Seattle (SEA) to Dulles (IAD), July 2027: flights from $265 one way

Lowest published fares in July 2027: $525 round trip, Axel-exclusive, Delta Air Lines, 1 stop, Jul 7–14, 2027; $265 one way, Axel-exclusive, United Airlines, 1 stop, Jul 7, 2027; 188 priced flights on 94 exact dates, 1 adult, economy, checked Oct 29, 2026.

Compare flight prices from Seattle to Dulles for your dates.

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Flights in July 2027

Lowest published fares in July 2027: $525 round trip, Axel-exclusive, Delta Air Lines, 1 stop, Jul 7–14, 2027; $265 one way, Axel-exclusive, United Airlines, 1 stop, 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 Dulles (IAD): July 2027

Travel datesAirlineStopsTotal price
Jul 1, 2027 · One way · Compare return dates departing Jul 1, 2027Alaska AirlinesNonstopAxel-exclusive $322.00
Jul 1, 2027 · One way · Compare return dates departing Jul 1, 2027United AirlinesNonstopAxel-exclusive $327.75
Jul 1, 2027 – Jul 4, 2027 · 3 nights · Compare return dates departing Jul 1, 2027Alaska AirlinesNonstopAxel-exclusive $621.00
Jul 1, 2027 – Jul 4, 2027 · 3 nights · Compare return dates departing Jul 1, 2027Delta Air LinesUp to 1 stop each wayAxel-exclusive $623.88
Jul 1, 2027 – Jul 8, 2027 · 7 nights · Compare return dates departing Jul 1, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $573.75
Jul 1, 2027 – Jul 8, 2027 · 7 nights · Compare return dates departing Jul 1, 2027Alaska AirlinesNonstopAxel-exclusive $580.50
Jul 2, 2027 · One way · Compare return dates departing Jul 2, 2027Alaska AirlinesNonstopAxel-exclusive $322.00
Jul 2, 2027 · One way · Compare return dates departing Jul 2, 2027United AirlinesNonstopAxel-exclusive $327.75
Jul 2, 2027 – Jul 5, 2027 · 3 nights · Compare return dates departing Jul 2, 2027Alaska AirlinesNonstopAxel-exclusive $621.00
Jul 2, 2027 – Jul 5, 2027 · 3 nights · Compare return dates departing Jul 2, 2027United AirlinesNonstopAxel-exclusive $632.50
Jul 2, 2027 – Jul 6, 2027 · 4 nights · Compare return dates departing Jul 2, 2027Alaska AirlinesNonstopAxel-exclusive $621.00
Jul 2, 2027 – Jul 6, 2027 · 4 nights · Compare return dates departing Jul 2, 2027United AirlinesNonstopAxel-exclusive $632.50
Jul 2, 2027 – Jul 9, 2027 · 7 nights · Compare return dates departing Jul 2, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $573.75
Jul 2, 2027 – Jul 9, 2027 · 7 nights · Compare return dates departing Jul 2, 2027Alaska AirlinesNonstopAxel-exclusive $580.50
Jul 3, 2027 · One way · Compare return dates departing Jul 3, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $304.75
Jul 3, 2027 · One way · Compare return dates departing Jul 3, 2027Alaska AirlinesNonstopAxel-exclusive $322.00
Jul 3, 2027 – Jul 6, 2027 · 3 nights · Compare return dates departing Jul 3, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $612.38
Jul 3, 2027 – Jul 6, 2027 · 3 nights · Compare return dates departing Jul 3, 2027Alaska AirlinesNonstopAxel-exclusive $621.00
Jul 3, 2027 – Jul 10, 2027 · 7 nights · Compare return dates departing Jul 3, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $571.13
Jul 3, 2027 – Jul 10, 2027 · 7 nights · Compare return dates departing Jul 3, 2027Alaska AirlinesNonstopAxel-exclusive $580.50
Jul 4, 2027 · One way · Compare return dates departing Jul 4, 2027Alaska AirlinesNonstopAxel-exclusive $322.00
Jul 4, 2027 · One way · Compare return dates departing Jul 4, 2027United AirlinesNonstopAxel-exclusive $327.75
Jul 4, 2027 – Jul 7, 2027 · 3 nights · Compare return dates departing Jul 4, 2027Alaska AirlinesNonstopAxel-exclusive $580.50
Jul 4, 2027 – Jul 7, 2027 · 3 nights · Compare return dates departing Jul 4, 2027Delta Air LinesUp to 1 stop each wayAxel-exclusive $584.50
Jul 4, 2027 – Jul 11, 2027 · 7 nights · Compare return dates departing Jul 4, 2027Alaska AirlinesNonstopAxel-exclusive $580.50
Jul 4, 2027 – Jul 11, 2027 · 7 nights · Compare return dates departing Jul 4, 2027Delta Air LinesUp to 1 stop each wayAxel-exclusive $584.50
Jul 5, 2027 · One way · Compare return dates departing Jul 5, 2027Alaska AirlinesNonstopAxel-exclusive $322.00
Jul 5, 2027 · One way · Compare return dates departing Jul 5, 2027United AirlinesNonstopAxel-exclusive $327.75
Jul 5, 2027 – Jul 8, 2027 · 3 nights · Compare return dates departing Jul 5, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $573.75
Jul 5, 2027 – Jul 8, 2027 · 3 nights · Compare return dates departing Jul 5, 2027Alaska AirlinesNonstopAxel-exclusive $580.50
Jul 5, 2027 – Jul 12, 2027 · 7 nights · Compare return dates departing Jul 5, 2027Alaska AirlinesNonstopAxel-exclusive $580.50
Jul 5, 2027 – Jul 12, 2027 · 7 nights · Compare return dates departing Jul 5, 2027United AirlinesNonstopAxel-exclusive $591.25
Jul 6, 2027 · One way · Compare return dates departing Jul 6, 2027Alaska AirlinesNonstopAxel-exclusive $322.00
Jul 6, 2027 · One way · Compare return dates departing Jul 6, 2027United AirlinesNonstopAxel-exclusive $327.75
