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Route overview: Saint Louis to San Antonio (SAT) flight deals

Saint Louis → San Antonio

Dec 20, 2026 · choose your return date

STL → SAT1 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 20, 2026 · One waySouthwest AirlinesNonstop$218.75 Dec 20, 2026 · One wayAmerican AirlinesUp to 1 stop each way$231.25 Dec 20, 2026 – Dec 21, 2026 · 1 nightSouthwest AirlinesNonstop$425.00 Dec 20, 2026 – Dec 21, 2026 · 1 nightAmerican AirlinesUp to 1 stop each way$437.50 Dec 20, 2026 – Dec 22, 2026 · 2 nightsSouthwest AirlinesNonstop$425.00 Dec 20, 2026 – Dec 22, 2026 · 2 nightsAmerican AirlinesUp to 1 stop each way$437.50 Dec 20, 2026 – Dec 23, 2026 · 3 nightsSouthwest AirlinesNonstop$425.00 Dec 20, 2026 – Dec 23, 2026 · 3 nightsAmerican AirlinesUp to 1 stop each way$437.50 Dec 20, 2026 – Dec 24, 2026 · 4 nightsSouthwest AirlinesNonstop$425.00 Dec 20, 2026 – Dec 24, 2026 · 4 nightsAmerican AirlinesUp to 1 stop each way$437.50 Dec 20, 2026 – Dec 25, 2026 · 5 nightsSouthwest AirlinesNonstop$425.00 Dec 20, 2026 – Dec 25, 2026 · 5 nightsAmerican AirlinesUp to 1 stop each way$437.50 Dec 20, 2026 – Dec 26, 2026 · 6 nightsSouthwest AirlinesNonstop$425.00 Dec 20, 2026 – Dec 26, 2026 · 6 nightsAmerican AirlinesUp to 1 stop each way$437.50 Dec 20, 2026 – Dec 27, 2026 · 7 nightsSouthwest AirlinesNonstop$425.00 Dec 20, 2026 – Dec 27, 2026 · 7 nightsAmerican AirlinesUp to 1 stop each way$437.50 Dec 20, 2026 – Dec 28, 2026 · 8 nightsSouthwest AirlinesNonstop$416.50 Dec 20, 2026 – Dec 28, 2026 · 8 nightsAmerican AirlinesUp to 1 stop each way$428.75 Dec 20, 2026 – Dec 29, 2026 · 9 nightsSouthwest AirlinesNonstop$416.50 Dec 20, 2026 – Dec 29, 2026 · 9 nightsAmerican AirlinesUp to 1 stop each way$428.75 Dec 20, 2026 – Dec 30, 2026 · 10 nightsSouthwest AirlinesNonstop$416.50 Dec 20, 2026 – Dec 30, 2026 · 10 nightsAmerican AirlinesUp to 1 stop each way$428.75 Dec 20, 2026 – Dec 31, 2026 · 11 nightsSouthwest AirlinesNonstop$416.50 Dec 20, 2026 – Dec 31, 2026 · 11 nightsAmerican AirlinesUp to 1 stop each way$428.75 Dec 20, 2026 – Jan 1, 2027 · 12 nightsSouthwest AirlinesNonstop$406.30 Dec 20, 2026 – Jan 1, 2027 · 12 nightsAmerican AirlinesUp to 1 stop each way$418.25 Dec 20, 2026 – Jan 2, 2027 · 13 nightsSouthwest AirlinesNonstop$406.30 Dec 20, 2026 – Jan 2, 2027 · 13 nightsAmerican AirlinesUp to 1 stop each way$418.25 Dec 20, 2026 – Jan 3, 2027 · 14 nightsSouthwest AirlinesNonstop$406.30 Dec 20, 2026 – Jan 3, 2027 · 14 nightsAmerican AirlinesUp to 1 stop each way$418.25

Flights for your trip

  1. Sun, Dec 20 · One way

    Southwest Airlines
    8:20 amSTL
    2h 15m
    Nonstop
    10:35 amSAT

    One-way total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  2. Sun, Dec 20 · One way

    American Airlines
    11:37 amSTL
    6h 29m
    ORD · 1h 51m
    6:06 pmSAT

    One-way total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  3. Sun, Dec 20 – Mon, Dec 21

