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Route overview: San Diego to Saint Louis (STL) flight deals

San Diego → Saint Louis

Dec 8, 2026 · choose your return date

SAN → STL1 adulteconomyOne way and round trips

30 flight options · 4 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 8, 2026 · One wayAmerican AirlinesUp to 1 stop each way$185.00 Dec 8, 2026 · One waySouthwest AirlinesNonstop$195.00 Dec 8, 2026 – Dec 9, 2026 · 1 nightAmerican AirlinesUp to 1 stop each way$350.00 Dec 8, 2026 – Dec 9, 2026 · 1 nightSouthwest AirlinesNonstop$370.00 Dec 8, 2026 – Dec 10, 2026 · 2 nightsAmerican AirlinesUp to 1 stop each way$350.00 Dec 8, 2026 – Dec 10, 2026 · 2 nightsSouthwest AirlinesNonstop$370.00 Dec 8, 2026 – Dec 11, 2026 · 3 nightsUnited Airlines / Frontier AirlinesUp to 1 stop each way$285.00 Dec 8, 2026 – Dec 11, 2026 · 3 nightsSouthwest AirlinesNonstop$370.00 Dec 8, 2026 – Dec 12, 2026 · 4 nightsAmerican AirlinesUp to 1 stop each way$350.00 Dec 8, 2026 – Dec 12, 2026 · 4 nightsSouthwest AirlinesNonstop$370.00 Dec 8, 2026 – Dec 13, 2026 · 5 nightsUnited Airlines / Southwest AirlinesUp to 1 stop each way$345.00 Dec 8, 2026 – Dec 13, 2026 · 5 nightsSouthwest AirlinesUp to 1 stop each way$350.00 Dec 8, 2026 – Dec 14, 2026 · 6 nightsAmerican AirlinesUp to 1 stop each way$350.00 Dec 8, 2026 – Dec 14, 2026 · 6 nightsSouthwest AirlinesNonstop$370.00 Dec 8, 2026 – Dec 15, 2026 · 7 nightsAmerican AirlinesUp to 1 stop each way$350.00 Dec 8, 2026 – Dec 15, 2026 · 7 nightsSouthwest AirlinesNonstop$370.00 Dec 8, 2026 – Dec 16, 2026 · 8 nightsAmerican AirlinesUp to 1 stop each way$350.00 Dec 8, 2026 – Dec 16, 2026 · 8 nightsSouthwest AirlinesNonstop$370.00 Dec 8, 2026 – Dec 17, 2026 · 9 nightsAmerican AirlinesUp to 1 stop each way$350.00 Dec 8, 2026 – Dec 17, 2026 · 9 nightsSouthwest AirlinesNonstop$370.00 Dec 8, 2026 – Dec 18, 2026 · 10 nightsUnited Airlines / Frontier AirlinesUp to 1 stop each way$327.00 Dec 8, 2026 – Dec 18, 2026 · 10 nightsSouthwest AirlinesNonstop$444.00 Dec 8, 2026 – Dec 19, 2026 · 11 nightsAmerican AirlinesUp to 1 stop each way$420.00 Dec 8, 2026 – Dec 19, 2026 · 11 nightsSouthwest AirlinesNonstop$444.00 Dec 8, 2026 – Dec 20, 2026 · 12 nightsUnited Airlines / Southwest AirlinesUp to 1 stop each way$411.00 Dec 8, 2026 – Dec 20, 2026 · 12 nightsSouthwest AirlinesUp to 1 stop each way$416.00 Dec 8, 2026 – Dec 21, 2026 · 13 nightsAmerican AirlinesUp to 1 stop each way$420.00 Dec 8, 2026 – Dec 21, 2026 · 13 nightsSouthwest AirlinesNonstop$444.00 Dec 8, 2026 – Dec 22, 2026 · 14 nightsAmerican AirlinesUp to 1 stop each way$420.00 Dec 8, 2026 – Dec 22, 2026 · 14 nightsSouthwest AirlinesNonstop$444.00