Jul 6, 2027 – Jul 9, 2027 · 3 nights · Compare return dates departing Jul 6, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $573.75
Jul 6, 2027 – Jul 9, 2027 · 3 nights · Compare return dates departing Jul 6, 2027Alaska AirlinesNonstopAxel-exclusive $580.50
Jul 6, 2027 – Jul 13, 2027 · 7 nights · Compare return dates departing Jul 6, 2027Alaska AirlinesNonstopAxel-exclusive $580.50
Jul 6, 2027 – Jul 13, 2027 · 7 nights · Compare return dates departing Jul 6, 2027United AirlinesNonstopAxel-exclusive $591.25
Jul 7, 2027 · One way · Compare return dates departing Jul 7, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $265.00
Jul 7, 2027 · One way · Compare return dates departing Jul 7, 2027Alaska AirlinesNonstopAxel-exclusive $280.00
Jul 7, 2027 – Jul 10, 2027 · 3 nights · Compare return dates departing Jul 7, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $532.50
Jul 7, 2027 – Jul 10, 2027 · 3 nights · Compare return dates departing Jul 7, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 7, 2027 – Jul 14, 2027 · 7 nights · Compare return dates departing Jul 7, 2027Delta Air LinesUp to 1 stop each wayAxel-exclusive $525.00
Jul 7, 2027 – Jul 14, 2027 · 7 nights · Compare return dates departing Jul 7, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 8, 2027 · One way · Compare return dates departing Jul 8, 2027Alaska AirlinesNonstopAxel-exclusive $280.00
Jul 8, 2027 · One way · Compare return dates departing Jul 8, 2027United AirlinesNonstopAxel-exclusive $285.00
Jul 8, 2027 – Jul 11, 2027 · 3 nights · Compare return dates departing Jul 8, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 8, 2027 – Jul 11, 2027 · 3 nights · Compare return dates departing Jul 8, 2027Delta Air LinesUp to 1 stop each wayAxel-exclusive $542.50
Jul 8, 2027 – Jul 15, 2027 · 7 nights · Compare return dates departing Jul 8, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $532.50
Jul 8, 2027 – Jul 15, 2027 · 7 nights · Compare return dates departing Jul 8, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 9, 2027 · One way · Compare return dates departing Jul 9, 2027Alaska AirlinesNonstopAxel-exclusive $280.00
Jul 9, 2027 · One way · Compare return dates departing Jul 9, 2027United AirlinesNonstopAxel-exclusive $285.00
Jul 9, 2027 – Jul 12, 2027 · 3 nights · Compare return dates departing Jul 9, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 9, 2027 – Jul 12, 2027 · 3 nights · Compare return dates departing Jul 9, 2027United AirlinesNonstopAxel-exclusive $550.00
Jul 9, 2027 – Jul 16, 2027 · 7 nights · Compare return dates departing Jul 9, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $532.50
Jul 9, 2027 – Jul 16, 2027 · 7 nights · Compare return dates departing Jul 9, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 10, 2027 · One way · Compare return dates departing Jul 10, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $265.00
Jul 10, 2027 · One way · Compare return dates departing Jul 10, 2027Alaska AirlinesNonstopAxel-exclusive $280.00
Jul 10, 2027 – Jul 13, 2027 · 3 nights · Compare return dates departing Jul 10, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $532.50
Jul 10, 2027 – Jul 13, 2027 · 3 nights · Compare return dates departing Jul 10, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 10, 2027 – Jul 17, 2027 · 7 nights · Compare return dates departing Jul 10, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $532.50
Jul 10, 2027 – Jul 17, 2027 · 7 nights · Compare return dates departing Jul 10, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 11, 2027 · One way · Compare return dates departing Jul 11, 2027Alaska AirlinesNonstopAxel-exclusive $280.00
Jul 11, 2027 · One way · Compare return dates departing Jul 11, 2027United AirlinesNonstopAxel-exclusive $285.00
Jul 11, 2027 – Jul 14, 2027 · 3 nights · Compare return dates departing Jul 11, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 11, 2027 – Jul 14, 2027 · 3 nights · Compare return dates departing Jul 11, 2027Delta Air LinesUp to 1 stop each wayAxel-exclusive $542.50
Jul 11, 2027 – Jul 18, 2027 · 7 nights · Compare return dates departing Jul 11, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 11, 2027 – Jul 18, 2027 · 7 nights · Compare return dates departing Jul 11, 2027Delta Air LinesUp to 1 stop each wayAxel-exclusive $542.50
Jul 12, 2027 · One way · Compare return dates departing Jul 12, 2027Alaska AirlinesNonstopAxel-exclusive $280.00
Jul 12, 2027 · One way · Compare return dates departing Jul 12, 2027United AirlinesNonstopAxel-exclusive $285.00
Jul 12, 2027 – Jul 15, 2027 · 3 nights · Compare return dates departing Jul 12, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $532.50
