights · Compare return dates departing Jul 21, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 21, 2027 – Jul 28, 2027 · 7 nights · Compare return dates departing Jul 21, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 22, 2027 · One way · Compare return dates departing Jul 22, 2027Frontier AirlinesNonstopAxel-exclusive $110.00
Jul 22, 2027 · One way · Compare return dates departing Jul 22, 2027Alaska AirlinesNonstopAxel-exclusive $175.00
Jul 22, 2027 – Jul 25, 2027 · 3 nights · Compare return dates departing Jul 22, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 22, 2027 – Jul 25, 2027 · 3 nights · Compare return dates departing Jul 22, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 22, 2027 – Jul 29, 2027 · 7 nights · Compare return dates departing Jul 22, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 22, 2027 – Jul 29, 2027 · 7 nights · Compare return dates departing Jul 22, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 23, 2027 · One way · Compare return dates departing Jul 23, 2027Frontier AirlinesNonstopAxel-exclusive $110.00
Jul 23, 2027 · One way · Compare return dates departing Jul 23, 2027Alaska AirlinesNonstopAxel-exclusive $175.00
Jul 23, 2027 – Jul 26, 2027 · 3 nights · Compare return dates departing Jul 23, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 23, 2027 – Jul 26, 2027 · 3 nights · Compare return dates departing Jul 23, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 23, 2027 – Jul 30, 2027 · 7 nights · Compare return dates departing Jul 23, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 23, 2027 – Jul 30, 2027 · 7 nights · Compare return dates departing Jul 23, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 24, 2027 · One way · Compare return dates departing Jul 24, 2027Frontier AirlinesNonstopAxel-exclusive $110.00
Jul 24, 2027 · One way · Compare return dates departing Jul 24, 2027Alaska AirlinesNonstopAxel-exclusive $175.00
Jul 24, 2027 – Jul 27, 2027 · 3 nights · Compare return dates departing Jul 24, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 24, 2027 – Jul 27, 2027 · 3 nights · Compare return dates departing Jul 24, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 24, 2027 – Jul 31, 2027 · 7 nights · Compare return dates departing Jul 24, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 24, 2027 – Jul 31, 2027 · 7 nights · Compare return dates departing Jul 24, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 25, 2027 · One way · Compare return dates departing Jul 25, 2027Frontier AirlinesNonstopAxel-exclusive $110.00
Jul 25, 2027 · One way · Compare return dates departing Jul 25, 2027Alaska AirlinesNonstopAxel-exclusive $175.00
Jul 25, 2027 – Jul 28, 2027 · 3 nights · Compare return dates departing Jul 25, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 25, 2027 – Jul 28, 2027 · 3 nights · Compare return dates departing Jul 25, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 25, 2027 – Aug 1, 2027 · 7 nights · Compare return dates departing Jul 25, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 25, 2027 – Aug 1, 2027 · 7 nights · Compare return dates departing Jul 25, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 26, 2027 · One way · Compare return dates departing Jul 26, 2027Frontier AirlinesNonstopAxel-exclusive $110.00
Jul 26, 2027 · One way · Compare return dates departing Jul 26, 2027Delta Air LinesNonstopAxel-exclusive $180.00
Jul 26, 2027 – Jul 29, 2027 · 3 nights · Compare return dates departing Jul 26, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 26, 2027 – Jul 29, 2027 · 3 nights · Compare return dates departing Jul 26, 2027Delta Air LinesNonstopAxel-exclusive $349.00
Jul 26, 2027 – Aug 2, 2027 · 7 nights · Compare return dates departing Jul 26, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 26, 2027 – Aug 2, 2027 · 7 nights · Compare return dates departing Jul 26, 2027Delta Air LinesNonstopAxel-exclusive $349.00