Flights for your trip

  1. Tue, Dec 8 · One way

    American Airlines
    3:13 pmSAN
    6h 21m
    DFW · 1h 15m
    11:34 pmSTL

    One-way total · 1 adult · Taxes included

  2. Tue, Dec 8 · One way

    Southwest Airlines
    11:55 amSAN
    3h 30m
    Nonstop
    5:25 pmSTL

    One-way total · 1 adult · Taxes included

  3. Tue, Dec 8 – Wed, Dec 9

    American Airlines
    3:13 pmSAN
    6h 21m
    DFW · 1h 15m
    11:34 pmSTL
    American Airlines
    2:23 pmSTL
    6h 1m
    PHX · 1h 14m
    6:24 pmSAN

    Round-trip total · 1 adult · Taxes included

  4. Tue, Dec 8 – Wed, Dec 9

    Southwest Airlines
    11:55 amSAN
    3h 30m
    Nonstop
    5:25 pmSTL
    Southwest Airlines
    8:25 amSTL
    3h 55m
    Nonstop
    10:20 amSAN

    Round-trip total · 1 adult · Taxes included

  5. Tue, Dec 8 – Thu, Dec 10

    American Airlines
    3:13 pmSAN
    6h 21m
    DFW · 1h 15m
    11:34 pmSTL
    American Airlines
    2:23 pmSTL
    6h 1m
    PHX · 1h 14m
    6:24 pmSAN

    Round-trip total · 1 adult · Taxes included

  6. Tue, Dec 8 – Thu, Dec 10

    Southwest Airlines
    11:55 amSAN
    3h 30m
    Nonstop
    5:25 pmSTL
    Southwest Airlines
    7:55 amSTL
    3h 55m
    Nonstop
    9:50 amSAN

    Round-trip total · 1 adult · Taxes included

  7. Tue, Dec 8 – Fri, Dec 11

    United Airlines
    8:40 amSAN
    6h 17m
    DEN · 1h 49m
    4:57 pmSTL
    Frontier Airlines
    7:58 pmSTL
    6h
    DEN · 1h
    11:58 pmSAN

    Round-trip total · 1 adult · Taxes included

  8. Tue, Dec 8 – Fri, Dec 11

    Southwest Airlines
    11:55 amSAN
    3h 30m
    Nonstop
    5:25 pmSTL
    Southwest Airlines
    7:55 amSTL
    3h 55m
    Nonstop
    9:50 amSAN

    Round-trip total · 1 adult · Taxes included

  9. Tue, Dec 8 – Sat, Dec 12

    American Airlines
    3:13 pmSAN
    6h 21m
    DFW · 1h 15m
    11:34 pmSTL
    American Airlines
    2:23 pmSTL
    6h 1m
    PHX · 1h 14m
    6:24 pmSAN

    Round-trip total · 1 adult · Taxes included

  10. Tue, Dec 8 – Sat, Dec 12

    Southwest Airlines
    11:55 amSAN
    3h 30m
    Nonstop
    5:25 pmSTL
    Southwest Airlines
    7:55 amSTL
    3h 55m
    Nonstop
    9:50 amSAN

    Round-trip total · 1 adult · Taxes included

  11. Tue, Dec 8 – Mon, Dec 14

    American Airlines
    3:13 pmSAN
    6h 21m
    DFW · 1h 15m
    11:34 pmSTL
    American Airlines
    2:23 pmSTL
    6h 1m
    PHX · 1h 14m
    6:24 pmSAN

    Round-trip total · 1 adult · Taxes included

  12. Tue, Dec 8 – Mon, Dec 14

    Southwest Airlines
    11:55 amSAN
    3h 30m
    Nonstop
    5:25 pmSTL
    Southwest Airlines
    8:25 amSTL
    3h 55m
    Nonstop
    10:20 amSAN

