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Route overview: Saint Louis to San Francisco (SFO) flight deals

Saint Louis → San Francisco

Dec 25, 2026 · choose your return date

STL → SFO1 adulteconomyOne way and round trips

30 flight options · 3 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 25, 2026 · One wayFrontier AirlinesUp to 1 stop each way$141.75 Dec 25, 2026 · One waySouthwest AirlinesNonstop$249.75 Dec 25, 2026 – Dec 26, 2026 · 1 nightFrontier AirlinesUp to 1 stop each way$263.26 Dec 25, 2026 – Dec 26, 2026 · 1 nightUnited AirlinesNonstop$519.76 Dec 25, 2026 – Dec 27, 2026 · 2 nightsFrontier AirlinesUp to 1 stop each way$263.26 Dec 25, 2026 – Dec 27, 2026 · 2 nightsUnited AirlinesNonstop$519.76 Dec 25, 2026 – Dec 28, 2026 · 3 nightsFrontier AirlinesUp to 1 stop each way$253.51 Dec 25, 2026 – Dec 28, 2026 · 3 nightsSouthwest AirlinesNonstop$455.00 Dec 25, 2026 – Dec 29, 2026 · 4 nightsFrontier AirlinesUp to 1 stop each way$253.51 Dec 25, 2026 – Dec 29, 2026 · 4 nightsSouthwest AirlinesNonstop$455.00 Dec 25, 2026 – Dec 30, 2026 · 5 nightsFrontier AirlinesUp to 1 stop each way$253.51 Dec 25, 2026 – Dec 30, 2026 · 5 nightsUnited AirlinesNonstop$500.51 Dec 25, 2026 – Dec 31, 2026 · 6 nightsFrontier AirlinesUp to 1 stop each way$253.51 Dec 25, 2026 – Dec 31, 2026 · 6 nightsSouthwest AirlinesNonstop$455.00 Dec 25, 2026 – Jan 1, 2027 · 7 nightsFrontier AirlinesUp to 1 stop each way$246.68 Dec 25, 2026 – Jan 1, 2027 · 7 nightsSouthwest AirlinesNonstop$442.75 Dec 25, 2026 – Jan 2, 2027 · 8 nightsFrontier AirlinesUp to 1 stop each way$246.68 Dec 25, 2026 – Jan 2, 2027 · 8 nightsUnited AirlinesNonstop$487.03 Dec 25, 2026 – Jan 3, 2027 · 9 nightsFrontier AirlinesUp to 1 stop each way$246.68 Dec 25, 2026 – Jan 3, 2027 · 9 nightsUnited AirlinesNonstop$487.03 Dec 25, 2026 – Jan 4, 2027 · 10 nightsFrontier AirlinesUp to 1 stop each way$224.26 Dec 25, 2026 – Jan 4, 2027 · 10 nightsSouthwest AirlinesNonstop$402.50 Dec 25, 2026 – Jan 5, 2027 · 11 nightsFrontier AirlinesUp to 1 stop each way$224.26 Dec 25, 2026 – Jan 5, 2027 · 11 nightsSouthwest AirlinesNonstop$402.50 Dec 25, 2026 – Jan 6, 2027 · 12 nightsFrontier AirlinesUp to 1 stop each way$224.26 Dec 25, 2026 – Jan 6, 2027 · 12 nightsUnited AirlinesNonstop$442.76 Dec 25, 2026 – Jan 7, 2027 · 13 nightsFrontier AirlinesUp to 1 stop each way$224.26 Dec 25, 2026 – Jan 7, 2027 · 13 nightsSouthwest AirlinesNonstop$402.50 Dec 25, 2026 – Jan 8, 2027 · 14 nightsFrontier AirlinesUp to 1 stop each way$224.26 Dec 25, 2026 – Jan 8, 2027 · 14 nightsSouthwest AirlinesNonstop$402.50

