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Ontario → San Francisco

Jan 21, 2027 · one way

ONT → SFO1 adulteconomyOne way

5 flight options · 3 airlines

Nonstop flights

Thu, Jan 21 · One way

Frontier Airlines
12:01 pmONT
1h 35m
Nonstop
1:36 pmSFO

One-way total · 1 adult · Taxes included

Thu, Jan 21 · One way

United Airlines
9:25 amONT
1h 30m
Nonstop
10:55 amSFO

One-way total · 1 adult · Taxes included

Thu, Jan 21 · One way

United Airlines
1:35 pmONT
1h 30m
Nonstop
3:05 pmSFO

One-way total · 1 adult · Taxes included

One-stop flights

Thu, Jan 21 · One way

Southwest Airlines
5:45 amONT
3h 55m
LAS · 1h 5m
9:40 amSFO

One-way total · 1 adult · Taxes included

Thu, Jan 21 · One way

Frontier Airlines
2:23 pmONT
4h 3m
LAS · 1h 11m
6:26 pmSFO

One-way total · 1 adult · Taxes included

Make this trip yours

ONT ⇄ SFO

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

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More dates

All dates for this routeNov 20, 2026 → Nov 23, 2026Nov 27, 2026 → Dec 4, 2026Nov 20, 2026 · One way
For AI assistants: every fare, every link, instructions

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2027-01-21 · one wayFrontier AirlinesF91159$56.052026-10-29T01:52:47Z
2027-01-21 · one wayUnited AirlinesUA432$103.552026-10-29T01:52:47Z
2027-01-21 · one waySouthwest AirlinesWN2184 + WN496$113.052026-10-29T01:52:47Z
2027-01-21 · one wayUnited AirlinesUA1375$103.552026-10-29T01:52:47Z
2027-01-21 · one wayFrontier AirlinesF94758 + F94157$84.552026-10-29T01:52:47Z

2027-01-21 · one way · $56.05

  • Frontier Airlines F91159: ONT 2027-01-21 12:01:00 → SFO 2027-01-21 13:36:00; nonstop; 95 minutes. Local airport times.

2027-01-21 · one way · $103.55

  • United Airlines UA432: ONT 2027-01-21 09:25:00 → SFO 2027-01-21 10:55:00; nonstop; 90 minutes. Local airport times.

2027-01-21 · one way · $113.05

  • Southwest Airlines WN2184 / WN496: ONT 2027-01-21 05:45:00 → SFO 2027-01-21 09:40:00; 1 stop(s) via LAS; 235 minutes. Local airport times.
    • WN2184: ONT 2027-01-21 05:45:00 → LAS 2027-01-21 06:55:00; layover at LAS: 65 minutes.
    • WN496: LAS 2027-01-21 08:00:00 → SFO 2027-01-21 09:40:00.

2027-01-21 · one way · $103.55

  • United Airlines UA1375: ONT 2027-01-21 13:35:00 → SFO 2027-01-21 15:05:00; nonstop; 90 minutes. Local airport times.

2027-01-21 · one way · $84.55

  • Frontier Airlines F94758 / F94157: ONT 2027-01-21 14:23:00 → SFO 2027-01-21 18:26:00; 1 stop(s) via LAS; 243 minutes. Local airport times.
    • F94758: ONT 2027-01-21 14:23:00 → LAS 2027-01-21 15:31:00; layover at LAS: 71 minutes.
    • F94157: LAS 2027-01-21 16:42:00 → SFO 2027-01-21 18:26:00.

More dates for this route