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Route overview: San Francisco Bay Area to Ontario (ONT) flight deals

San Francisco → Ontario

Dec 27, 2026 · choose your return date

SFO → ONT1 adulteconomyOne way and round trips

30 flight options · 2 airlines

Choose your return date

One-way flights and round trips by duration. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

December 2026

Dec 27, 2026 · One wayFrontier AirlinesNonstop$84.50 Dec 27, 2026 · One wayUnited AirlinesNonstop$162.50 Dec 27, 2026 – Dec 28, 2026 · 1 nightFrontier AirlinesNonstop$159.38 Dec 27, 2026 – Dec 28, 2026 · 1 nightUnited AirlinesNonstop$299.63 Dec 27, 2026 – Dec 29, 2026 · 2 nightsFrontier AirlinesNonstop$159.38 Dec 27, 2026 – Dec 29, 2026 · 2 nightsUnited AirlinesNonstop$299.63 Dec 27, 2026 – Dec 30, 2026 · 3 nightsFrontier AirlinesNonstop$159.38 Dec 27, 2026 – Dec 30, 2026 · 3 nightsUnited AirlinesNonstop$299.63 Dec 27, 2026 – Dec 31, 2026 · 4 nightsFrontier AirlinesUp to 1 stop each way$200.00 Dec 27, 2026 – Dec 31, 2026 · 4 nightsUnited AirlinesNonstop$299.63 Dec 27, 2026 – Jan 1, 2027 · 5 nightsFrontier AirlinesUp to 1 stop each way$200.00 Dec 27, 2026 – Jan 1, 2027 · 5 nightsUnited AirlinesNonstop$299.63 Dec 27, 2026 – Jan 2, 2027 · 6 nightsFrontier AirlinesNonstop$159.38 Dec 27, 2026 – Jan 2, 2027 · 6 nightsUnited AirlinesNonstop$299.63 Dec 27, 2026 – Jan 3, 2027 · 7 nightsFrontier AirlinesNonstop$159.38 Dec 27, 2026 – Jan 3, 2027 · 7 nightsUnited AirlinesNonstop$299.63 Dec 27, 2026 – Jan 4, 2027 · 8 nightsFrontier AirlinesNonstop$143.75 Dec 27, 2026 – Jan 4, 2027 · 8 nightsUnited AirlinesNonstop$270.25 Dec 27, 2026 – Jan 5, 2027 · 9 nightsFrontier AirlinesNonstop$143.75 Dec 27, 2026 – Jan 5, 2027 · 9 nightsUnited AirlinesNonstop$270.25 Dec 27, 2026 – Jan 6, 2027 · 10 nightsFrontier AirlinesNonstop$143.75 Dec 27, 2026 – Jan 6, 2027 · 10 nightsUnited AirlinesNonstop$270.25 Dec 27, 2026 – Jan 7, 2027 · 11 nightsFrontier AirlinesUp to 1 stop each way$176.25 Dec 27, 2026 – Jan 7, 2027 · 11 nightsUnited AirlinesNonstop$270.25 Dec 27, 2026 – Jan 8, 2027 · 12 nightsFrontier AirlinesUp to 1 stop each way$176.25 Dec 27, 2026 – Jan 8, 2027 · 12 nightsUnited AirlinesNonstop$270.25 Dec 27, 2026 – Jan 9, 2027 · 13 nightsFrontier AirlinesNonstop$143.75 Dec 27, 2026 – Jan 9, 2027 · 13 nightsUnited AirlinesNonstop$270.25 Dec 27, 2026 – Jan 10, 2027 · 14 nightsFrontier AirlinesNonstop$143.75 Dec 27, 2026 – Jan 10, 2027 · 14 nightsUnited AirlinesNonstop$270.25

Flights for your trip

  1. Sun, Dec 27 · One way

    Frontier Airlines
    9:56 pmSFO
    1h 27m
    Nonstop
    11:23 pmONT

    One-way total · 1 adult · Taxes included

  2. Sun, Dec 27 · One way

    United Airlines
    9:30 pmSFO
    1h 23m
    Nonstop
    10:53 pmONT

    One-way total · 1 adult · Taxes included

  3. Sun, Dec 27 – Mon, Dec 28

    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

  4. Sun, Dec 27 – Mon, Dec 28

    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

  5. Sun, Dec 27 – Tue, Dec 29

    Frontier Airlines
    9:56 pmSFO
    1h 27m
    Nonstop
    11:23 pmONT
    Frontier Airlines
    7:26 pmONT
    1h 35m
    Nonstop
    9:01 pmSFO