Jul 27, 2027 · One way · Compare return dates departing Jul 27, 2027Frontier AirlinesUp to 1 stop each wayAxel-exclusive $140.00
Jul 27, 2027 · One way · Compare return dates departing Jul 27, 2027Alaska AirlinesNonstopAxel-exclusive $175.00
Jul 27, 2027 – Jul 30, 2027 · 3 nights · Compare return dates departing Jul 27, 2027Frontier AirlinesUp to 1 stop each wayAxel-exclusive $245.00
Jul 27, 2027 – Jul 30, 2027 · 3 nights · Compare return dates departing Jul 27, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 27, 2027 – Aug 3, 2027 · 7 nights · Compare return dates departing Jul 27, 2027Frontier AirlinesUp to 1 stop each wayAxel-exclusive $245.00
Jul 27, 2027 – Aug 3, 2027 · 7 nights · Compare return dates departing Jul 27, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 28, 2027 · One way · Compare return dates departing Jul 28, 2027Frontier AirlinesNonstopAxel-exclusive $110.00
Jul 28, 2027 · One way · Compare return dates departing Jul 28, 2027Alaska AirlinesNonstopAxel-exclusive $175.00
Jul 28, 2027 – Jul 31, 2027 · 3 nights · Compare return dates departing Jul 28, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 28, 2027 – Jul 31, 2027 · 3 nights · Compare return dates departing Jul 28, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 28, 2027 – Aug 4, 2027 · 7 nights · Compare return dates departing Jul 28, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 28, 2027 – Aug 4, 2027 · 7 nights · Compare return dates departing Jul 28, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 29, 2027 · One way · Compare return dates departing Jul 29, 2027Frontier AirlinesNonstopAxel-exclusive $110.00
Jul 29, 2027 · One way · Compare return dates departing Jul 29, 2027Alaska AirlinesNonstopAxel-exclusive $175.00
Jul 29, 2027 – Aug 1, 2027 · 3 nights · Compare return dates departing Jul 29, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 29, 2027 – Aug 1, 2027 · 3 nights · Compare return dates departing Jul 29, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 29, 2027 – Aug 5, 2027 · 7 nights · Compare return dates departing Jul 29, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 29, 2027 – Aug 5, 2027 · 7 nights · Compare return dates departing Jul 29, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 30, 2027 · One way · Compare return dates departing Jul 30, 2027Frontier AirlinesNonstopAxel-exclusive $110.00
Jul 30, 2027 · One way · Compare return dates departing Jul 30, 2027Alaska AirlinesNonstopAxel-exclusive $175.00
Jul 30, 2027 – Aug 2, 2027 · 3 nights · Compare return dates departing Jul 30, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 30, 2027 – Aug 2, 2027 · 3 nights · Compare return dates departing Jul 30, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 30, 2027 – Aug 6, 2027 · 7 nights · Compare return dates departing Jul 30, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 30, 2027 – Aug 6, 2027 · 7 nights · Compare return dates departing Jul 30, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 31, 2027 · One way · Compare return dates departing Jul 31, 2027Frontier AirlinesNonstopAxel-exclusive $110.00
Jul 31, 2027 · One way · Compare return dates departing Jul 31, 2027Alaska AirlinesNonstopAxel-exclusive $175.00
Jul 31, 2027 – Aug 3, 2027 · 3 nights · Compare return dates departing Jul 31, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 31, 2027 – Aug 3, 2027 · 3 nights · Compare return dates departing Jul 31, 2027Alaska AirlinesNonstopAxel-exclusive $339.00
Jul 31, 2027 – Aug 7, 2027 · 7 nights · Compare return dates departing Jul 31, 2027Frontier AirlinesNonstopAxel-exclusive $215.00
Jul 31, 2027 – Aug 7, 2027 · 7 nights · Compare return dates departing Jul 31, 2027Alaska AirlinesNonstopAxel-exclusive $339.00