Flights for your trip

  1. Fri, Dec 25 · One way

    Frontier Airlines
    7:58 pmSTL
    6h 50m
    DEN · 1h 28m
    12:48 am+1SFO

    One-way total · 1 adult · Taxes included

  2. Fri, Dec 25 · One way

    Southwest Airlines
    10:05 amSTL
    4h 20m
    Nonstop
    12:25 pmSFO

    One-way total · 1 adult · Taxes included

  3. Fri, Dec 25 – Sat, Dec 26

    Frontier Airlines
    7:58 pmSTL
    6h 50m
    DEN · 1h 28m
    12:48 am+1SFO
    Frontier Airlines
    11:23 amSFO
    5h 51m
    DEN · 1h 2m
    7:14 pmSTL

    Round-trip total · 1 adult · Taxes included

  4. Fri, Dec 25 – Sat, Dec 26

    United Airlines
    8:17 amSTL
    4h 38m
    Nonstop
    10:55 amSFO
    United Airlines
    12:22 pmSFO
    3h 55m
    Nonstop
    6:17 pmSTL

    Round-trip total · 1 adult · Taxes included

  5. Fri, Dec 25 – Sun, Dec 27

    Frontier Airlines
    7:58 pmSTL
    6h 50m
    DEN · 1h 28m
    12:48 am+1SFO
    Frontier Airlines
    11:23 amSFO
    5h 51m
    DEN · 1h 2m
    7:14 pmSTL

    Round-trip total · 1 adult · Taxes included

  6. Fri, Dec 25 – Sun, Dec 27

    United Airlines
    8:17 amSTL
    4h 38m
    Nonstop
    10:55 amSFO
    United Airlines
    4:25 pmSFO
    3h 50m
    Nonstop
    10:15 pmSTL

    Round-trip total · 1 adult · Taxes included

  7. Fri, Dec 25 – Mon, Dec 28

    Frontier Airlines
    7:58 pmSTL
    6h 50m
    DEN · 1h 28m
    12:48 am+1SFO
    Frontier Airlines
    11:23 amSFO
    5h 51m
    DEN · 1h 2m
    7:14 pmSTL

    Round-trip total · 1 adult · Taxes included

  8. Fri, Dec 25 – Mon, Dec 28

    Southwest Airlines
    10:05 amSTL
    4h 20m
    Nonstop
    12:25 pmSFO
    Southwest Airlines
    11:15 amSFO
    3h 55m
    Nonstop
    5:10 pmSTL

    Round-trip total · 1 adult · Taxes included

  9. Fri, Dec 25 – Tue, Dec 29

    Frontier Airlines
    7:58 pmSTL
    6h 50m
    DEN · 1h 28m
    12:48 am+1SFO
    Frontier Airlines
    11:23 amSFO
    5h 51m
    DEN · 1h 2m
    7:14 pmSTL

    Round-trip total · 1 adult · Taxes included

  10. Fri, Dec 25 – Tue, Dec 29

    Southwest Airlines
    10:05 amSTL
    4h 20m
    Nonstop
    12:25 pmSFO
    Southwest Airlines
    11:15 amSFO
    3h 55m
    Nonstop
    5:10 pmSTL

    Round-trip total · 1 adult · Taxes included

  11. Fri, Dec 25 – Thu, Dec 31

    Frontier Airlines
    7:58 pmSTL
    6h 50m
    DEN · 1h 28m
    12:48 am+1SFO
    Frontier Airlines
    11:23 amSFO
    5h 51m
    DEN · 1h 2m
    7:14 pmSTL

    Round-trip total · 1 adult · Taxes included

  12. Fri, Dec 25 – Thu, Dec 31

    Southwest Airlines
    10:05 amSTL
    4h 20m
    Nonstop
    12:25 pmSFO
    Southwest Airlines
    1:05 pmSFO
    3h 50m
    Nonstop
    6:55 pmSTL

    Round-trip total · 1 adult · Taxes included

  13. Fri, Dec 25 – Fri, Jan 1

    Frontier Airlines
    7:58 pmSTL
    6h 50m
    DEN · 1h 28m
    12:48 am+1SFO
    Frontier Airlines
    11:23 amSFO
    5h 51m
    DEN · 1h 2m
    7:14 pmSTL