Jul 12, 2027 – Jul 15, 2027 · 3 nights · Compare return dates departing Jul 12, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 12, 2027 – Jul 19, 2027 · 7 nights · Compare return dates departing Jul 12, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 12, 2027 – Jul 19, 2027 · 7 nights · Compare return dates departing Jul 12, 2027United AirlinesNonstopAxel-exclusive $550.00
Jul 13, 2027 · One way · Compare return dates departing Jul 13, 2027Alaska AirlinesNonstopAxel-exclusive $280.00
Jul 13, 2027 · One way · Compare return dates departing Jul 13, 2027United AirlinesNonstopAxel-exclusive $285.00
Jul 13, 2027 – Jul 16, 2027 · 3 nights · Compare return dates departing Jul 13, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $532.50
Jul 13, 2027 – Jul 16, 2027 · 3 nights · Compare return dates departing Jul 13, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 13, 2027 – Jul 20, 2027 · 7 nights · Compare return dates departing Jul 13, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 13, 2027 – Jul 20, 2027 · 7 nights · Compare return dates departing Jul 13, 2027United AirlinesNonstopAxel-exclusive $550.00
Jul 14, 2027 · One way · Compare return dates departing Jul 14, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $265.00
Jul 14, 2027 · One way · Compare return dates departing Jul 14, 2027Alaska AirlinesNonstopAxel-exclusive $280.00
Jul 14, 2027 – Jul 17, 2027 · 3 nights · Compare return dates departing Jul 14, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $532.50
Jul 14, 2027 – Jul 17, 2027 · 3 nights · Compare return dates departing Jul 14, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 14, 2027 – Jul 21, 2027 · 7 nights · Compare return dates departing Jul 14, 2027Delta Air LinesUp to 1 stop each wayAxel-exclusive $525.00
Jul 14, 2027 – Jul 21, 2027 · 7 nights · Compare return dates departing Jul 14, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 15, 2027 · One way · Compare return dates departing Jul 15, 2027Alaska AirlinesNonstopAxel-exclusive $280.00
Jul 15, 2027 · One way · Compare return dates departing Jul 15, 2027United AirlinesNonstopAxel-exclusive $285.00
Jul 15, 2027 – Jul 18, 2027 · 3 nights · Compare return dates departing Jul 15, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 15, 2027 – Jul 18, 2027 · 3 nights · Compare return dates departing Jul 15, 2027Delta Air LinesUp to 1 stop each wayAxel-exclusive $542.50
Jul 15, 2027 – Jul 22, 2027 · 7 nights · Compare return dates departing Jul 15, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $532.50
Jul 15, 2027 – Jul 22, 2027 · 7 nights · Compare return dates departing Jul 15, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 16, 2027 · One way · Compare return dates departing Jul 16, 2027Alaska AirlinesNonstopAxel-exclusive $280.00
Jul 16, 2027 · One way · Compare return dates departing Jul 16, 2027United AirlinesNonstopAxel-exclusive $285.00
Jul 16, 2027 – Jul 19, 2027 · 3 nights · Compare return dates departing Jul 16, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 16, 2027 – Jul 19, 2027 · 3 nights · Compare return dates departing Jul 16, 2027United AirlinesNonstopAxel-exclusive $550.00
Jul 16, 2027 – Jul 23, 2027 · 7 nights · Compare return dates departing Jul 16, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $532.50
Jul 16, 2027 – Jul 23, 2027 · 7 nights · Compare return dates departing Jul 16, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 17, 2027 · One way · Compare return dates departing Jul 17, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $265.00
Jul 17, 2027 · One way · Compare return dates departing Jul 17, 2027Alaska AirlinesNonstopAxel-exclusive $280.00
Jul 17, 2027 – Jul 20, 2027 · 3 nights · Compare return dates departing Jul 17, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $532.50
Jul 17, 2027 – Jul 20, 2027 · 3 nights · Compare return dates departing Jul 17, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 17, 2027 – Jul 24, 2027 · 7 nights · Compare return dates departing Jul 17, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $532.50
Jul 17, 2027 – Jul 24, 2027 · 7 nights · Compare return dates departing Jul 17, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 18, 2027 · One way · Compare return dates departing Jul 18, 2027Alaska AirlinesNonstopAxel-exclusive $280.00
Jul 18, 2027 · One way · Compare return dates departing Jul 18, 2027United AirlinesNonstopAxel-exclusive $285.00
Jul 18, 2027 – Jul 21, 2027 · 3 nights · Compare return dates departing Jul 18, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 18, 2027 – Jul 21, 2027 · 3 nights · Compare return dates departing Jul 18, 2027Delta Air LinesUp to 1 stop each wayAxel-exclusive $542.50
Jul 18, 2027 – Jul 25, 2027 · 7 nights · Compare return dates departing Jul 18, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 18, 2027 – Jul 25, 2027 · 7 nights · Compare return dates departing Jul 18, 2027Delta Air LinesUp to 1 stop each wayAxel-exclusive $542.50
Jul 19, 2027 · One way · Compare return dates departing Jul 19, 2027Alaska AirlinesNonstopAxel-exclusive $280.00