    Southwest Airlines
    8:20 amSTL
    2h 15m
    Nonstop
    10:35 amSAT
    Southwest Airlines
    3:20 pmSAT
    2h
    Nonstop
    5:20 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  4. Sun, Dec 20 – Mon, Dec 21

    American Airlines
    11:37 amSTL
    6h 29m
    ORD · 1h 51m
    6:06 pmSAT
    American Airlines
    8:00 amSAT
    4h 26m
    DFW · 1h 10m
    12:26 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  5. Sun, Dec 20 – Tue, Dec 22

    Southwest Airlines
    8:20 amSTL
    2h 15m
    Nonstop
    10:35 amSAT
    Southwest Airlines
    3:20 pmSAT
    2h
    Nonstop
    5:20 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  6. Sun, Dec 20 – Tue, Dec 22

    American Airlines
    11:37 amSTL
    6h 29m
    ORD · 1h 51m
    6:06 pmSAT
    American Airlines
    8:00 amSAT
    4h 26m
    DFW · 1h 10m
    12:26 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  7. Sun, Dec 20 – Wed, Dec 23

    Southwest Airlines
    8:20 amSTL
    2h 15m
    Nonstop
    10:35 amSAT
    Southwest Airlines
    7:25 amSAT
    2h 10m
    Nonstop
    9:35 amSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  8. Sun, Dec 20 – Wed, Dec 23

    American Airlines
    11:37 amSTL
    6h 29m
    ORD · 1h 51m
    6:06 pmSAT
    American Airlines
    8:00 amSAT
    4h 26m
    DFW · 1h 10m
    12:26 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  9. Sun, Dec 20 – Thu, Dec 24

    Southwest Airlines
    8:20 amSTL
    2h 15m
    Nonstop
    10:35 amSAT
    Southwest Airlines
    7:25 amSAT
    2h 10m
    Nonstop
    9:35 amSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  10. Sun, Dec 20 – Thu, Dec 24

    American Airlines
    11:37 amSTL
    6h 29m
    ORD · 1h 51m
    6:06 pmSAT
    American Airlines
    8:00 amSAT
    4h 26m
    DFW · 1h 10m
    12:26 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  11. Sun, Dec 20 – Sat, Dec 26

    Southwest Airlines
    8:20 amSTL
    2h 15m
    Nonstop
    10:35 amSAT
    Southwest Airlines
    5:05 pmSAT
    2h 5m
    Nonstop
    7:10 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  12. Sun, Dec 20 – Sat, Dec 26

    American Airlines
    11:37 amSTL
    6h 29m
    ORD · 1h 51m
    6:06 pmSAT
    American Airlines
    8:00 amSAT
    4h 26m
    DFW · 1h 10m
    12:26 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  13. Sun, Dec 20 – Sun, Dec 27

    Southwest Airlines
    8:20 amSTL
    2h 15m
    Nonstop
    10:35 amSAT
    Southwest Airlines
    7:30 amSAT
    2h 5m
    Nonstop
    9:35 amSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  14. Sun, Dec 20 – Sun, Dec 27

    American Airlines
    11:37 amSTL
    6h 29m
    ORD · 1h 51m
    6:06 pmSAT
    American Airlines
    8:00 amSAT
    4h 26m
    DFW · 1h 10m
    12:26 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  15. Sun, Dec 20 – Mon, Dec 28

    Southwest Airlines
    8:20 amSTL
    2h 15m
    Nonstop
    10:35 amSAT
    Southwest Airlines
    3:20 pmSAT
    2h
    Nonstop
    5:20 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  16. Sun, Dec 20 – Mon, Dec 28

    American Airlines
    11:37 amSTL
    6h 29m
    ORD · 1h 51m
    6:06 pmSAT
    American Airlines
    8:00 amSAT
    4h 26m
    DFW · 1h 10m
    12:26 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  17. Sun, Dec 20 – Wed, Dec 30

    Southwest Airlines
    8:20 amSTL
    2h 15m
    Nonstop
    10:35 amSAT
    Southwest Airlines
    7:25 amSAT
    2h 10m
    Nonstop
    9:35 amSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  18. Sun, Dec 20 – Wed, Dec 30

    American Airlines
    11:37 amSTL
    6h 29m
    ORD · 1h 51m
    6:06 pmSAT
    American Airlines
    8:00 amSAT
    4h 26m
    DFW · 1h 10m
    12:26 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  19. Sun, Dec 20 – Thu, Dec 31