    Round-trip total · 1 adult · Taxes included

  14. Fri, Dec 25 – Fri, Jan 1

    Southwest Airlines
    10:05 amSTL
    4h 20m
    Nonstop
    12:25 pmSFO
    Southwest Airlines
    1:05 pmSFO
    3h 50m
    Nonstop
    6:55 pmSTL

    Round-trip total · 1 adult · Taxes included

  15. Fri, Dec 25 – Sat, Jan 2

    Frontier Airlines
    7:58 pmSTL
    6h 50m
    DEN · 1h 28m
    12:48 am+1SFO
    Frontier Airlines
    11:23 amSFO
    5h 51m
    DEN · 1h 2m
    7:14 pmSTL

    Round-trip total · 1 adult · Taxes included

  16. Fri, Dec 25 – Sat, Jan 2

    United Airlines
    8:17 amSTL
    4h 38m
    Nonstop
    10:55 amSFO
    United Airlines
    12:22 pmSFO
    3h 55m
    Nonstop
    6:17 pmSTL

    Round-trip total · 1 adult · Taxes included

  17. Fri, Dec 25 – Mon, Jan 4

    Frontier Airlines
    7:58 pmSTL
    6h 50m
    DEN · 1h 28m
    12:48 am+1SFO
    Frontier Airlines
    11:23 amSFO
    5h 51m
    DEN · 1h 2m
    7:14 pmSTL

    Round-trip total · 1 adult · Taxes included

  18. Fri, Dec 25 – Mon, Jan 4

    Southwest Airlines
    10:05 amSTL
    4h 20m
    Nonstop
    12:25 pmSFO
    Southwest Airlines
    11:15 amSFO
    3h 55m
    Nonstop
    5:10 pmSTL

    Round-trip total · 1 adult · Taxes included

  19. Fri, Dec 25 – Tue, Jan 5

    Frontier Airlines
    7:58 pmSTL
    6h 50m
    DEN · 1h 28m
    12:48 am+1SFO
    Frontier Airlines
    11:23 amSFO
    5h 51m
    DEN · 1h 2m
    7:14 pmSTL

    Round-trip total · 1 adult · Taxes included

  20. Fri, Dec 25 – Tue, Jan 5

    Southwest Airlines
    10:05 amSTL
    4h 20m
    Nonstop
    12:25 pmSFO
    Southwest Airlines
    11:15 amSFO
    3h 55m
    Nonstop
    5:10 pmSTL

    Round-trip total · 1 adult · Taxes included

  21. Fri, Dec 25 – Wed, Jan 6

    Frontier Airlines
    7:58 pmSTL
    6h 50m
    DEN · 1h 28m
    12:48 am+1SFO
    Frontier Airlines
    11:23 amSFO
    5h 51m
    DEN · 1h 2m
    7:14 pmSTL

    Round-trip total · 1 adult · Taxes included

  22. Fri, Dec 25 – Wed, Jan 6

    United Airlines
    8:17 amSTL
    4h 38m
    Nonstop
    10:55 amSFO
    United Airlines
    12:15 pmSFO
    3h 50m
    Nonstop
    6:05 pmSTL

    Round-trip total · 1 adult · Taxes included

  23. Fri, Dec 25 – Fri, Jan 8

    Frontier Airlines
    7:58 pmSTL
    6h 50m
    DEN · 1h 28m
    12:48 am+1SFO
    Frontier Airlines
    11:23 amSFO
    5h 51m
    DEN · 1h 2m
    7:14 pmSTL

    Round-trip total · 1 adult · Taxes included

  24. Fri, Dec 25 – Fri, Jan 8

    Southwest Airlines
    10:05 amSTL
    4h 20m
    Nonstop
    12:25 pmSFO
    Southwest Airlines
    1:05 pmSFO
    3h 50m
    Nonstop
    6:55 pmSTL

    Round-trip total · 1 adult · Taxes included

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1 of 24

Make this trip yours

STL ⇄ SFO

Economy

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Explore this route

All dates for this routeDec 24, 2026 · Return optionsDec 26, 2026 · Return optionsHotels in San Francisco with Axel
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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.