Jul 19, 2027 · One way · Compare return dates departing Jul 19, 2027United AirlinesNonstopAxel-exclusive $285.00
Jul 19, 2027 – Jul 22, 2027 · 3 nights · Compare return dates departing Jul 19, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $532.50
Jul 19, 2027 – Jul 22, 2027 · 3 nights · Compare return dates departing Jul 19, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 19, 2027 – Jul 26, 2027 · 7 nights · Compare return dates departing Jul 19, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 19, 2027 – Jul 26, 2027 · 7 nights · Compare return dates departing Jul 19, 2027United AirlinesNonstopAxel-exclusive $550.00
Jul 20, 2027 · One way · Compare return dates departing Jul 20, 2027Alaska AirlinesNonstopAxel-exclusive $280.00
Jul 20, 2027 · One way · Compare return dates departing Jul 20, 2027United AirlinesNonstopAxel-exclusive $285.00
Jul 20, 2027 – Jul 23, 2027 · 3 nights · Compare return dates departing Jul 20, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $532.50
Jul 20, 2027 – Jul 23, 2027 · 3 nights · Compare return dates departing Jul 20, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 20, 2027 – Jul 27, 2027 · 7 nights · Compare return dates departing Jul 20, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 20, 2027 – Jul 27, 2027 · 7 nights · Compare return dates departing Jul 20, 2027United AirlinesNonstopAxel-exclusive $550.00
Jul 21, 2027 · One way · Compare return dates departing Jul 21, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $265.00
Jul 21, 2027 · One way · Compare return dates departing Jul 21, 2027Alaska AirlinesNonstopAxel-exclusive $280.00
Jul 21, 2027 – Jul 24, 2027 · 3 nights · Compare return dates departing Jul 21, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $532.50
Jul 21, 2027 – Jul 24, 2027 · 3 nights · Compare return dates departing Jul 21, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 21, 2027 – Jul 28, 2027 · 7 nights · Compare return dates departing Jul 21, 2027Delta Air LinesUp to 1 stop each wayAxel-exclusive $525.00
Jul 21, 2027 – Jul 28, 2027 · 7 nights · Compare return dates departing Jul 21, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 22, 2027 · One way · Compare return dates departing Jul 22, 2027Alaska AirlinesNonstopAxel-exclusive $280.00
Jul 22, 2027 · One way · Compare return dates departing Jul 22, 2027United AirlinesNonstopAxel-exclusive $285.00
Jul 22, 2027 – Jul 25, 2027 · 3 nights · Compare return dates departing Jul 22, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 22, 2027 – Jul 25, 2027 · 3 nights · Compare return dates departing Jul 22, 2027Delta Air LinesUp to 1 stop each wayAxel-exclusive $542.50
Jul 22, 2027 – Jul 29, 2027 · 7 nights · Compare return dates departing Jul 22, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $532.50
Jul 22, 2027 – Jul 29, 2027 · 7 nights · Compare return dates departing Jul 22, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 23, 2027 · One way · Compare return dates departing Jul 23, 2027Alaska AirlinesNonstopAxel-exclusive $280.00
Jul 23, 2027 · One way · Compare return dates departing Jul 23, 2027United AirlinesNonstopAxel-exclusive $285.00
Jul 23, 2027 – Jul 26, 2027 · 3 nights · Compare return dates departing Jul 23, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 23, 2027 – Jul 26, 2027 · 3 nights · Compare return dates departing Jul 23, 2027United AirlinesNonstopAxel-exclusive $550.00
Jul 23, 2027 – Jul 30, 2027 · 7 nights · Compare return dates departing Jul 23, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $532.50
Jul 23, 2027 – Jul 30, 2027 · 7 nights · Compare return dates departing Jul 23, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 24, 2027 · One way · Compare return dates departing Jul 24, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $265.00
Jul 24, 2027 · One way · Compare return dates departing Jul 24, 2027Alaska AirlinesNonstopAxel-exclusive $280.00
Jul 24, 2027 – Jul 27, 2027 · 3 nights · Compare return dates departing Jul 24, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $532.50
Jul 24, 2027 – Jul 27, 2027 · 3 nights · Compare return dates departing Jul 24, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 24, 2027 – Jul 31, 2027 · 7 nights · Compare return dates departing Jul 24, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $532.50
Jul 24, 2027 – Jul 31, 2027 · 7 nights · Compare return dates departing Jul 24, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 25, 2027 · One way · Compare return dates departing Jul 25, 2027Alaska AirlinesNonstopAxel-exclusive $280.00
Jul 25, 2027 · One way · Compare return dates departing Jul 25, 2027United AirlinesNonstopAxel-exclusive $285.00
Jul 25, 2027 – Jul 28, 2027 · 3 nights · Compare return dates departing Jul 25, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 25, 2027 – Jul 28, 2027 · 3 nights · Compare return dates departing Jul 25, 2027Delta Air LinesUp to 1 stop each wayAxel-exclusive $542.50