    Round-trip total · 1 adult · Taxes included

  13. Tue, Dec 8 – Tue, Dec 15

    American Airlines
    3:13 pmSAN
    6h 21m
    DFW · 1h 15m
    11:34 pmSTL
    American Airlines
    2:23 pmSTL
    6h 1m
    PHX · 1h 14m
    6:24 pmSAN

    Round-trip total · 1 adult · Taxes included

  14. Tue, Dec 8 – Tue, Dec 15

    Southwest Airlines
    11:55 amSAN
    3h 30m
    Nonstop
    5:25 pmSTL
    Southwest Airlines
    8:25 amSTL
    3h 55m
    Nonstop
    10:20 amSAN

    Round-trip total · 1 adult · Taxes included

  15. Tue, Dec 8 – Wed, Dec 16

    American Airlines
    3:13 pmSAN
    6h 21m
    DFW · 1h 15m
    11:34 pmSTL
    American Airlines
    2:23 pmSTL
    6h 1m
    PHX · 1h 14m
    6:24 pmSAN

    Round-trip total · 1 adult · Taxes included

  16. Tue, Dec 8 – Wed, Dec 16

    Southwest Airlines
    11:55 amSAN
    3h 30m
    Nonstop
    5:25 pmSTL
    Southwest Airlines
    8:25 amSTL
    3h 55m
    Nonstop
    10:20 amSAN

    Round-trip total · 1 adult · Taxes included

  17. Tue, Dec 8 – Fri, Dec 18

    United Airlines
    8:40 amSAN
    6h 17m
    DEN · 1h 49m
    4:57 pmSTL
    Frontier Airlines
    7:58 pmSTL
    6h
    DEN · 1h
    11:58 pmSAN

    Round-trip total · 1 adult · Taxes included

  18. Tue, Dec 8 – Fri, Dec 18

    Southwest Airlines
    11:55 amSAN
    3h 30m
    Nonstop
    5:25 pmSTL
    Southwest Airlines
    7:55 amSTL
    3h 55m
    Nonstop
    9:50 amSAN

    Round-trip total · 1 adult · Taxes included

  19. Tue, Dec 8 – Sat, Dec 19

    American Airlines
    3:13 pmSAN
    6h 21m
    DFW · 1h 15m
    11:34 pmSTL
    American Airlines
    2:23 pmSTL
    6h 1m
    PHX · 1h 14m
    6:24 pmSAN

    Round-trip total · 1 adult · Taxes included

  20. Tue, Dec 8 – Sat, Dec 19

    Southwest Airlines
    11:55 amSAN
    3h 30m
    Nonstop
    5:25 pmSTL
    Southwest Airlines
    7:55 amSTL
    3h 55m
    Nonstop
    9:50 amSAN

    Round-trip total · 1 adult · Taxes included

  21. Tue, Dec 8 – Sun, Dec 20

    United Airlines
    8:40 amSAN
    6h 17m
    DEN · 1h 49m
    4:57 pmSTL
    Southwest Airlines
    8:00 amSTL
    6h 30m
    LAS · 1h 40m
    12:30 pmSAN

    Round-trip total · 1 adult · Taxes included

  22. Tue, Dec 8 – Sun, Dec 20

    Southwest Airlines
    11:55 amSAN
    3h 30m
    Nonstop
    5:25 pmSTL
    Southwest Airlines
    8:00 amSTL
    6h 30m
    LAS · 1h 40m
    12:30 pmSAN

    Round-trip total · 1 adult · Taxes included

  23. Tue, Dec 8 – Tue, Dec 22

    American Airlines
    3:13 pmSAN
    6h 21m
    DFW · 1h 15m
    11:34 pmSTL
    American Airlines
    2:23 pmSTL
    6h 1m
    PHX · 1h 14m
    6:24 pmSAN

    Round-trip total · 1 adult · Taxes included

  24. Tue, Dec 8 – Tue, Dec 22

    Southwest Airlines
    11:55 amSAN
    3h 30m
    Nonstop
    5:25 pmSTL
    Southwest Airlines
    8:25 amSTL
    3h 55m
    Nonstop
    10:20 amSAN