Route overview: Seattle to Ontario (ONT) flight deals

2027-07-01 · one way · Axel-exclusive $126.50

  • Frontier Airlines F92276: SEA 2027-07-01 10:50:00 → ONT 2027-07-01 13:38:00; nonstop; 168 minutes. Local airport times.

2027-07-01 · one way · Axel-exclusive $201.25

  • Alaska Airlines AS571: SEA 2027-07-01 12:20:00 → ONT 2027-07-01 15:03:00; nonstop; 163 minutes. Local airport times.

2027-07-01 → 2027-07-04 · Axel-exclusive $247.26

  • Frontier Airlines F92276: SEA 2027-07-01 10:50:00 → ONT 2027-07-01 13:38:00; nonstop; 168 minutes. Local airport times.
  • Frontier Airlines F92275: ONT 2027-07-04 06:00:00 → SEA 2027-07-04 09:03:00; nonstop; 183 minutes. Local airport times.

2027-07-01 → 2027-07-04 · Axel-exclusive $389.86

  • Alaska Airlines AS571: SEA 2027-07-01 12:20:00 → ONT 2027-07-01 15:03:00; nonstop; 163 minutes. Local airport times.
  • Alaska Airlines AS677: ONT 2027-07-04 11:57:00 → SEA 2027-07-04 14:49:00; nonstop; 172 minutes. Local airport times.

2027-07-03 → 2027-07-10 · Axel-exclusive $231.13

  • Frontier Airlines F92276: SEA 2027-07-03 10:18:00 → ONT 2027-07-03 13:06:00; nonstop; 168 minutes. Local airport times.
  • Frontier Airlines F92275: ONT 2027-07-10 06:00:00 → SEA 2027-07-10 09:03:00; nonstop; 183 minutes. Local airport times.

2027-07-03 → 2027-07-10 · Axel-exclusive $364.43

  • Alaska Airlines AS571: SEA 2027-07-03 12:20:00 → ONT 2027-07-03 15:03:00; nonstop; 163 minutes. Local airport times.
  • Alaska Airlines AS677: ONT 2027-07-10 11:57:00 → SEA 2027-07-10 14:49:00; nonstop; 172 minutes. Local airport times.

2027-07-06 → 2027-07-13 · Axel-exclusive $364.43

  • Alaska Airlines AS571: SEA 2027-07-06 13:33:00 → ONT 2027-07-06 16:05:00; nonstop; 152 minutes. Local airport times.
  • Alaska Airlines AS677: ONT 2027-07-13 11:57:00 → SEA 2027-07-13 14:49:00; nonstop; 172 minutes. Local airport times.

2027-07-06 → 2027-07-13 · Axel-exclusive $375.18

  • Delta Air Lines DL4070: SEA 2027-07-06 08:25:00 → ONT 2027-07-06 11:17:00; nonstop; 172 minutes. Local airport times.
  • Delta Air Lines DL4031: ONT 2027-07-13 17:55:00 → SEA 2027-07-13 21:00:00; nonstop; 185 minutes. Local airport times.

2027-07-09 → 2027-07-16 · Axel-exclusive $215.00

  • Frontier Airlines F92276: SEA 2027-07-09 10:18:00 → ONT 2027-07-09 13:06:00; nonstop; 168 minutes. Local airport times.
  • Frontier Airlines F92275: ONT 2027-07-16 06:00:00 → SEA 2027-07-16 09:03:00; nonstop; 183 minutes. Local airport times.

2027-07-09 → 2027-07-16 · Axel-exclusive $339.00

  • Alaska Airlines AS571: SEA 2027-07-09 12:20:00 → ONT 2027-07-09 15:03:00; nonstop; 163 minutes. Local airport times.
  • Alaska Airlines AS677: ONT 2027-07-16 11:57:00 → SEA 2027-07-16 14:49:00; nonstop; 172 minutes. Local airport times.

2027-07-12 → 2027-07-19 · Axel-exclusive $215.00

  • Frontier Airlines F92276: SEA 2027-07-12 10:18:00 → ONT 2027-07-12 13:06:00; nonstop; 168 minutes. Local airport times.
  • Frontier Airlines F92275: ONT 2027-07-19 06:00:00 → SEA 2027-07-19 09:03:00; nonstop; 183 minutes. Local airport times.

2027-07-12 → 2027-07-19 · Axel-exclusive $349.00

  • Delta Air Lines DL4031: SEA 2027-07-12 11:59:00 → ONT 2027-07-12 14:50:00; nonstop; 171 minutes. Local airport times.
  • Delta Air Lines DL4031: ONT 2027-07-19 17:38:00 → SEA 2027-07-19 20:43:00; nonstop; 185 minutes. Local airport times.

2027-07-16 → 2027-07-19 · Axel-exclusive $215.00

  • Frontier Airlines F92276: SEA 2027-07-16 10:18:00 → ONT 2027-07-16 13:06:00; nonstop; 168 minutes. Local airport times.
  • Frontier Airlines F92275: ONT 2027-07-19 06:00:00 → SEA 2027-07-19 09:03:00; nonstop; 183 minutes. Local airport times.