Jul 25, 2027 – Aug 1, 2027 · 7 nights · Compare return dates departing Jul 25, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 25, 2027 – Aug 1, 2027 · 7 nights · Compare return dates departing Jul 25, 2027Delta Air LinesUp to 1 stop each wayAxel-exclusive $542.50
Jul 26, 2027 · One way · Compare return dates departing Jul 26, 2027Alaska AirlinesNonstopAxel-exclusive $280.00
Jul 26, 2027 · One way · Compare return dates departing Jul 26, 2027United AirlinesNonstopAxel-exclusive $285.00
Jul 26, 2027 – Jul 29, 2027 · 3 nights · Compare return dates departing Jul 26, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $532.50
Jul 26, 2027 – Jul 29, 2027 · 3 nights · Compare return dates departing Jul 26, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 26, 2027 – Aug 2, 2027 · 7 nights · Compare return dates departing Jul 26, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 26, 2027 – Aug 2, 2027 · 7 nights · Compare return dates departing Jul 26, 2027United AirlinesNonstopAxel-exclusive $550.00
Jul 27, 2027 · One way · Compare return dates departing Jul 27, 2027Alaska AirlinesNonstopAxel-exclusive $280.00
Jul 27, 2027 · One way · Compare return dates departing Jul 27, 2027United AirlinesNonstopAxel-exclusive $285.00
Jul 27, 2027 – Jul 30, 2027 · 3 nights · Compare return dates departing Jul 27, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $532.50
Jul 27, 2027 – Jul 30, 2027 · 3 nights · Compare return dates departing Jul 27, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 27, 2027 – Aug 3, 2027 · 7 nights · Compare return dates departing Jul 27, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 27, 2027 – Aug 3, 2027 · 7 nights · Compare return dates departing Jul 27, 2027United AirlinesNonstopAxel-exclusive $550.00
Jul 28, 2027 · One way · Compare return dates departing Jul 28, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $265.00
Jul 28, 2027 · One way · Compare return dates departing Jul 28, 2027Alaska AirlinesNonstopAxel-exclusive $280.00
Jul 28, 2027 – Jul 31, 2027 · 3 nights · Compare return dates departing Jul 28, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $532.50
Jul 28, 2027 – Jul 31, 2027 · 3 nights · Compare return dates departing Jul 28, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 28, 2027 – Aug 4, 2027 · 7 nights · Compare return dates departing Jul 28, 2027Delta Air LinesUp to 1 stop each wayAxel-exclusive $525.00
Jul 28, 2027 – Aug 4, 2027 · 7 nights · Compare return dates departing Jul 28, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 29, 2027 · One way · Compare return dates departing Jul 29, 2027Alaska AirlinesNonstopAxel-exclusive $280.00
Jul 29, 2027 · One way · Compare return dates departing Jul 29, 2027United AirlinesNonstopAxel-exclusive $285.00
Jul 29, 2027 – Aug 1, 2027 · 3 nights · Compare return dates departing Jul 29, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 29, 2027 – Aug 1, 2027 · 3 nights · Compare return dates departing Jul 29, 2027Delta Air LinesUp to 1 stop each wayAxel-exclusive $542.50
Jul 29, 2027 – Aug 5, 2027 · 7 nights · Compare return dates departing Jul 29, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $532.50
Jul 29, 2027 – Aug 5, 2027 · 7 nights · Compare return dates departing Jul 29, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 30, 2027 · One way · Compare return dates departing Jul 30, 2027Alaska AirlinesNonstopAxel-exclusive $280.00
Jul 30, 2027 · One way · Compare return dates departing Jul 30, 2027United AirlinesNonstopAxel-exclusive $285.00
Jul 30, 2027 – Aug 2, 2027 · 3 nights · Compare return dates departing Jul 30, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 30, 2027 – Aug 2, 2027 · 3 nights · Compare return dates departing Jul 30, 2027United AirlinesNonstopAxel-exclusive $550.00
Jul 30, 2027 – Aug 6, 2027 · 7 nights · Compare return dates departing Jul 30, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $532.50
Jul 30, 2027 – Aug 6, 2027 · 7 nights · Compare return dates departing Jul 30, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 31, 2027 · One way · Compare return dates departing Jul 31, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $265.00
Jul 31, 2027 · One way · Compare return dates departing Jul 31, 2027Alaska AirlinesNonstopAxel-exclusive $280.00
Jul 31, 2027 – Aug 3, 2027 · 3 nights · Compare return dates departing Jul 31, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $532.50
Jul 31, 2027 – Aug 3, 2027 · 3 nights · Compare return dates departing Jul 31, 2027Alaska AirlinesNonstopAxel-exclusive $540.00
Jul 31, 2027 – Aug 7, 2027 · 7 nights · Compare return dates departing Jul 31, 2027United AirlinesUp to 1 stop each wayAxel-exclusive $532.50
Jul 31, 2027 – Aug 7, 2027 · 7 nights · Compare return dates departing Jul 31, 2027Alaska AirlinesNonstopAxel-exclusive $540.00