    Round-trip total · 1 adult · Taxes included

  6. Sun, Dec 27 – Tue, Dec 29

    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

  7. Sun, Dec 27 – Wed, Dec 30

    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

  8. Sun, Dec 27 – Wed, Dec 30

    United Airlines
    9:30 pmSFO
    1h 23m
    Nonstop
    10:53 pmONT
    United Airlines
    6:00 amONT
    1h 30m
    Nonstop
    7:30 amSFO

    Round-trip total · 1 adult · Taxes included

  9. Sun, Dec 27 – Thu, Dec 31

    Frontier Airlines
    9:56 pmSFO
    1h 27m
    Nonstop
    11:23 pmONT
    Frontier Airlines
    2:23 pmONT
    4h 3m
    LAS · 1h 11m
    6:26 pmSFO

    Round-trip total · 1 adult · Taxes included

  10. Sun, Dec 27 – Thu, Dec 31

    United Airlines
    9:30 pmSFO
    1h 23m
    Nonstop
    10:53 pmONT
    United Airlines
    9:25 amONT
    1h 30m
    Nonstop
    10:55 amSFO

    Round-trip total · 1 adult · Taxes included

  11. Sun, Dec 27 – 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

  12. Sun, Dec 27 – 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

  13. Sun, Dec 27 – Sun, Jan 3

    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

  14. Sun, Dec 27 – Sun, Jan 3

    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

  15. Sun, Dec 27 – Mon, Jan 4

    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

  16. Sun, Dec 27 – Mon, Jan 4

    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

  17. Sun, Dec 27 – Wed, Jan 6

    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

  18. Sun, Dec 27 – Wed, Jan 6

    United Airlines
    9:30 pmSFO
    1h 23m
    Nonstop
    10:53 pmONT
    United Airlines
    6:00 amONT
    1h 30m
    Nonstop
    7:30 amSFO

    Round-trip total · 1 adult · Taxes included

  19. Sun, Dec 27 – Thu, Jan 7

    Frontier Airlines
    9:56 pmSFO
    1h 27m
    Nonstop
    11:23 pmONT
    Frontier Airlines
    2:23 pmONT
    4h 3m
    LAS · 1h 11m
    6:26 pmSFO

    Round-trip total · 1 adult · Taxes included

  20. Sun, Dec 27 – Thu, Jan 7

    United Airlines
    9:30 pmSFO
    1h 23m
    Nonstop
    10:53 pmONT
    United Airlines
    9:25 amONT
    1h 30m
    Nonstop
    10:55 amSFO

    Round-trip total · 1 adult · Taxes included

  21. Sun, Dec 27 – Fri, Jan 8

    Frontier Airlines
    9:56 pmSFO
    1h 27m
    Nonstop
    11:23 pmONT
    Frontier Airlines
    2:23 pmONT
    4h 3m
    LAS · 1h 11m
    6:26 pmSFO

    Round-trip total · 1 adult · Taxes included

  22. Sun, Dec 27 – Fri, Jan 8

    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

  23. Sun, Dec 27 – Sun, Jan 10

    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

  24. Sun, Dec 27 – Sun, Jan 10

    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

Swipe to see 23 more recent deals.

1 of 24

Make this trip yours

SFO ⇄ ONT

Economy

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Explore this route

All dates for this routeDec 26, 2026 · Return optionsDec 28, 2026 · Return options
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.