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)
2026-12-25 · one waySouthwest AirlinesWN191Axel-exclusive $249.752026-10-29T01:29:02Z
2026-12-25 · one wayFrontier AirlinesF94567 + F93439Axel-exclusive $141.752026-10-29T01:29:02Z
2026-12-25 → 2026-12-26United AirlinesUA1257 / UA1588Axel-exclusive $519.762026-10-29T01:29:02Z
2026-12-25 → 2026-12-26Frontier AirlinesF94567 + F93439 / F93436 + F93302Axel-exclusive $263.262026-10-29T01:29:02Z
2026-12-25 → 2026-12-27United AirlinesUA1257 / UA1924Axel-exclusive $519.762026-10-29T01:29:02Z
2026-12-25 → 2026-12-27Frontier AirlinesF94567 + F93439 / F93436 + F93302Axel-exclusive $263.262026-10-29T01:29:02Z
2026-12-25 → 2026-12-28Southwest AirlinesWN191 / WN2989Axel-exclusive $455.002026-10-29T01:29:02Z
2026-12-25 → 2026-12-28Frontier AirlinesF94567 + F93439 / F93436 + F93302Axel-exclusive $253.512026-10-29T01:29:02Z
2026-12-25 → 2026-12-29Southwest AirlinesWN191 / WN2989Axel-exclusive $455.002026-10-29T01:29:02Z
2026-12-25 → 2026-12-29Frontier AirlinesF94567 + F93439 / F93436 + F93302Axel-exclusive $253.512026-10-29T01:29:02Z
2026-12-25 → 2026-12-30United AirlinesUA1257 / UA1905Axel-exclusive $500.512026-10-29T01:29:02Z
2026-12-25 → 2026-12-30Frontier AirlinesF94567 + F93439 / F93436 + F93302Axel-exclusive $253.512026-10-29T01:29:02Z
2026-12-25 → 2026-12-31Southwest AirlinesWN191 / WN2989Axel-exclusive $455.002026-10-29T01:29:02Z
2026-12-25 → 2026-12-31Frontier AirlinesF94567 + F93439 / F93436 + F93302Axel-exclusive $253.512026-10-29T01:29:02Z
2026-12-25 → 2027-01-01Southwest AirlinesWN191 / WN2989Axel-exclusive $442.752026-10-29T01:29:02Z
2026-12-25 → 2027-01-01Frontier AirlinesF94567 + F93439 / F93436 + F93302Axel-exclusive $246.682026-10-29T01:29:02Z
2026-12-25 → 2027-01-02United AirlinesUA1257 / UA1588Axel-exclusive $487.032026-10-29T01:29:02Z
2026-12-25 → 2027-01-02Frontier AirlinesF94567 + F93439 / F93436 + F93302Axel-exclusive $246.682026-10-29T01:29:02Z
2026-12-25 → 2027-01-03United AirlinesUA1257 / UA1924Axel-exclusive $487.032026-10-29T01:29:02Z
2026-12-25 → 2027-01-03Frontier AirlinesF94567 + F93439 / F93436 + F93302Axel-exclusive $246.682026-10-29T01:29:02Z
2026-12-25 → 2027-01-04Southwest AirlinesWN191 / WN2989Axel-exclusive $402.502026-10-29T01:29:02Z
2026-12-25 → 2027-01-04Frontier AirlinesF94567 + F93439 / F93436 + F93302Axel-exclusive $224.262026-10-29T01:29:02Z
2026-12-25 → 2027-01-05Southwest AirlinesWN191 / WN2989Axel-exclusive $402.502026-10-29T01:29:02Z
2026-12-25 → 2027-01-05Frontier AirlinesF94567 + F93439 / F93436 + F93302Axel-exclusive $224.262026-10-29T01:29:02Z
2026-12-25 → 2027-01-06United AirlinesUA1257 / UA1905Axel-exclusive $442.762026-10-29T01:29:02Z
2026-12-25 → 2027-01-06Frontier AirlinesF94567 + F93439 / F93436 + F93302Axel-exclusive $224.262026-10-29T01:29:02Z
2026-12-25 → 2027-01-07Southwest AirlinesWN191 / WN2989Axel-exclusive $402.502026-10-29T01:29:02Z
2026-12-25 → 2027-01-07Frontier AirlinesF94567 + F93439 / F93436 + F93302Axel-exclusive $224.262026-10-29T01:29:02Z
2026-12-25 → 2027-01-08Southwest AirlinesWN191 / WN2989Axel-exclusive $402.502026-10-29T01:29:02Z
2026-12-25 → 2027-01-08Frontier AirlinesF94567 + F93439 / F93436 + F93302Axel-exclusive $224.262026-10-29T01:29:02Z