Hotels in Washington, DC for these trips

Hotels: under a trip, hotels in Washington, DC for exactly those nights link to the hotel pages for 2 adults in 1 room. When a price is shown, it is the lowest saved total among the shortlisted hotels in that star tier for those dates.

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Route overview: Seattle to Dulles (IAD) flight deals

2027-07-01 · one way · Axel-exclusive $322.00

  • Alaska Airlines AS737: SEA 2027-07-01 08:30:00 → IAD 2027-07-01 16:28:00; nonstop; 298 minutes. Local airport times.

2027-07-01 · one way · Axel-exclusive $327.75

  • United Airlines UA1348: SEA 2027-07-01 08:09:00 → IAD 2027-07-01 16:08:00; nonstop; 299 minutes. Local airport times.

2027-07-01 → 2027-07-04 · Axel-exclusive $621.00

  • Alaska Airlines AS737: SEA 2027-07-01 08:30:00 → IAD 2027-07-01 16:28:00; nonstop; 298 minutes. Local airport times.
  • Alaska Airlines AS737: IAD 2027-07-04 17:31:00 → SEA 2027-07-04 20:32:00; nonstop; 361 minutes. Local airport times.

2027-07-01 → 2027-07-04 · Axel-exclusive $632.50

  • United Airlines UA1348: SEA 2027-07-01 08:09:00 → IAD 2027-07-01 16:08:00; nonstop; 299 minutes. Local airport times.
  • United Airlines UA1128: IAD 2027-07-04 17:55:00 → SEA 2027-07-04 21:02:00; nonstop; 367 minutes. Local airport times.

2027-07-03 → 2027-07-10 · Axel-exclusive $571.13

  • United Airlines UA2601 / UA2087: SEA 2027-07-03 05:00:00 → IAD 2027-07-03 15:44:00; 1 stop(s) via DEN; 464 minutes. Local airport times.
    • UA2601: SEA 2027-07-03 05:00:00 → DEN 2027-07-03 08:41:00; layover at DEN: 99 minutes.
    • UA2087: DEN 2027-07-03 10:20:00 → IAD 2027-07-03 15:44:00.
  • United Airlines UA2731: IAD 2027-07-10 08:50:00 → SEA 2027-07-10 11:57:00; nonstop; 367 minutes. Local airport times.

2027-07-03 → 2027-07-10 · Axel-exclusive $580.50

  • Alaska Airlines AS737: SEA 2027-07-03 08:30:00 → IAD 2027-07-03 16:28:00; nonstop; 298 minutes. Local airport times.
  • Alaska Airlines AS737: IAD 2027-07-10 17:31:00 → SEA 2027-07-10 20:32:00; nonstop; 361 minutes. Local airport times.