Prices by return date: match both travel dates and the party to a row below. Each total is for that exact trip, issued at the time shown. To book or select flights, follow that row's price link; it keeps the exact dates and travelers.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-27 · one wayFrontier AirlinesF91160Axel-exclusive $84.502026-10-29T01:18:59Z
2026-12-27 · one wayUnited AirlinesUA552Axel-exclusive $162.502026-10-29T01:18:59Z
2026-12-27 → 2026-12-28Frontier AirlinesF91160 / F91159Axel-exclusive $159.382026-10-29T01:18:59Z
2026-12-27 → 2026-12-28United AirlinesUA552 / UA1375Axel-exclusive $299.632026-10-29T01:18:59Z
2026-12-27 → 2026-12-29Frontier AirlinesF91160 / F91159Axel-exclusive $159.382026-10-29T01:18:59Z
2026-12-27 → 2026-12-29United AirlinesUA552 / UA1375Axel-exclusive $299.632026-10-29T01:18:59Z
2026-12-27 → 2026-12-30Frontier AirlinesF91160 / F91159Axel-exclusive $159.382026-10-29T01:18:59Z
2026-12-27 → 2026-12-30United AirlinesUA552 / UA2363Axel-exclusive $299.632026-10-29T01:18:59Z
2026-12-27 → 2026-12-31United AirlinesUA552 / UA432Axel-exclusive $299.632026-10-29T01:18:59Z
2026-12-27 → 2026-12-31Frontier AirlinesF91160 / F94758 + F94157Axel-exclusive $200.002026-10-29T01:18:59Z
2026-12-27 → 2027-01-01United AirlinesUA552 / UA1375Axel-exclusive $299.632026-10-29T01:18:59Z
2026-12-27 → 2027-01-01Frontier AirlinesF91160 / F94758 + F94157Axel-exclusive $200.002026-10-29T01:18:59Z
2026-12-27 → 2027-01-02Frontier AirlinesF91160 / F91159Axel-exclusive $159.382026-10-29T01:18:59Z
2026-12-27 → 2027-01-02United AirlinesUA552 / UA1375Axel-exclusive $299.632026-10-29T01:18:59Z
2026-12-27 → 2027-01-03Frontier AirlinesF91160 / F91159Axel-exclusive $159.382026-10-29T01:18:59Z
2026-12-27 → 2027-01-03United AirlinesUA552 / UA1375Axel-exclusive $299.632026-10-29T01:18:59Z
2026-12-27 → 2027-01-04Frontier AirlinesF91160 / F91159Axel-exclusive $143.752026-10-29T01:18:59Z
2026-12-27 → 2027-01-04United AirlinesUA552 / UA1375Axel-exclusive $270.252026-10-29T01:18:59Z
2026-12-27 → 2027-01-05Frontier AirlinesF91160 / F91159Axel-exclusive $143.752026-10-29T01:18:59Z
2026-12-27 → 2027-01-05United AirlinesUA552 / UA1375Axel-exclusive $270.252026-10-29T01:18:59Z
2026-12-27 → 2027-01-06Frontier AirlinesF91160 / F91159Axel-exclusive $143.752026-10-29T01:18:59Z
2026-12-27 → 2027-01-06United AirlinesUA552 / UA2363Axel-exclusive $270.252026-10-29T01:18:59Z
2026-12-27 → 2027-01-07United AirlinesUA552 / UA432Axel-exclusive $270.252026-10-29T01:18:59Z
2026-12-27 → 2027-01-07Frontier AirlinesF91160 / F94758 + F94157Axel-exclusive $176.252026-10-29T01:18:59Z
2026-12-27 → 2027-01-08United AirlinesUA552 / UA1375Axel-exclusive $270.252026-10-29T01:18:59Z
2026-12-27 → 2027-01-08Frontier AirlinesF91160 / F94758 + F94157Axel-exclusive $176.252026-10-29T01:18:59Z
2026-12-27 → 2027-01-09Frontier AirlinesF91160 / F91159Axel-exclusive $143.752026-10-29T01:18:59Z
2026-12-27 → 2027-01-09United AirlinesUA552 / UA1375Axel-exclusive $270.252026-10-29T01:18:59Z
2026-12-27 → 2027-01-10Frontier AirlinesF91160 / F91159Axel-exclusive $143.752026-10-29T01:18:59Z
2026-12-27 → 2027-01-10United AirlinesUA552 / UA1375Axel-exclusive $270.252026-10-29T01:18:59Z

Route overview: San Francisco Bay Area to Ontario (ONT) flight deals

2026-12-27 · one way · Axel-exclusive $84.50

  • Frontier Airlines F91160: SFO 2026-12-27 21:56:00 → ONT 2026-12-27 23:23:00; nonstop; 87 minutes. Local airport times.

2026-12-27 · one way · Axel-exclusive $162.50

  • United Airlines UA552: SFO 2026-12-27 21:30:00 → ONT 2026-12-27 22:53:00; nonstop; 83 minutes. Local airport times.

2026-12-27 → 2026-12-28 · Axel-exclusive $159.38

  • Frontier Airlines F91160: SFO 2026-12-27 21:56:00 → ONT 2026-12-27 23:23:00; nonstop; 87 minutes. Local airport times.
  • Frontier Airlines F91159: ONT 2026-12-28 12:01:00 → SFO 2026-12-28 13:36:00; nonstop; 95 minutes. Local airport times.

2026-12-27 → 2026-12-28 · Axel-exclusive $299.63

  • United Airlines UA552: SFO 2026-12-27 21:30:00 → ONT 2026-12-27 22:53:00; nonstop; 83 minutes. Local airport times.
  • United Airlines UA1375: ONT 2026-12-28 11:20:00 → SFO 2026-12-28 12:50:00; nonstop; 90 minutes. Local airport times.