Route overview: Saint Louis to San Francisco (SFO) flight deals

2026-12-25 · one way · Axel-exclusive $141.75

  • Frontier Airlines F94567 / F93439: STL 2026-12-25 19:58:00 → SFO 2026-12-26 00:48:00; 1 stop(s) via DEN; 410 minutes. Local airport times.
    • F94567: STL 2026-12-25 19:58:00 → DEN 2026-12-25 21:29:00; layover at DEN: 88 minutes.
    • F93439: DEN 2026-12-25 22:57:00 → SFO 2026-12-26 00:48:00.

2026-12-25 · one way · Axel-exclusive $249.75

  • Southwest Airlines WN191: STL 2026-12-25 10:05:00 → SFO 2026-12-25 12:25:00; nonstop; 260 minutes. Local airport times.

2026-12-25 → 2026-12-26 · Axel-exclusive $263.26

  • Frontier Airlines F94567 / F93439: STL 2026-12-25 19:58:00 → SFO 2026-12-26 00:48:00; 1 stop(s) via DEN; 410 minutes. Local airport times.
    • F94567: STL 2026-12-25 19:58:00 → DEN 2026-12-25 21:29:00; layover at DEN: 88 minutes.
    • F93439: DEN 2026-12-25 22:57:00 → SFO 2026-12-26 00:48:00.
  • Frontier Airlines F93436 / F93302: SFO 2026-12-26 11:23:00 → STL 2026-12-26 19:14:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F93436: SFO 2026-12-26 11:23:00 → DEN 2026-12-26 15:07:00; layover at DEN: 62 minutes.
    • F93302: DEN 2026-12-26 16:09:00 → STL 2026-12-26 19:14:00.

2026-12-25 → 2026-12-26 · Axel-exclusive $519.76

  • United Airlines UA1257: STL 2026-12-25 08:17:00 → SFO 2026-12-25 10:55:00; nonstop; 278 minutes. Local airport times.
  • United Airlines UA1588: SFO 2026-12-26 12:22:00 → STL 2026-12-26 18:17:00; nonstop; 235 minutes. Local airport times.

2026-12-25 → 2026-12-27 · Axel-exclusive $263.26

  • Frontier Airlines F94567 / F93439: STL 2026-12-25 19:58:00 → SFO 2026-12-26 00:48:00; 1 stop(s) via DEN; 410 minutes. Local airport times.
    • F94567: STL 2026-12-25 19:58:00 → DEN 2026-12-25 21:29:00; layover at DEN: 88 minutes.
    • F93439: DEN 2026-12-25 22:57:00 → SFO 2026-12-26 00:48:00.
  • Frontier Airlines F93436 / F93302: SFO 2026-12-27 11:23:00 → STL 2026-12-27 19:14:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F93436: SFO 2026-12-27 11:23:00 → DEN 2026-12-27 15:07:00; layover at DEN: 62 minutes.
    • F93302: DEN 2026-12-27 16:09:00 → STL 2026-12-27 19:14:00.