2027-07-16 → 2027-07-19 · Axel-exclusive $349.00

  • Delta Air Lines DL4031: SEA 2027-07-16 11:59:00 → ONT 2027-07-16 14:50:00; nonstop; 171 minutes. Local airport times.
  • Delta Air Lines DL4031: ONT 2027-07-19 17:38:00 → SEA 2027-07-19 20:43:00; nonstop; 185 minutes. Local airport times.

2027-07-19 → 2027-07-22 · Axel-exclusive $215.00

  • Frontier Airlines F92276: SEA 2027-07-19 10:18:00 → ONT 2027-07-19 13:06:00; nonstop; 168 minutes. Local airport times.
  • Frontier Airlines F92275: ONT 2027-07-22 06:00:00 → SEA 2027-07-22 09:03:00; nonstop; 183 minutes. Local airport times.

2027-07-19 → 2027-07-22 · Axel-exclusive $419.00

  • United Airlines UA2478 / UA552: SEA 2027-07-19 15:24:00 → ONT 2027-07-19 22:53:00; 1 stop(s) via SFO; 449 minutes. Local airport times.
    • UA2478: SEA 2027-07-19 15:24:00 → SFO 2027-07-19 17:45:00; layover at SFO: 225 minutes.
    • UA552: SFO 2027-07-19 21:30:00 → ONT 2027-07-19 22:53:00.
  • United Airlines UA2363 / UA2192: ONT 2027-07-22 06:00:00 → SEA 2027-07-22 12:18:00; 1 stop(s) via SFO; 378 minutes. Local airport times.
    • UA2363: ONT 2027-07-22 06:00:00 → SFO 2027-07-22 07:30:00; layover at SFO: 155 minutes.
    • UA2192: SFO 2027-07-22 10:05:00 → SEA 2027-07-22 12:18:00.

2027-07-22 → 2027-07-25 · Axel-exclusive $215.00

  • Frontier Airlines F92276: SEA 2027-07-22 10:50:00 → ONT 2027-07-22 13:38:00; nonstop; 168 minutes. Local airport times.
  • Frontier Airlines F92275: ONT 2027-07-25 06:00:00 → SEA 2027-07-25 09:03:00; nonstop; 183 minutes. Local airport times.

2027-07-22 → 2027-07-25 · Axel-exclusive $339.00

  • Alaska Airlines AS571: SEA 2027-07-22 12:20:00 → ONT 2027-07-22 15:03:00; nonstop; 163 minutes. Local airport times.
  • Alaska Airlines AS677: ONT 2027-07-25 11:57:00 → SEA 2027-07-25 14:49:00; nonstop; 172 minutes. Local airport times.

2027-07-25 → 2027-07-28 · Axel-exclusive $215.00

  • Frontier Airlines F92276: SEA 2027-07-25 10:50:00 → ONT 2027-07-25 13:38:00; nonstop; 168 minutes. Local airport times.
  • Frontier Airlines F92275: ONT 2027-07-28 06:00:00 → SEA 2027-07-28 09:03:00; nonstop; 183 minutes. Local airport times.

2027-07-25 → 2027-07-28 · Axel-exclusive $339.00

  • Alaska Airlines AS571: SEA 2027-07-25 12:20:00 → ONT 2027-07-25 15:03:00; nonstop; 163 minutes. Local airport times.
  • Alaska Airlines AS677: ONT 2027-07-28 11:57:00 → SEA 2027-07-28 14:49:00; nonstop; 172 minutes. Local airport times.

2027-07-28 → 2027-07-31 · Axel-exclusive $215.00

  • Frontier Airlines F92276: SEA 2027-07-28 10:18:00 → ONT 2027-07-28 13:06:00; nonstop; 168 minutes. Local airport times.
  • Frontier Airlines F92275: ONT 2027-07-31 06:00:00 → SEA 2027-07-31 09:03:00; nonstop; 183 minutes. Local airport times.

2027-07-28 → 2027-07-31 · Axel-exclusive $397.00

  • American Airlines AA2073 / AA1841: SEA 2027-07-28 15:00:00 → ONT 2027-07-28 21:52:00; 1 stop(s) via PHX; 412 minutes. Local airport times.
    • AA2073: SEA 2027-07-28 15:00:00 → PHX 2027-07-28 17:52:00; layover at PHX: 163 minutes.
    • AA1841: PHX 2027-07-28 20:35:00 → ONT 2027-07-28 21:52:00.
  • Southwest Airlines WN3313 / WN4608: ONT 2027-07-31 16:05:00 → SEA 2027-07-31 21:40:00; 1 stop(s) via OAK; 335 minutes. Local airport times.
    • WN3313: ONT 2027-07-31 16:05:00 → OAK 2027-07-31 17:30:00; layover at OAK: 110 minutes.
    • WN4608: OAK 2027-07-31 19:20:00 → SEA 2027-07-31 21:40:00.