    Round-trip total · 1 adult · Taxes included

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1 of 24

Make this trip yours

SAN ⇄ STL

Economy

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Explore this route

All dates for this routeDec 7, 2026 · Return optionsDec 9, 2026 · Return optionsHotels in St. Louis 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)
2026-12-08 · one waySouthwest AirlinesWN4711Axel-exclusive $195.002026-10-29T01:10:51Z
2026-12-08 · one wayAmerican AirlinesAA2438 + AA2289Axel-exclusive $185.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-09Southwest AirlinesWN4711 / WN1733Axel-exclusive $370.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-09American AirlinesAA2438 + AA2289 / AA2303 + AA2016Axel-exclusive $350.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-10Southwest AirlinesWN4711 / WN4452Axel-exclusive $370.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-10American AirlinesAA2438 + AA2289 / AA2303 + AA2016Axel-exclusive $350.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-11Southwest AirlinesWN4711 / WN4452Axel-exclusive $370.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-11United Airlines / Frontier AirlinesUA2476 + UA1639 / F94567 + F92711Axel-exclusive $285.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-12Southwest AirlinesWN4711 / WN4452Axel-exclusive $370.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-12American AirlinesAA2438 + AA2289 / AA2303 + AA2016Axel-exclusive $350.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-13United Airlines / Southwest AirlinesUA2476 + UA1639 / WN4249 + WN352Axel-exclusive $345.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-13Southwest AirlinesWN4711 / WN4249 + WN352Axel-exclusive $350.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-14Southwest AirlinesWN4711 / WN1733Axel-exclusive $370.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-14American AirlinesAA2438 + AA2289 / AA2303 + AA2016Axel-exclusive $350.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-15Southwest AirlinesWN4711 / WN1733Axel-exclusive $370.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-15American AirlinesAA2438 + AA2289 / AA2303 + AA2016Axel-exclusive $350.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-16Southwest AirlinesWN4711 / WN1733Axel-exclusive $370.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-16American AirlinesAA2438 + AA2289 / AA2303 + AA2016Axel-exclusive $350.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-17Southwest AirlinesWN4711 / WN4452Axel-exclusive $370.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-17American AirlinesAA2438 + AA2289 / AA2303 + AA2016Axel-exclusive $350.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-18Southwest AirlinesWN4711 / WN4452Axel-exclusive $444.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-18United Airlines / Frontier AirlinesUA2476 + UA1639 / F94567 + F92711Axel-exclusive $327.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-19Southwest AirlinesWN4711 / WN4452Axel-exclusive $444.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-19American AirlinesAA2438 + AA2289 / AA2303 + AA2016Axel-exclusive $420.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-20United Airlines / Southwest AirlinesUA2476 + UA1639 / WN4249 + WN352Axel-exclusive $411.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-20Southwest AirlinesWN4711 / WN4249 + WN352Axel-exclusive $416.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-21Southwest AirlinesWN4711 / WN1733Axel-exclusive $444.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-21American AirlinesAA2438 + AA2289 / AA2303 + AA2016Axel-exclusive $420.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-22Southwest AirlinesWN4711 / WN1733Axel-exclusive $444.002026-10-29T01:10:51Z
2026-12-08 → 2026-12-22American AirlinesAA2438 + AA2289 / AA2303 + AA2016Axel-exclusive $420.002026-10-29T01:10:51Z

Route overview: San Diego to Saint Louis (STL) flight deals

2026-12-08 · one way · Axel-exclusive $185.00

  • American Airlines AA2438 / AA2289: SAN 2026-12-08 15:13:00 → STL 2026-12-08 23:34:00; 1 stop(s) via DFW; 381 minutes. Local airport times.
    • AA2438: SAN 2026-12-08 15:13:00 → DFW 2026-12-08 20:30:00; layover at DFW: 75 minutes.
    • AA2289: DFW 2026-12-08 21:45:00 → STL 2026-12-08 23:34:00.