2026-12-25 → 2026-12-27 · Axel-exclusive $519.76

  • United Airlines UA1257: STL 2026-12-25 08:17:00 → SFO 2026-12-25 10:55:00; nonstop; 278 minutes. Local airport times.
  • United Airlines UA1924: SFO 2026-12-27 16:25:00 → STL 2026-12-27 22:15:00; nonstop; 230 minutes. Local airport times.

2026-12-25 → 2026-12-28 · Axel-exclusive $253.51

  • Frontier Airlines F94567 / F93439: STL 2026-12-25 19:58:00 → SFO 2026-12-26 00:48:00; 1 stop(s) via DEN; 410 minutes. Local airport times.
    • F94567: STL 2026-12-25 19:58:00 → DEN 2026-12-25 21:29:00; layover at DEN: 88 minutes.
    • F93439: DEN 2026-12-25 22:57:00 → SFO 2026-12-26 00:48:00.
  • Frontier Airlines F93436 / F93302: SFO 2026-12-28 11:23:00 → STL 2026-12-28 19:14:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F93436: SFO 2026-12-28 11:23:00 → DEN 2026-12-28 15:07:00; layover at DEN: 62 minutes.
    • F93302: DEN 2026-12-28 16:09:00 → STL 2026-12-28 19:14:00.

2026-12-25 → 2026-12-28 · Axel-exclusive $455.00

  • Southwest Airlines WN191: STL 2026-12-25 10:05:00 → SFO 2026-12-25 12:25:00; nonstop; 260 minutes. Local airport times.
  • Southwest Airlines WN2989: SFO 2026-12-28 11:15:00 → STL 2026-12-28 17:10:00; nonstop; 235 minutes. Local airport times.

2026-12-25 → 2026-12-29 · Axel-exclusive $253.51

  • Frontier Airlines F94567 / F93439: STL 2026-12-25 19:58:00 → SFO 2026-12-26 00:48:00; 1 stop(s) via DEN; 410 minutes. Local airport times.
    • F94567: STL 2026-12-25 19:58:00 → DEN 2026-12-25 21:29:00; layover at DEN: 88 minutes.
    • F93439: DEN 2026-12-25 22:57:00 → SFO 2026-12-26 00:48:00.
  • Frontier Airlines F93436 / F93302: SFO 2026-12-29 11:23:00 → STL 2026-12-29 19:14:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F93436: SFO 2026-12-29 11:23:00 → DEN 2026-12-29 15:07:00; layover at DEN: 62 minutes.
    • F93302: DEN 2026-12-29 16:09:00 → STL 2026-12-29 19:14:00.

2026-12-25 → 2026-12-29 · Axel-exclusive $455.00

  • Southwest Airlines WN191: STL 2026-12-25 10:05:00 → SFO 2026-12-25 12:25:00; nonstop; 260 minutes. Local airport times.
  • Southwest Airlines WN2989: SFO 2026-12-29 11:15:00 → STL 2026-12-29 17:10:00; nonstop; 235 minutes. Local airport times.

2026-12-25 → 2026-12-31 · Axel-exclusive $253.51

  • Frontier Airlines F94567 / F93439: STL 2026-12-25 19:58:00 → SFO 2026-12-26 00:48:00; 1 stop(s) via DEN; 410 minutes. Local airport times.
    • F94567: STL 2026-12-25 19:58:00 → DEN 2026-12-25 21:29:00; layover at DEN: 88 minutes.
    • F93439: DEN 2026-12-25 22:57:00 → SFO 2026-12-26 00:48:00.
  • Frontier Airlines F93436 / F93302: SFO 2026-12-31 11:23:00 → STL 2026-12-31 19:14:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F93436: SFO 2026-12-31 11:23:00 → DEN 2026-12-31 15:07:00; layover at DEN: 62 minutes.
    • F93302: DEN 2026-12-31 16:09:00 → STL 2026-12-31 19:14:00.

2026-12-25 → 2026-12-31 · Axel-exclusive $455.00

  • Southwest Airlines WN191: STL 2026-12-25 10:05:00 → SFO 2026-12-25 12:25:00; nonstop; 260 minutes. Local airport times.
  • Southwest Airlines WN2989: SFO 2026-12-31 13:05:00 → STL 2026-12-31 18:55:00; nonstop; 230 minutes. Local airport times.