2026-12-27 → 2026-12-29 · Axel-exclusive $159.38

  • Frontier Airlines F91160: SFO 2026-12-27 21:56:00 → ONT 2026-12-27 23:23:00; nonstop; 87 minutes. Local airport times.
  • Frontier Airlines F91159: ONT 2026-12-29 19:26:00 → SFO 2026-12-29 21:01:00; nonstop; 95 minutes. Local airport times.

2026-12-27 → 2026-12-29 · Axel-exclusive $299.63

  • United Airlines UA552: SFO 2026-12-27 21:30:00 → ONT 2026-12-27 22:53:00; nonstop; 83 minutes. Local airport times.
  • United Airlines UA1375: ONT 2026-12-29 11:20:00 → SFO 2026-12-29 12:50:00; nonstop; 90 minutes. Local airport times.

2026-12-27 → 2026-12-30 · Axel-exclusive $159.38

  • Frontier Airlines F91160: SFO 2026-12-27 21:56:00 → ONT 2026-12-27 23:23:00; nonstop; 87 minutes. Local airport times.
  • Frontier Airlines F91159: ONT 2026-12-30 12:01:00 → SFO 2026-12-30 13:36:00; nonstop; 95 minutes. Local airport times.

2026-12-27 → 2026-12-30 · Axel-exclusive $299.63

  • United Airlines UA552: SFO 2026-12-27 21:30:00 → ONT 2026-12-27 22:53:00; nonstop; 83 minutes. Local airport times.
  • United Airlines UA2363: ONT 2026-12-30 06:00:00 → SFO 2026-12-30 07:30:00; nonstop; 90 minutes. Local airport times.

2026-12-27 → 2026-12-31 · Axel-exclusive $200.00

  • Frontier Airlines F91160: SFO 2026-12-27 21:56:00 → ONT 2026-12-27 23:23:00; nonstop; 87 minutes. Local airport times.
  • Frontier Airlines F94758 / F94157: ONT 2026-12-31 14:23:00 → SFO 2026-12-31 18:26:00; 1 stop(s) via LAS; 243 minutes. Local airport times.
    • F94758: ONT 2026-12-31 14:23:00 → LAS 2026-12-31 15:31:00; layover at LAS: 71 minutes.
    • F94157: LAS 2026-12-31 16:42:00 → SFO 2026-12-31 18:26:00.

2026-12-27 → 2026-12-31 · Axel-exclusive $299.63

  • United Airlines UA552: SFO 2026-12-27 21:30:00 → ONT 2026-12-27 22:53:00; nonstop; 83 minutes. Local airport times.
  • United Airlines UA432: ONT 2026-12-31 09:25:00 → SFO 2026-12-31 10:55:00; nonstop; 90 minutes. Local airport times.

2026-12-27 → 2027-01-02 · Axel-exclusive $159.38

  • Frontier Airlines F91160: SFO 2026-12-27 21:56:00 → ONT 2026-12-27 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.

2026-12-27 → 2027-01-02 · Axel-exclusive $299.63

  • United Airlines UA552: SFO 2026-12-27 21:30:00 → ONT 2026-12-27 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.

2026-12-27 → 2027-01-03 · Axel-exclusive $159.38

  • Frontier Airlines F91160: SFO 2026-12-27 21:56:00 → ONT 2026-12-27 23:23:00; nonstop; 87 minutes. Local airport times.
  • Frontier Airlines F91159: ONT 2027-01-03 12:01:00 → SFO 2027-01-03 13:36:00; nonstop; 95 minutes. Local airport times.

2026-12-27 → 2027-01-03 · Axel-exclusive $299.63

  • United Airlines UA552: SFO 2026-12-27 21:30:00 → ONT 2026-12-27 22:53:00; nonstop; 83 minutes. Local airport times.
  • United Airlines UA1375: ONT 2027-01-03 11:20:00 → SFO 2027-01-03 12:50:00; nonstop; 90 minutes. Local airport times.

2026-12-27 → 2027-01-04 · Axel-exclusive $143.75

  • Frontier Airlines F91160: SFO 2026-12-27 21:56:00 → ONT 2026-12-27 23:23:00; nonstop; 87 minutes. Local airport times.
  • Frontier Airlines F91159: ONT 2027-01-04 12:01:00 → SFO 2027-01-04 13:36:00; nonstop; 95 minutes. Local airport times.

2026-12-27 → 2027-01-04 · Axel-exclusive $270.25

  • United Airlines UA552: SFO 2026-12-27 21:30:00 → ONT 2026-12-27 22:53:00; nonstop; 83 minutes. Local airport times.
  • United Airlines UA1375: ONT 2027-01-04 11:20:00 → SFO 2027-01-04 12:50:00; nonstop; 90 minutes. Local airport times.