2027-07-06 → 2027-07-13 · Axel-exclusive $580.50

  • Alaska Airlines AS737: SEA 2027-07-06 08:30:00 → IAD 2027-07-06 16:28:00; nonstop; 298 minutes. Local airport times.
  • Alaska Airlines AS737: IAD 2027-07-13 17:31:00 → SEA 2027-07-13 20:32:00; nonstop; 361 minutes. Local airport times.

2027-07-06 → 2027-07-13 · Axel-exclusive $591.25

  • United Airlines UA2645: SEA 2027-07-06 22:50:00 → IAD 2027-07-07 06:51:00; nonstop; 301 minutes. Local airport times.
  • United Airlines UA1128: IAD 2027-07-13 17:55:00 → SEA 2027-07-13 21:02:00; nonstop; 367 minutes. Local airport times.

2027-07-09 → 2027-07-16 · Axel-exclusive $532.50

  • United Airlines UA2645: SEA 2027-07-09 22:50:00 → IAD 2027-07-10 06:51:00; nonstop; 301 minutes. Local airport times.
  • United Airlines UA565 / UA2099: IAD 2027-07-16 06:10:00 → SEA 2027-07-16 12:19:00; 1 stop(s) via ORD; 549 minutes. Local airport times.
    • UA565: IAD 2027-07-16 06:10:00 → ORD 2027-07-16 07:32:00; layover at ORD: 113 minutes.
    • UA2099: ORD 2027-07-16 09:25:00 → SEA 2027-07-16 12:19:00.

2027-07-09 → 2027-07-16 · Axel-exclusive $540.00

  • Alaska Airlines AS737: SEA 2027-07-09 08:30:00 → IAD 2027-07-09 16:28:00; nonstop; 298 minutes. Local airport times.
  • Alaska Airlines AS737: IAD 2027-07-16 17:31:00 → SEA 2027-07-16 20:32:00; nonstop; 361 minutes. Local airport times.

2027-07-12 → 2027-07-19 · Axel-exclusive $540.00

  • Alaska Airlines AS367: SEA 2027-07-12 21:45:00 → IAD 2027-07-13 05:45:00; nonstop; 300 minutes. Local airport times.
  • Alaska Airlines AS737: IAD 2027-07-19 17:31:00 → SEA 2027-07-19 20:32:00; nonstop; 361 minutes. Local airport times.

2027-07-12 → 2027-07-19 · Axel-exclusive $550.00

  • United Airlines UA2645: SEA 2027-07-12 22:50:00 → IAD 2027-07-13 06:51:00; nonstop; 301 minutes. Local airport times.
  • United Airlines UA2731: IAD 2027-07-19 08:50:00 → SEA 2027-07-19 11:57:00; nonstop; 367 minutes. Local airport times.

2027-07-16 → 2027-07-19 · Axel-exclusive $540.00

  • Alaska Airlines AS737: SEA 2027-07-16 08:30:00 → IAD 2027-07-16 16:28:00; nonstop; 298 minutes. Local airport times.
  • Alaska Airlines AS737: IAD 2027-07-19 17:31:00 → SEA 2027-07-19 20:32:00; nonstop; 361 minutes. Local airport times.

2027-07-16 → 2027-07-19 · Axel-exclusive $550.00

  • United Airlines UA2645: SEA 2027-07-16 22:50:00 → IAD 2027-07-17 06:51:00; nonstop; 301 minutes. Local airport times.
  • United Airlines UA2731: IAD 2027-07-19 08:50:00 → SEA 2027-07-19 11:57:00; nonstop; 367 minutes. Local airport times.

2027-07-19 → 2027-07-22 · Axel-exclusive $540.00

  • Alaska Airlines AS367: SEA 2027-07-19 21:45:00 → IAD 2027-07-20 05:45:00; nonstop; 300 minutes. Local airport times.
  • Alaska Airlines AS409: IAD 2027-07-22 07:05:00 → SEA 2027-07-22 10:00:00; nonstop; 355 minutes. Local airport times.

2027-07-19 → 2027-07-22 · Axel-exclusive $560.00

  • Delta Air Lines DL541: SEA 2027-07-19 16:30:00 → IAD 2027-07-20 00:31:00; nonstop; 301 minutes. Local airport times.
  • Delta Air Lines DL1015: IAD 2027-07-22 07:00:00 → SEA 2027-07-22 10:10:00; nonstop; 370 minutes. Local airport times.

2027-07-22 → 2027-07-25 · Axel-exclusive $540.00

  • Alaska Airlines AS737: SEA 2027-07-22 08:30:00 → IAD 2027-07-22 16:28:00; nonstop; 298 minutes. Local airport times.
  • Alaska Airlines AS737: IAD 2027-07-25 17:31:00 → SEA 2027-07-25 20:32:00; nonstop; 361 minutes. Local airport times.