2027-07-31 → 2027-08-07 · Axel-exclusive $215.00

  • Frontier Airlines F92276: SEA 2027-07-31 10:18:00 → ONT 2027-07-31 13:06:00; nonstop; 168 minutes. Local airport times.
  • Frontier Airlines F92275: ONT 2027-08-07 06:00:00 → SEA 2027-08-07 09:03:00; nonstop; 183 minutes. Local airport times.

2027-07-31 → 2027-08-07 · Axel-exclusive $339.00

  • Alaska Airlines AS571: SEA 2027-07-31 12:20:00 → ONT 2027-07-31 15:03:00; nonstop; 163 minutes. Local airport times.
  • Alaska Airlines AS677: ONT 2027-08-07 11:57:00 → SEA 2027-08-07 14:49:00; nonstop; 172 minutes. Local airport times.

More dates for this route

Seattle to Ontario nonstop flights, airlines and connections

Yes, Alaska, Delta and Frontier fly it nonstop. In the 53 departure dates we searched from Nov 8 to Jul 14, a nonstop from Seattle flew on 53: Saturdays 12 of 12, Fridays 11 of 11, Thursdays 8 of 8, Sundays 6 of 6, Wednesdays 6 of 6, Mondays 5 of 5 and Tuesdays 5 of 5. The nonstops were Alaska (AS489, AS571, AS575, AS594, AS677, AS1367, AS1465, AS378, AS1602, AS1482, AS1506), Delta (DL3987, DL4031, DL4070, DL3884, DL1539) and Frontier (F92276). These are the airlines seen in the saved flights.