2026-12-25 → 2027-01-01 · Axel-exclusive $246.68

  • Frontier Airlines F94567 / F93439: STL 2026-12-25 19:58:00 → SFO 2026-12-26 00:48:00; 1 stop(s) via DEN; 410 minutes. Local airport times.
    • F94567: STL 2026-12-25 19:58:00 → DEN 2026-12-25 21:29:00; layover at DEN: 88 minutes.
    • F93439: DEN 2026-12-25 22:57:00 → SFO 2026-12-26 00:48:00.
  • Frontier Airlines F93436 / F93302: SFO 2027-01-01 11:23:00 → STL 2027-01-01 19:14:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F93436: SFO 2027-01-01 11:23:00 → DEN 2027-01-01 15:07:00; layover at DEN: 62 minutes.
    • F93302: DEN 2027-01-01 16:09:00 → STL 2027-01-01 19:14:00.

2026-12-25 → 2027-01-01 · Axel-exclusive $442.75

  • Southwest Airlines WN191: STL 2026-12-25 10:05:00 → SFO 2026-12-25 12:25:00; nonstop; 260 minutes. Local airport times.
  • Southwest Airlines WN2989: SFO 2027-01-01 13:05:00 → STL 2027-01-01 18:55:00; nonstop; 230 minutes. Local airport times.

2026-12-25 → 2027-01-02 · Axel-exclusive $246.68

  • Frontier Airlines F94567 / F93439: STL 2026-12-25 19:58:00 → SFO 2026-12-26 00:48:00; 1 stop(s) via DEN; 410 minutes. Local airport times.
    • F94567: STL 2026-12-25 19:58:00 → DEN 2026-12-25 21:29:00; layover at DEN: 88 minutes.
    • F93439: DEN 2026-12-25 22:57:00 → SFO 2026-12-26 00:48:00.
  • Frontier Airlines F93436 / F93302: SFO 2027-01-02 11:23:00 → STL 2027-01-02 19:14:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F93436: SFO 2027-01-02 11:23:00 → DEN 2027-01-02 15:07:00; layover at DEN: 62 minutes.
    • F93302: DEN 2027-01-02 16:09:00 → STL 2027-01-02 19:14:00.

2026-12-25 → 2027-01-02 · Axel-exclusive $487.03

  • United Airlines UA1257: STL 2026-12-25 08:17:00 → SFO 2026-12-25 10:55:00; nonstop; 278 minutes. Local airport times.
  • United Airlines UA1588: SFO 2027-01-02 12:22:00 → STL 2027-01-02 18:17:00; nonstop; 235 minutes. Local airport times.

2026-12-25 → 2027-01-04 · Axel-exclusive $224.26

  • Frontier Airlines F94567 / F93439: STL 2026-12-25 19:58:00 → SFO 2026-12-26 00:48:00; 1 stop(s) via DEN; 410 minutes. Local airport times.
    • F94567: STL 2026-12-25 19:58:00 → DEN 2026-12-25 21:29:00; layover at DEN: 88 minutes.
    • F93439: DEN 2026-12-25 22:57:00 → SFO 2026-12-26 00:48:00.
  • Frontier Airlines F93436 / F93302: SFO 2027-01-04 11:23:00 → STL 2027-01-04 19:14:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F93436: SFO 2027-01-04 11:23:00 → DEN 2027-01-04 15:07:00; layover at DEN: 62 minutes.
    • F93302: DEN 2027-01-04 16:09:00 → STL 2027-01-04 19:14:00.

2026-12-25 → 2027-01-04 · Axel-exclusive $402.50

  • Southwest Airlines WN191: STL 2026-12-25 10:05:00 → SFO 2026-12-25 12:25:00; nonstop; 260 minutes. Local airport times.
  • Southwest Airlines WN2989: SFO 2027-01-04 11:15:00 → STL 2027-01-04 17:10:00; nonstop; 235 minutes. Local airport times.