2027-07-22 → 2027-07-25 · Axel-exclusive $550.00

  • United Airlines UA1348: SEA 2027-07-22 08:09:00 → IAD 2027-07-22 16:08:00; nonstop; 299 minutes. Local airport times.
  • United Airlines UA1128: IAD 2027-07-25 17:55:00 → SEA 2027-07-25 21:02:00; nonstop; 367 minutes. Local airport times.

2027-07-25 → 2027-07-28 · Axel-exclusive $540.00

  • Alaska Airlines AS737: SEA 2027-07-25 08:30:00 → IAD 2027-07-25 16:28:00; nonstop; 298 minutes. Local airport times.
  • Alaska Airlines AS737: IAD 2027-07-28 17:31:00 → SEA 2027-07-28 20:32:00; nonstop; 361 minutes. Local airport times.

2027-07-25 → 2027-07-28 · Axel-exclusive $550.00

  • United Airlines UA672: SEA 2027-07-25 08:09:00 → IAD 2027-07-25 16:08:00; nonstop; 299 minutes. Local airport times.
  • United Airlines UA1128: IAD 2027-07-28 17:55:00 → SEA 2027-07-28 21:02:00; nonstop; 367 minutes. Local airport times.

2027-07-28 → 2027-07-31 · Axel-exclusive $532.50

  • United Airlines UA747 / UA2202: SEA 2027-07-28 10:50:00 → IAD 2027-07-28 21:13:00; 1 stop(s) via ORD; 443 minutes. Local airport times.
    • UA747: SEA 2027-07-28 10:50:00 → ORD 2027-07-28 17:00:00; layover at ORD: 70 minutes.
    • UA2202: ORD 2027-07-28 18:10:00 → IAD 2027-07-28 21:13:00.
  • United Airlines UA2731: IAD 2027-07-31 08:50:00 → SEA 2027-07-31 11:57:00; nonstop; 367 minutes. Local airport times.

2027-07-28 → 2027-07-31 · Axel-exclusive $540.00

  • Alaska Airlines AS737: SEA 2027-07-28 08:15:00 → IAD 2027-07-28 16:15:00; nonstop; 300 minutes. Local airport times.
  • Alaska Airlines AS737: IAD 2027-07-31 17:31:00 → SEA 2027-07-31 20:32:00; nonstop; 361 minutes. Local airport times.

2027-07-31 → 2027-08-07 · Axel-exclusive $532.50

  • United Airlines UA2601 / UA2087: SEA 2027-07-31 05:00:00 → IAD 2027-07-31 15:44:00; 1 stop(s) via DEN; 464 minutes. Local airport times.
    • UA2601: SEA 2027-07-31 05:00:00 → DEN 2027-07-31 08:41:00; layover at DEN: 99 minutes.
    • UA2087: DEN 2027-07-31 10:20:00 → IAD 2027-07-31 15:44:00.
  • United Airlines UA2731: IAD 2027-08-07 08:50:00 → SEA 2027-08-07 11:57:00; nonstop; 367 minutes. Local airport times.

2027-07-31 → 2027-08-07 · Axel-exclusive $540.00

  • Alaska Airlines AS737: SEA 2027-07-31 08:30:00 → IAD 2027-07-31 16:28:00; nonstop; 298 minutes. Local airport times.
  • Alaska Airlines AS737: IAD 2027-08-07 17:31:00 → SEA 2027-08-07 20:32:00; nonstop; 361 minutes. Local airport times.

More dates for this route

Why book Seattle to Dulles flights with Axel

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How we checked Seattle to Dulles prices

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

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

See flights for your dates and travelers

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

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-dulles-iad-in-july-2027

Hotels in Washington, DC with Axel

Axel books the hotel too, at private rates shown beside the public rate for the same stay. Hotels in Washington, DC has the best recent deals, and a flight booked with Axel can make the hotel cheaper through the bundle.

Where to stay: Where to stay in Washington, DC: the 12 best neighborhoods, ranked · Washington, DC hotels where a family of four can share one room

Hotel details in Washington, DC: Conrad Washington, DC 5★ from $252 a night in the next 30 days · Hilton Arlington · Residence Inn Arlington Ballston · All 191 hotels in Washington, DC

Near IAD: Fairfax Marriott at Fair Oaks (Fairfax) · Candlewood Suites Washington-Fairfax by IHG (Fairfax)

For AI assistants

  • This page: Seattle to Dulles (IAD): July 2027 flight deals. Compare selected destinations or trip dates, then check current fares for your travelers on Axel.
  • Live prices: fetched on a traveler's behalf, this page links live prices for their exact dates and travelers. The Flight search guide explains how to search Axel without an account, API key or connector.