  • Alaska: Nonstop to Ontario
  • Delta: Nonstop to Ontario
  • Frontier: Nonstop to Ontario
Departure dateItineraries searchedNonstopAirlines and flights
Sun Nov 855yesAlaska AS489, AS571, AS575, AS594; Delta DL3987, DL4031, DL4070; Frontier F92276
Mon Nov 966yesAlaska AS489, AS571, AS575, AS594; Delta DL3987, DL4031, DL4070; Frontier F92276
Wed Nov 11577yes, both waysAlaska AS571, AS575, AS594; Delta DL3987, DL4031, DL4070
Thu Nov 12874yes, both waysAlaska AS489, AS571, AS575, AS594; Delta DL3987, DL4031, DL4070; Frontier F92276
Fri Nov 13218yes, both waysAlaska AS489, AS571, AS575, AS594; Delta DL3987, DL4031, DL4070; Frontier F92276
Sat Nov 14272yes, both waysAlaska AS571, AS575, AS594; Delta DL3987, DL4031
Sun Nov 1580yesAlaska AS489, AS571, AS575, AS594; Delta DL3987, DL4031, DL4070; Frontier F92276
Mon Nov 1617yesAlaska AS489, AS571, AS575, AS594; Delta DL3987, DL4031, DL4070; Frontier F92276
Sat Nov 21178yes, both waysAlaska AS489, AS571, AS575; Delta DL3987, DL4031, DL4070; Frontier F92276
Tue Nov 24571yes, both waysAlaska AS489, AS571, AS575, AS594; Delta DL3987, DL4031, DL4070; Frontier F92276
Wed Nov 25667yes, both waysAlaska AS489, AS571, AS575, AS594; Delta DL3987, DL4031, DL4070; Frontier F92276
Thu Nov 26685yes, both waysAlaska AS571, AS575; Delta DL4031; Frontier F92276
Fri Nov 27322yes, both waysAlaska AS489, AS571, AS575, AS594; Delta DL4031; Frontier F92276
Sat Nov 2827yesAlaska AS489, AS571, AS575; Delta DL3987, DL4031, DL4070; Frontier F92276
Wed Dec 222yesAlaska AS571, AS677; Delta DL3987, DL4031, DL4070
Fri Dec 1134yes, both waysAlaska AS489, AS571, AS677; Delta DL3987, DL4031, DL4070
Mon Dec 14110yesAlaska AS489, AS571, AS677; Delta DL3987, DL4031, DL4070
Fri Dec 1899yesAlaska AS489, AS571, AS575, AS594; Delta DL3987, DL4031, DL4070
Sat Dec 19107yesAlaska AS489, AS571, AS575; Delta DL3987, DL4031, DL4070
Sun Dec 20274yesAlaska AS489, AS571, AS575, AS594; Delta DL3987, DL4031, DL4070
Mon Dec 2175yesAlaska AS489, AS571, AS575, AS594; Delta DL3987, DL4031, DL4070
Tue Dec 22156yesAlaska AS489, AS571, AS575, AS594; Delta DL3987, DL4031, DL4070
Wed Dec 2374yesAlaska AS489, AS571, AS575, AS594; Delta DL3987, DL4031, DL4070
Thu Dec 241151yes, both waysAlaska AS571, AS575, AS594; Delta DL4031, DL4070
Fri Dec 2548yesAlaska AS571, AS575, AS594; Delta DL4031, DL4070
Sat Dec 26694yes, both waysAlaska AS489, AS571, AS575; Delta DL3987, DL4031, DL4070
Sun Dec 2735yesAlaska AS489, AS571, AS575, AS594; Delta DL3987, DL4031, DL4070
Mon Dec 2829yesAlaska AS489, AS571, AS575, AS594; Delta DL3987, DL4031, DL4070
Tue Dec 2921yesAlaska AS489, AS571, AS575, AS594; Delta DL3987, DL4031, DL4070
Thu Dec 3181yesAlaska AS571, AS575, AS594; Delta DL4031, DL4070
Fri Jan 1141yesAlaska AS571, AS575, AS594; Delta DL4031, DL4070
Sat Jan 298yes, both waysAlaska AS489, AS571, AS575; Delta DL4031, DL4070
Fri Jan 8124yes, both waysAlaska AS489, AS571, AS677; Delta DL3884, DL4031
Tue Jan 1224yesAlaska AS489, AS571, AS677; Delta DL3884
Thu Jan 21723yes, both waysAlaska AS489, AS571, AS677; Delta DL3884, DL4031
Fri Jan 221223yes, both waysAlaska AS489, AS571, AS677; Delta DL3884, DL4031
Thu Feb 4122yes, both waysAlaska AS489, AS571, AS677; Delta DL3884, DL4031
Sun Feb 7159yesAlaska AS489, AS571, AS677; Delta DL3884, DL4031
Thu Feb 1173yesAlaska AS1367, AS1465, AS378; Delta DL3884, DL4031
Fri Feb 12567yesAlaska AS1367, AS1465, AS378; Delta DL3884, DL4031
Sat Feb 1378yesAlaska AS1367, AS1465, AS378; Delta DL3884, DL4031
Fri Mar 12159yesAlaska AS1367, AS1465, AS378; Delta DL3884, DL4031, DL4070
Tue Mar 16131yesAlaska AS1367, AS1465, AS378; Delta DL3884, DL4031, DL4070
Thu Mar 18157yes, both waysAlaska AS1367, AS1465, AS378; Delta DL3884, DL4031, DL4070
Fri Mar 19460yes, both waysAlaska AS1367, AS1465, AS378; Delta DL3884, DL4031, DL4070
Sat Mar 20109yes, both waysAlaska AS1367, AS1465, AS378; Delta DL3884, DL4031, DL4070
Sat Apr 376yes, both waysAlaska AS1367, AS1465, AS378; Delta DL3884, DL4031, DL4070
Sun Apr 4248yesAlaska AS1367, AS1465, AS378; Delta DL3884, DL4031, DL4070
Sat Jun 550yesAlaska AS1367, AS1465, AS1602, AS378; Delta DL1539, DL3884, DL4031
Wed Jun 985yesAlaska AS1367, AS1465, AS1602, AS378; Delta DL3884, DL4031, DL4070
Sat Jun 19189yes, both waysAlaska AS1465, AS1482, AS1506, AS1602, AS378; Delta DL3884, DL4031, DL4070
Sat Jul 10552yes, both waysAlaska AS1465, AS1482, AS1506, AS1602, AS378; Delta DL3884, DL4031, DL4070
Wed Jul 1488yesAlaska AS1465, AS1482, AS1506, AS1602, AS378; Delta DL3884, DL4031, DL4070

Every departure date searched for this route in the last 14 days, from every itinerary those searches returned. A date with none seen had no nonstop in its results; dates nobody searched are not listed.