2026-12-08 · one way · Axel-exclusive $195.00

  • Southwest Airlines WN4711: SAN 2026-12-08 11:55:00 → STL 2026-12-08 17:25:00; nonstop; 210 minutes. Local airport times.

2026-12-08 → 2026-12-09 · Axel-exclusive $350.00

  • American Airlines AA2438 / AA2289: SAN 2026-12-08 15:13:00 → STL 2026-12-08 23:34:00; 1 stop(s) via DFW; 381 minutes. Local airport times.
    • AA2438: SAN 2026-12-08 15:13:00 → DFW 2026-12-08 20:30:00; layover at DFW: 75 minutes.
    • AA2289: DFW 2026-12-08 21:45:00 → STL 2026-12-08 23:34:00.
  • American Airlines AA2303 / AA2016: STL 2026-12-09 14:23:00 → SAN 2026-12-09 18:24:00; 1 stop(s) via PHX; 361 minutes. Local airport times.
    • AA2303: STL 2026-12-09 14:23:00 → PHX 2026-12-09 16:51:00; layover at PHX: 74 minutes.
    • AA2016: PHX 2026-12-09 18:05:00 → SAN 2026-12-09 18:24:00.

2026-12-08 → 2026-12-09 · Axel-exclusive $370.00

  • Southwest Airlines WN4711: SAN 2026-12-08 11:55:00 → STL 2026-12-08 17:25:00; nonstop; 210 minutes. Local airport times.
  • Southwest Airlines WN1733: STL 2026-12-09 08:25:00 → SAN 2026-12-09 10:20:00; nonstop; 235 minutes. Local airport times.

2026-12-08 → 2026-12-10 · Axel-exclusive $350.00

  • American Airlines AA2438 / AA2289: SAN 2026-12-08 15:13:00 → STL 2026-12-08 23:34:00; 1 stop(s) via DFW; 381 minutes. Local airport times.
    • AA2438: SAN 2026-12-08 15:13:00 → DFW 2026-12-08 20:30:00; layover at DFW: 75 minutes.
    • AA2289: DFW 2026-12-08 21:45:00 → STL 2026-12-08 23:34:00.
  • American Airlines AA2303 / AA2016: STL 2026-12-10 14:23:00 → SAN 2026-12-10 18:24:00; 1 stop(s) via PHX; 361 minutes. Local airport times.
    • AA2303: STL 2026-12-10 14:23:00 → PHX 2026-12-10 16:51:00; layover at PHX: 74 minutes.
    • AA2016: PHX 2026-12-10 18:05:00 → SAN 2026-12-10 18:24:00.

2026-12-08 → 2026-12-10 · Axel-exclusive $370.00

  • Southwest Airlines WN4711: SAN 2026-12-08 11:55:00 → STL 2026-12-08 17:25:00; nonstop; 210 minutes. Local airport times.
  • Southwest Airlines WN4452: STL 2026-12-10 07:55:00 → SAN 2026-12-10 09:50:00; nonstop; 235 minutes. Local airport times.

2026-12-08 → 2026-12-11 · Axel-exclusive $285.00

  • United Airlines UA2476 / UA1639: SAN 2026-12-08 08:40:00 → STL 2026-12-08 16:57:00; 1 stop(s) via DEN; 377 minutes. Local airport times.
    • UA2476: SAN 2026-12-08 08:40:00 → DEN 2026-12-08 12:06:00; layover at DEN: 109 minutes.
    • UA1639: DEN 2026-12-08 13:55:00 → STL 2026-12-08 16:57:00.
  • Frontier Airlines F94567 / F92711: STL 2026-12-11 19:58:00 → SAN 2026-12-11 23:58:00; 1 stop(s) via DEN; 360 minutes. Local airport times.
    • F94567: STL 2026-12-11 19:58:00 → DEN 2026-12-11 21:29:00; layover at DEN: 60 minutes.
    • F92711: DEN 2026-12-11 22:29:00 → SAN 2026-12-11 23:58:00.