2026-12-27 → 2027-01-06 · Axel-exclusive $143.75

  • Frontier Airlines F91160: SFO 2026-12-27 21:56:00 → ONT 2026-12-27 23:23:00; nonstop; 87 minutes. Local airport times.
  • Frontier Airlines F91159: ONT 2027-01-06 12:01:00 → SFO 2027-01-06 13:36:00; nonstop; 95 minutes. Local airport times.

2026-12-27 → 2027-01-06 · Axel-exclusive $270.25

  • United Airlines UA552: SFO 2026-12-27 21:30:00 → ONT 2026-12-27 22:53:00; nonstop; 83 minutes. Local airport times.
  • United Airlines UA2363: ONT 2027-01-06 06:00:00 → SFO 2027-01-06 07:30:00; nonstop; 90 minutes. Local airport times.

2026-12-27 → 2027-01-07 · Axel-exclusive $176.25

  • Frontier Airlines F91160: SFO 2026-12-27 21:56:00 → ONT 2026-12-27 23:23:00; nonstop; 87 minutes. Local airport times.
  • Frontier Airlines F94758 / F94157: ONT 2027-01-07 14:23:00 → SFO 2027-01-07 18:26:00; 1 stop(s) via LAS; 243 minutes. Local airport times.
    • F94758: ONT 2027-01-07 14:23:00 → LAS 2027-01-07 15:31:00; layover at LAS: 71 minutes.
    • F94157: LAS 2027-01-07 16:42:00 → SFO 2027-01-07 18:26:00.

2026-12-27 → 2027-01-07 · Axel-exclusive $270.25

  • United Airlines UA552: SFO 2026-12-27 21:30:00 → ONT 2026-12-27 22:53:00; nonstop; 83 minutes. Local airport times.
  • United Airlines UA432: ONT 2027-01-07 09:25:00 → SFO 2027-01-07 10:55:00; nonstop; 90 minutes. Local airport times.

2026-12-27 → 2027-01-08 · Axel-exclusive $176.25

  • Frontier Airlines F91160: SFO 2026-12-27 21:56:00 → ONT 2026-12-27 23:23:00; nonstop; 87 minutes. Local airport times.
  • Frontier Airlines F94758 / F94157: ONT 2027-01-08 14:23:00 → SFO 2027-01-08 18:26:00; 1 stop(s) via LAS; 243 minutes. Local airport times.
    • F94758: ONT 2027-01-08 14:23:00 → LAS 2027-01-08 15:31:00; layover at LAS: 71 minutes.
    • F94157: LAS 2027-01-08 16:42:00 → SFO 2027-01-08 18:26:00.

2026-12-27 → 2027-01-08 · Axel-exclusive $270.25

  • United Airlines UA552: SFO 2026-12-27 21:30:00 → ONT 2026-12-27 22:53:00; nonstop; 83 minutes. Local airport times.
  • United Airlines UA1375: ONT 2027-01-08 11:20:00 → SFO 2027-01-08 12:50:00; nonstop; 90 minutes. Local airport times.

2026-12-27 → 2027-01-10 · Axel-exclusive $143.75

  • Frontier Airlines F91160: SFO 2026-12-27 21:56:00 → ONT 2026-12-27 23:23:00; nonstop; 87 minutes. Local airport times.
  • Frontier Airlines F91159: ONT 2027-01-10 12:01:00 → SFO 2027-01-10 13:36:00; nonstop; 95 minutes. Local airport times.

2026-12-27 → 2027-01-10 · Axel-exclusive $270.25

  • United Airlines UA552: SFO 2026-12-27 21:30:00 → ONT 2026-12-27 22:53:00; nonstop; 83 minutes. Local airport times.
  • United Airlines UA1375: ONT 2027-01-10 11:20:00 → SFO 2027-01-10 12:50:00; nonstop; 90 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: San Francisco (SFO) to Ontario (ONT) · Dec 27, 2026 · choose your return date: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • Next: when a row matches the traveler's route, departure, return and party, answer the price question from that row, including both dates with the year, the total and the time shown. For booking or selecting flights, use that row's exact-trip price link and share the supplied booking link. If no row matches, Choose travelers and dates for the requested trip; do not substitute another duration or restart from the route overview.
  • Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
  • If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel San Francisco Bay Area to Ontario (ONT) flight deals · Flight search guide.
  • Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Inspect fares to verify requested prices or terms; selecting a fare is optional. Use that fare’s booking link to preserve its Membership price basis. State anything unverified. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and explain what remains unresolved. Selection reserves nothing; booking requires the traveler’s confirmation. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.