2026-12-25 → 2027-01-05 · Axel-exclusive $224.26

  • Frontier Airlines F94567 / F93439: STL 2026-12-25 19:58:00 → SFO 2026-12-26 00:48:00; 1 stop(s) via DEN; 410 minutes. Local airport times.
    • F94567: STL 2026-12-25 19:58:00 → DEN 2026-12-25 21:29:00; layover at DEN: 88 minutes.
    • F93439: DEN 2026-12-25 22:57:00 → SFO 2026-12-26 00:48:00.
  • Frontier Airlines F93436 / F93302: SFO 2027-01-05 11:23:00 → STL 2027-01-05 19:14:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F93436: SFO 2027-01-05 11:23:00 → DEN 2027-01-05 15:07:00; layover at DEN: 62 minutes.
    • F93302: DEN 2027-01-05 16:09:00 → STL 2027-01-05 19:14:00.

2026-12-25 → 2027-01-05 · Axel-exclusive $402.50

  • Southwest Airlines WN191: STL 2026-12-25 10:05:00 → SFO 2026-12-25 12:25:00; nonstop; 260 minutes. Local airport times.
  • Southwest Airlines WN2989: SFO 2027-01-05 11:15:00 → STL 2027-01-05 17:10:00; nonstop; 235 minutes. Local airport times.

2026-12-25 → 2027-01-06 · Axel-exclusive $224.26

  • Frontier Airlines F94567 / F93439: STL 2026-12-25 19:58:00 → SFO 2026-12-26 00:48:00; 1 stop(s) via DEN; 410 minutes. Local airport times.
    • F94567: STL 2026-12-25 19:58:00 → DEN 2026-12-25 21:29:00; layover at DEN: 88 minutes.
    • F93439: DEN 2026-12-25 22:57:00 → SFO 2026-12-26 00:48:00.
  • Frontier Airlines F93436 / F93302: SFO 2027-01-06 11:23:00 → STL 2027-01-06 19:14:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F93436: SFO 2027-01-06 11:23:00 → DEN 2027-01-06 15:07:00; layover at DEN: 62 minutes.
    • F93302: DEN 2027-01-06 16:09:00 → STL 2027-01-06 19:14:00.

2026-12-25 → 2027-01-06 · Axel-exclusive $442.76

  • United Airlines UA1257: STL 2026-12-25 08:17:00 → SFO 2026-12-25 10:55:00; nonstop; 278 minutes. Local airport times.
  • United Airlines UA1905: SFO 2027-01-06 12:15:00 → STL 2027-01-06 18:05:00; nonstop; 230 minutes. Local airport times.

2026-12-25 → 2027-01-08 · Axel-exclusive $224.26

  • Frontier Airlines F94567 / F93439: STL 2026-12-25 19:58:00 → SFO 2026-12-26 00:48:00; 1 stop(s) via DEN; 410 minutes. Local airport times.
    • F94567: STL 2026-12-25 19:58:00 → DEN 2026-12-25 21:29:00; layover at DEN: 88 minutes.
    • F93439: DEN 2026-12-25 22:57:00 → SFO 2026-12-26 00:48:00.
  • Frontier Airlines F93436 / F93302: SFO 2027-01-08 11:23:00 → STL 2027-01-08 19:14:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F93436: SFO 2027-01-08 11:23:00 → DEN 2027-01-08 15:07:00; layover at DEN: 62 minutes.
    • F93302: DEN 2027-01-08 16:09:00 → STL 2027-01-08 19:14:00.

2026-12-25 → 2027-01-08 · Axel-exclusive $402.50

  • Southwest Airlines WN191: STL 2026-12-25 10:05:00 → SFO 2026-12-25 12:25:00; nonstop; 260 minutes. Local airport times.
  • Southwest Airlines WN2989: SFO 2027-01-08 13:05:00 → STL 2027-01-08 18:55:00; nonstop; 230 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: Saint Louis (STL) to San Francisco (SFO) · Dec 25, 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 Saint Louis to San Francisco (SFO) 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.