2026-12-08 → 2026-12-11 · Axel-exclusive $370.00

  • Southwest Airlines WN4711: SAN 2026-12-08 11:55:00 → STL 2026-12-08 17:25:00; nonstop; 210 minutes. Local airport times.
  • Southwest Airlines WN4452: STL 2026-12-11 07:55:00 → SAN 2026-12-11 09:50:00; nonstop; 235 minutes. Local airport times.

2026-12-08 → 2026-12-12 · Axel-exclusive $350.00

  • American Airlines AA2438 / AA2289: SAN 2026-12-08 15:13:00 → STL 2026-12-08 23:34:00; 1 stop(s) via DFW; 381 minutes. Local airport times.
    • AA2438: SAN 2026-12-08 15:13:00 → DFW 2026-12-08 20:30:00; layover at DFW: 75 minutes.
    • AA2289: DFW 2026-12-08 21:45:00 → STL 2026-12-08 23:34:00.
  • American Airlines AA2303 / AA2016: STL 2026-12-12 14:23:00 → SAN 2026-12-12 18:24:00; 1 stop(s) via PHX; 361 minutes. Local airport times.
    • AA2303: STL 2026-12-12 14:23:00 → PHX 2026-12-12 16:51:00; layover at PHX: 74 minutes.
    • AA2016: PHX 2026-12-12 18:05:00 → SAN 2026-12-12 18:24:00.

2026-12-08 → 2026-12-12 · Axel-exclusive $370.00

  • Southwest Airlines WN4711: SAN 2026-12-08 11:55:00 → STL 2026-12-08 17:25:00; nonstop; 210 minutes. Local airport times.
  • Southwest Airlines WN4452: STL 2026-12-12 07:55:00 → SAN 2026-12-12 09:50:00; nonstop; 235 minutes. Local airport times.

2026-12-08 → 2026-12-14 · Axel-exclusive $350.00

  • American Airlines AA2438 / AA2289: SAN 2026-12-08 15:13:00 → STL 2026-12-08 23:34:00; 1 stop(s) via DFW; 381 minutes. Local airport times.
    • AA2438: SAN 2026-12-08 15:13:00 → DFW 2026-12-08 20:30:00; layover at DFW: 75 minutes.
    • AA2289: DFW 2026-12-08 21:45:00 → STL 2026-12-08 23:34:00.
  • American Airlines AA2303 / AA2016: STL 2026-12-14 14:23:00 → SAN 2026-12-14 18:24:00; 1 stop(s) via PHX; 361 minutes. Local airport times.
    • AA2303: STL 2026-12-14 14:23:00 → PHX 2026-12-14 16:51:00; layover at PHX: 74 minutes.
    • AA2016: PHX 2026-12-14 18:05:00 → SAN 2026-12-14 18:24:00.

2026-12-08 → 2026-12-14 · Axel-exclusive $370.00

  • Southwest Airlines WN4711: SAN 2026-12-08 11:55:00 → STL 2026-12-08 17:25:00; nonstop; 210 minutes. Local airport times.
  • Southwest Airlines WN1733: STL 2026-12-14 08:25:00 → SAN 2026-12-14 10:20:00; nonstop; 235 minutes. Local airport times.

2026-12-08 → 2026-12-15 · Axel-exclusive $350.00

  • American Airlines AA2438 / AA2289: SAN 2026-12-08 15:13:00 → STL 2026-12-08 23:34:00; 1 stop(s) via DFW; 381 minutes. Local airport times.
    • AA2438: SAN 2026-12-08 15:13:00 → DFW 2026-12-08 20:30:00; layover at DFW: 75 minutes.
    • AA2289: DFW 2026-12-08 21:45:00 → STL 2026-12-08 23:34:00.
  • American Airlines AA2303 / AA2016: STL 2026-12-15 14:23:00 → SAN 2026-12-15 18:24:00; 1 stop(s) via PHX; 361 minutes. Local airport times.
    • AA2303: STL 2026-12-15 14:23:00 → PHX 2026-12-15 16:51:00; layover at PHX: 74 minutes.
    • AA2016: PHX 2026-12-15 18:05:00 → SAN 2026-12-15 18:24:00.

