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San Francisco → Ontario

Dec 18, 2026 · return Dec 19, 2026

SFO → ONT1 adulteconomyRound trip

5 flight options · 3 airlines

Nonstop flights

Fri, Dec 18 – Sat, Dec 19

Frontier Airlines
9:56 pmSFO
1h 27m
Nonstop
11:23 pmONT
Frontier Airlines
12:01 pmONT
1h 35m
Nonstop
1:36 pmSFO

Round-trip total · 1 adult · Taxes included

Fri, Dec 18 – Sat, Dec 19

United Airlines
9:30 pmSFO
1h 23m
Nonstop
10:53 pmONT
United Airlines
11:20 amONT
1h 30m
Nonstop
12:50 pmSFO

Round-trip total · 1 adult · Taxes included

Fri, Dec 18 – Sat, Dec 19

United Airlines
4:35 pmSFO
1h 26m
Nonstop
6:01 pmONT
United Airlines
11:20 amONT
1h 30m
Nonstop
12:50 pmSFO

Round-trip total · 1 adult · Taxes included

One-stop flights

Fri, Dec 18 – Sat, Dec 19

Southwest Airlines
5:10 amSFO
5h 30m
LAS · 2h 50m
10:40 amONT
Southwest Airlines
5:45 amONT
3h 55m
LAS · 1h 5m
9:40 amSFO

Round-trip total · 1 adult · Taxes included

Fri, Dec 18 – Sat, Dec 19

Frontier Airlines
2:22 pmSFO
4h 9m
LAS · 1h 15m
6:31 pmONT
Frontier Airlines
12:01 pmONT
1h 35m
Nonstop
1:36 pmSFO

Round-trip total · 1 adult · Taxes included

Make this trip yours

SFO ⇄ ONT

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
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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)
2026-12-18 → 2026-12-19Frontier AirlinesF91160 / F91159$143.752026-10-29T01:18:59Z
2026-12-18 → 2026-12-19United AirlinesUA552 / UA1375$270.252026-10-29T01:18:59Z
2026-12-18 → 2026-12-19Southwest AirlinesWN4361 + WN2401 / WN2184 + WN496$322.002026-10-29T01:18:59Z
2026-12-18 → 2026-12-19United AirlinesUA436 / UA1375$270.252026-10-29T01:18:59Z
2026-12-18 → 2026-12-19Frontier AirlinesF92486 + F91923 / F91159$176.252026-10-29T01:18:59Z

2026-12-18 → 2026-12-19 · $143.75

  • Frontier Airlines F91160: SFO 2026-12-18 21:56:00 → ONT 2026-12-18 23:23:00; nonstop; 87 minutes. Local airport times.
  • Frontier Airlines F91159: ONT 2026-12-19 12:01:00 → SFO 2026-12-19 13:36:00; nonstop; 95 minutes. Local airport times.

2026-12-18 → 2026-12-19 · $270.25

  • United Airlines UA552: SFO 2026-12-18 21:30:00 → ONT 2026-12-18 22:53:00; nonstop; 83 minutes. Local airport times.
  • United Airlines UA1375: ONT 2026-12-19 11:20:00 → SFO 2026-12-19 12:50:00; nonstop; 90 minutes. Local airport times.

2026-12-18 → 2026-12-19 · $322.00

  • Southwest Airlines WN4361 / WN2401: SFO 2026-12-18 05:10:00 → ONT 2026-12-18 10:40:00; 1 stop(s) via LAS; 330 minutes. Local airport times.
    • WN4361: SFO 2026-12-18 05:10:00 → LAS 2026-12-18 06:45:00; layover at LAS: 170 minutes.
    • WN2401: LAS 2026-12-18 09:35:00 → ONT 2026-12-18 10:40:00.
  • Southwest Airlines WN2184 / WN496: ONT 2026-12-19 05:45:00 → SFO 2026-12-19 09:40:00; 1 stop(s) via LAS; 235 minutes. Local airport times.
    • WN2184: ONT 2026-12-19 05:45:00 → LAS 2026-12-19 06:55:00; layover at LAS: 65 minutes.
    • WN496: LAS 2026-12-19 08:00:00 → SFO 2026-12-19 09:40:00.

2026-12-18 → 2026-12-19 · $270.25

  • United Airlines UA436: SFO 2026-12-18 16:35:00 → ONT 2026-12-18 18:01:00; nonstop; 86 minutes. Local airport times.
  • United Airlines UA1375: ONT 2026-12-19 11:20:00 → SFO 2026-12-19 12:50:00; nonstop; 90 minutes. Local airport times.

2026-12-18 → 2026-12-19 · $176.25

  • Frontier Airlines F92486 / F91923: SFO 2026-12-18 14:22:00 → ONT 2026-12-18 18:31:00; 1 stop(s) via LAS; 249 minutes. Local airport times.
    • F92486: SFO 2026-12-18 14:22:00 → LAS 2026-12-18 16:10:00; layover at LAS: 75 minutes.
    • F91923: LAS 2026-12-18 17:25:00 → ONT 2026-12-18 18:31:00.
  • Frontier Airlines F91159: ONT 2026-12-19 12:01:00 → SFO 2026-12-19 13:36:00; nonstop; 95 minutes. Local airport times.

More dates for this route