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San Francisco → Ontario

Dec 28, 2026 · return Jan 2, 2027

SFO → ONT1 adulteconomyRound trip

5 flight options · 3 airlines

Nonstop flights

Mon, Dec 28 – Sat, Jan 2

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

Mon, Dec 28 – Sat, Jan 2

United Airlines
11:00 amSFO
1h 29m
Nonstop
12:29 pmONT
United Airlines
11:20 amONT
1h 30m
Nonstop
12:50 pmSFO

Round-trip total · 1 adult · Taxes included

Mon, Dec 28 – Sat, Jan 2

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

One-stop flights

Mon, Dec 28 – Sat, Jan 2

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

Mon, Dec 28 – Sat, Jan 2

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 5, 2026 → Nov 8, 2026Nov 14, 2026 → Nov 21, 2026Nov 24, 2026 → Nov 29, 2026Dec 5, 2026 → Dec 12, 2026Dec 17, 2026 → Dec 20, 2026Dec 26, 2026 → Jan 2, 2027Jan 5, 2027 · One wayJan 16, 2027 → Jan 23, 2027Feb 5, 2027 → Feb 8, 2027Apr 3, 2027 → Apr 10, 2027Jun 26, 2027 → Jul 3, 2027Sep 17, 2027 → Sep 20, 2027
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)
2026-12-28 → 2027-01-02Frontier AirlinesF91160 / F91159$156.262026-10-29T01:18:59Z
2026-12-28 → 2027-01-02United AirlinesUA1482 / UA1375$293.762026-10-29T01:18:59Z
2026-12-28 → 2027-01-02Southwest AirlinesWN4361 + WN2401 / WN2184 + WN496$350.002026-10-29T01:18:59Z
2026-12-28 → 2027-01-02United AirlinesUA552 / UA1375$293.762026-10-29T01:18:59Z
2026-12-28 → 2027-01-02Frontier AirlinesF92486 + F91923 / F91159$196.882026-10-29T01:18:59Z

2026-12-28 → 2027-01-02 · $156.26

  • Frontier Airlines F91160: SFO 2026-12-28 21:56:00 → ONT 2026-12-28 23:23:00; nonstop; 87 minutes. Local airport times.
  • Frontier Airlines F91159: ONT 2027-01-02 12:01:00 → SFO 2027-01-02 13:36:00; nonstop; 95 minutes. Local airport times.

2026-12-28 → 2027-01-02 · $293.76

  • United Airlines UA1482: SFO 2026-12-28 11:00:00 → ONT 2026-12-28 12:29:00; nonstop; 89 minutes. Local airport times.
  • United Airlines UA1375: ONT 2027-01-02 11:20:00 → SFO 2027-01-02 12:50:00; nonstop; 90 minutes. Local airport times.

2026-12-28 → 2027-01-02 · $350.00

  • Southwest Airlines WN4361 / WN2401: SFO 2026-12-28 05:10:00 → ONT 2026-12-28 10:40:00; 1 stop(s) via LAS; 330 minutes. Local airport times.
    • WN4361: SFO 2026-12-28 05:10:00 → LAS 2026-12-28 06:45:00; layover at LAS: 170 minutes.
    • WN2401: LAS 2026-12-28 09:35:00 → ONT 2026-12-28 10:40:00.
  • Southwest Airlines WN2184 / WN496: ONT 2027-01-02 05:45:00 → SFO 2027-01-02 09:40:00; 1 stop(s) via LAS; 235 minutes. Local airport times.
    • WN2184: ONT 2027-01-02 05:45:00 → LAS 2027-01-02 06:55:00; layover at LAS: 65 minutes.
    • WN496: LAS 2027-01-02 08:00:00 → SFO 2027-01-02 09:40:00.

2026-12-28 → 2027-01-02 · $293.76

  • United Airlines UA552: SFO 2026-12-28 21:30:00 → ONT 2026-12-28 22:53:00; nonstop; 83 minutes. Local airport times.
  • United Airlines UA1375: ONT 2027-01-02 11:20:00 → SFO 2027-01-02 12:50:00; nonstop; 90 minutes. Local airport times.

2026-12-28 → 2027-01-02 · $196.88

  • Frontier Airlines F92486 / F91923: SFO 2026-12-28 14:22:00 → ONT 2026-12-28 18:31:00; 1 stop(s) via LAS; 249 minutes. Local airport times.
    • F92486: SFO 2026-12-28 14:22:00 → LAS 2026-12-28 16:10:00; layover at LAS: 75 minutes.
    • F91923: LAS 2026-12-28 17:25:00 → ONT 2026-12-28 18:31:00.
  • Frontier Airlines F91159: ONT 2027-01-02 12:01:00 → SFO 2027-01-02 13:36:00; nonstop; 95 minutes. Local airport times.

More dates for this route