Why book Seattle to Ontario flights with Axel

  • Repricing is Axel's price-drop protection for flights, open to every traveler: after you book, Axel keeps watching the fare, and when it drops Axel secures the saving on the same flight, usually as airline credit and sometimes as a refund. It is never guaranteed. Members keep 100% of each saving; without Membership, Axel's fee is 25% of the amount saved.
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How we checked Seattle to Ontario prices

Choose your dates to see flights and Axel-exclusive prices.

Airports covered: SEA → ONT. Each example names its actual airports. Departure month: 2027-07.

See flights for your dates and travelers

Seattle to Ontario flights for a family: prices for 2 adults and children

Saved fares Axel priced for parties with children, total for all travelers in USD, economy; the price opens that trip on Axel. Checked November 2, 2026 at 06:36 PM UTC

  • 2027-07-14 one way, 4 adults · 1 child: Axel-exclusive $1,035.35 · Southwest Airlines · 1 stop (SJC) · 4h 0m. Airline fare: $1,091. One-way prices for 4 adults · 1 child.
  • 2027-07-10 one way, 4 adults · 1 child: Axel-exclusive $1,035.35 · Southwest Airlines · 1 stop (SMF) · 4h 20m. Airline fare: $1,091. One-way prices for 4 adults · 1 child.

More Seattle to Ontario fares: other dates and travelers

Flights by travel date

SEA–ONT · 2027-07-14 · 4 adults · 1 child

One-way price · Economy · USD. One-way prices for 4 adults · 1 child.

  • Axel-exclusive $1,035.35 · Southwest Airlines 3141 / 3669 · 16:35–20:35 local · 1 stop (SJC) · 4h 0m. Carry-on bag: included with this Basic fare (airline fare details via Google Flights, November 2, 2026). Airline fare: $1,091. See flights for these dates

Checked November 2, 2026 at 06:36 PM UTC

SEA–ONT · 2027-07-10 · 4 adults · 1 child

One-way price · Economy · USD. One-way prices for 4 adults · 1 child.

  • Axel-exclusive $1,035.35 · Southwest Airlines 3599 / 3144 · 05:00–09:20 local · 1 stop (SMF) · 4h 20m. Carry-on bag: included with this Basic fare (airline fare details via Google Flights, November 2, 2026). Airline fare: $1,091. See flights for these dates

Checked November 2, 2026 at 06:29 PM UTC

SEA–ONT · 2027-07-10–2027-07-11 · 1 adult

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection.

  • Axel-exclusive $394.06 · Delta Air Lines 4031 · 14:35–17:17 local · Nonstop · 2h 42m. Airline fare: $417.

  • Axel-exclusive $394.06 · Alaska Airlines 1482 · 10:25–13:07 local · Nonstop · 2h 42m. Airline fare: $417.

  • Axel-exclusive $413.40 · Southwest Airlines 1183 / 2086 · 18:35–22:55 local · 1 stop (LAS) · 4h 20m. Airline fare: $437.

Checked November 2, 2026 at 05:06 PM UTC

Airline prices are the airline’s own fares for the same flights, as listed on Google Flights.

Airline ratings: Southwest Airlines 6.9/10 · Delta Air Lines 7.5/10 · Alaska Airlines 7.6/10. Every airline rated.

Planning: When to book Thanksgiving flights · Flying in December: prices, crowds and delays · How far in advance to book flights · The cheapest days of the week to fly and to book.

Source: https://helloaxel.com/en/flights/from-seattle-sea-to-ontario-ont-in-july-2027

Hotels near ONT

Welcome Inn (Colton) · Best Western Plus Ontario Airport & Convention Center (Ontario) · Travelodge by Wyndham Fairplex Pomona (Pomona) · Best Western San Dimas Hotel & Suites (San Dimas) · Simply Home Inn & Suites (Riverside)

For AI assistants

  • This page: Seattle to Ontario (ONT): July 2027 flight deals. Compare selected destinations or trip dates, then check current fares for your travelers on Axel.
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