2026-12-08 → 2026-12-15 · Axel-exclusive $370.00

  • Southwest Airlines WN4711: SAN 2026-12-08 11:55:00 → STL 2026-12-08 17:25:00; nonstop; 210 minutes. Local airport times.
  • Southwest Airlines WN1733: STL 2026-12-15 08:25:00 → SAN 2026-12-15 10:20:00; nonstop; 235 minutes. Local airport times.

2026-12-08 → 2026-12-16 · Axel-exclusive $350.00

  • American Airlines AA2438 / AA2289: SAN 2026-12-08 15:13:00 → STL 2026-12-08 23:34:00; 1 stop(s) via DFW; 381 minutes. Local airport times.
    • AA2438: SAN 2026-12-08 15:13:00 → DFW 2026-12-08 20:30:00; layover at DFW: 75 minutes.
    • AA2289: DFW 2026-12-08 21:45:00 → STL 2026-12-08 23:34:00.
  • American Airlines AA2303 / AA2016: STL 2026-12-16 14:23:00 → SAN 2026-12-16 18:24:00; 1 stop(s) via PHX; 361 minutes. Local airport times.
    • AA2303: STL 2026-12-16 14:23:00 → PHX 2026-12-16 16:51:00; layover at PHX: 74 minutes.
    • AA2016: PHX 2026-12-16 18:05:00 → SAN 2026-12-16 18:24:00.

2026-12-08 → 2026-12-16 · Axel-exclusive $370.00

  • Southwest Airlines WN4711: SAN 2026-12-08 11:55:00 → STL 2026-12-08 17:25:00; nonstop; 210 minutes. Local airport times.
  • Southwest Airlines WN1733: STL 2026-12-16 08:25:00 → SAN 2026-12-16 10:20:00; nonstop; 235 minutes. Local airport times.

2026-12-08 → 2026-12-18 · Axel-exclusive $327.00

  • United Airlines UA2476 / UA1639: SAN 2026-12-08 08:40:00 → STL 2026-12-08 16:57:00; 1 stop(s) via DEN; 377 minutes. Local airport times.
    • UA2476: SAN 2026-12-08 08:40:00 → DEN 2026-12-08 12:06:00; layover at DEN: 109 minutes.
    • UA1639: DEN 2026-12-08 13:55:00 → STL 2026-12-08 16:57:00.
  • Frontier Airlines F94567 / F92711: STL 2026-12-18 19:58:00 → SAN 2026-12-18 23:58:00; 1 stop(s) via DEN; 360 minutes. Local airport times.
    • F94567: STL 2026-12-18 19:58:00 → DEN 2026-12-18 21:29:00; layover at DEN: 60 minutes.
    • F92711: DEN 2026-12-18 22:29:00 → SAN 2026-12-18 23:58:00.

2026-12-08 → 2026-12-18 · Axel-exclusive $444.00

  • Southwest Airlines WN4711: SAN 2026-12-08 11:55:00 → STL 2026-12-08 17:25:00; nonstop; 210 minutes. Local airport times.
  • Southwest Airlines WN4452: STL 2026-12-18 07:55:00 → SAN 2026-12-18 09:50:00; nonstop; 235 minutes. Local airport times.

2026-12-08 → 2026-12-19 · Axel-exclusive $420.00

  • American Airlines AA2438 / AA2289: SAN 2026-12-08 15:13:00 → STL 2026-12-08 23:34:00; 1 stop(s) via DFW; 381 minutes. Local airport times.
    • AA2438: SAN 2026-12-08 15:13:00 → DFW 2026-12-08 20:30:00; layover at DFW: 75 minutes.
    • AA2289: DFW 2026-12-08 21:45:00 → STL 2026-12-08 23:34:00.
  • American Airlines AA2303 / AA2016: STL 2026-12-19 14:23:00 → SAN 2026-12-19 18:24:00; 1 stop(s) via PHX; 361 minutes. Local airport times.
    • AA2303: STL 2026-12-19 14:23:00 → PHX 2026-12-19 16:51:00; layover at PHX: 74 minutes.
    • AA2016: PHX 2026-12-19 18:05:00 → SAN 2026-12-19 18:24:00.

2026-12-08 → 2026-12-19 · Axel-exclusive $444.00

  • Southwest Airlines WN4711: SAN 2026-12-08 11:55:00 → STL 2026-12-08 17:25:00; nonstop; 210 minutes. Local airport times.
  • Southwest Airlines WN4452: STL 2026-12-19 07:55:00 → SAN 2026-12-19 09:50:00; nonstop; 235 minutes. Local airport times.

2026-12-08 → 2026-12-20 · Axel-exclusive $411.00

  • United Airlines UA2476 / UA1639: SAN 2026-12-08 08:40:00 → STL 2026-12-08 16:57:00; 1 stop(s) via DEN; 377 minutes. Local airport times.
    • UA2476: SAN 2026-12-08 08:40:00 → DEN 2026-12-08 12:06:00; layover at DEN: 109 minutes.
    • UA1639: DEN 2026-12-08 13:55:00 → STL 2026-12-08 16:57:00.
  • Southwest Airlines WN4249 / WN352: STL 2026-12-20 08:00:00 → SAN 2026-12-20 12:30:00; 1 stop(s) via LAS; 390 minutes. Local airport times.
    • WN4249: STL 2026-12-20 08:00:00 → LAS 2026-12-20 09:30:00; layover at LAS: 100 minutes.
    • WN352: LAS 2026-12-20 11:10:00 → SAN 2026-12-20 12:30:00.

2026-12-08 → 2026-12-20 · Axel-exclusive $416.00

  • Southwest Airlines WN4711: SAN 2026-12-08 11:55:00 → STL 2026-12-08 17:25:00; nonstop; 210 minutes. Local airport times.
  • Southwest Airlines WN4249 / WN352: STL 2026-12-20 08:00:00 → SAN 2026-12-20 12:30:00; 1 stop(s) via LAS; 390 minutes. Local airport times.
    • WN4249: STL 2026-12-20 08:00:00 → LAS 2026-12-20 09:30:00; layover at LAS: 100 minutes.
    • WN352: LAS 2026-12-20 11:10:00 → SAN 2026-12-20 12:30:00.

2026-12-08 → 2026-12-22 · Axel-exclusive $420.00

  • American Airlines AA2438 / AA2289: SAN 2026-12-08 15:13:00 → STL 2026-12-08 23:34:00; 1 stop(s) via DFW; 381 minutes. Local airport times.
    • AA2438: SAN 2026-12-08 15:13:00 → DFW 2026-12-08 20:30:00; layover at DFW: 75 minutes.
    • AA2289: DFW 2026-12-08 21:45:00 → STL 2026-12-08 23:34:00.
  • American Airlines AA2303 / AA2016: STL 2026-12-22 14:23:00 → SAN 2026-12-22 18:24:00; 1 stop(s) via PHX; 361 minutes. Local airport times.
    • AA2303: STL 2026-12-22 14:23:00 → PHX 2026-12-22 16:51:00; layover at PHX: 74 minutes.
    • AA2016: PHX 2026-12-22 18:05:00 → SAN 2026-12-22 18:24:00.

2026-12-08 → 2026-12-22 · Axel-exclusive $444.00

  • Southwest Airlines WN4711: SAN 2026-12-08 11:55:00 → STL 2026-12-08 17:25:00; nonstop; 210 minutes. Local airport times.
  • Southwest Airlines WN1733: STL 2026-12-22 08:25:00 → SAN 2026-12-22 10:20:00; nonstop; 235 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: San Diego (SAN) to Saint Louis (STL) · Dec 8, 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 Diego to Saint Louis (STL) 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.