    Southwest Airlines
    8:20 amSTL
    2h 15m
    Nonstop
    10:35 amSAT
    Southwest Airlines
    7:25 amSAT
    2h 10m
    Nonstop
    9:35 amSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  20. Sun, Dec 20 – Thu, Dec 31

    American Airlines
    11:37 amSTL
    6h 29m
    ORD · 1h 51m
    6:06 pmSAT
    American Airlines
    8:00 amSAT
    4h 26m
    DFW · 1h 10m
    12:26 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  21. Sun, Dec 20 – Fri, Jan 1

    Southwest Airlines
    8:20 amSTL
    2h 15m
    Nonstop
    10:35 amSAT
    Southwest Airlines
    3:20 pmSAT
    2h
    Nonstop
    5:20 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  22. Sun, Dec 20 – Fri, Jan 1

    American Airlines
    11:37 amSTL
    6h 29m
    ORD · 1h 51m
    6:06 pmSAT
    American Airlines
    8:00 amSAT
    4h 26m
    DFW · 1h 10m
    12:26 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  23. Sun, Dec 20 – Sun, Jan 3

    Southwest Airlines
    8:20 amSTL
    2h 15m
    Nonstop
    10:35 amSAT
    Southwest Airlines
    7:30 amSAT
    2h 5m
    Nonstop
    9:35 amSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  24. Sun, Dec 20 – Sun, Jan 3

    American Airlines
    11:37 amSTL
    6h 29m
    ORD · 1h 51m
    6:06 pmSAT
    American Airlines
    8:00 amSAT
    4h 26m
    DFW · 1h 10m
    12:26 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

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1 of 24

Make this trip yours

STL ⇄ SAT

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

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Explore this route

All dates for this routeDec 19, 2026 · Return optionsDec 21, 2026 · Return optionsHotels in San Antonio 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)
2026-12-20 · one waySouthwest AirlinesWN4198Axel-exclusive $218.752026-10-29T01:29:00Z
2026-12-20 · one wayAmerican AirlinesAA3198 + AA4551Axel-exclusive $231.252026-10-29T01:29:00Z
2026-12-20 → 2026-12-21Southwest AirlinesWN4198 / WN3801Axel-exclusive $425.002026-10-29T01:29:00Z
2026-12-20 → 2026-12-21American AirlinesAA3198 + AA4551 / AA2070 + AA5082Axel-exclusive $437.502026-10-29T01:29:00Z
2026-12-20 → 2026-12-22Southwest AirlinesWN4198 / WN3801Axel-exclusive $425.002026-10-29T01:29:00Z
2026-12-20 → 2026-12-22American AirlinesAA3198 + AA4551 / AA2070 + AA5082Axel-exclusive $437.502026-10-29T01:29:00Z
2026-12-20 → 2026-12-23Southwest AirlinesWN4198 / WN3800Axel-exclusive $425.002026-10-29T01:29:00Z
2026-12-20 → 2026-12-23American AirlinesAA3198 + AA4551 / AA2070 + AA5082Axel-exclusive $437.502026-10-29T01:29:00Z
2026-12-20 → 2026-12-24Southwest AirlinesWN4198 / WN3800Axel-exclusive $425.002026-10-29T01:29:00Z
2026-12-20 → 2026-12-24American AirlinesAA3198 + AA4551 / AA2070 + AA5082Axel-exclusive $437.502026-10-29T01:29:00Z
2026-12-20 → 2026-12-25Southwest AirlinesWN4198 / WN3801Axel-exclusive $425.002026-10-29T01:29:00Z
2026-12-20 → 2026-12-25American AirlinesAA3198 + AA4551 / AA2070 + AA5082Axel-exclusive $437.502026-10-29T01:29:00Z
2026-12-20 → 2026-12-26Southwest AirlinesWN4198 / WN3801Axel-exclusive $425.002026-10-29T01:29:00Z
2026-12-20 → 2026-12-26American AirlinesAA3198 + AA4551 / AA2070 + AA5082Axel-exclusive $437.502026-10-29T01:29:00Z
2026-12-20 → 2026-12-27Southwest AirlinesWN4198 / WN3800Axel-exclusive $425.002026-10-29T01:29:00Z
2026-12-20 → 2026-12-27American AirlinesAA3198 + AA4551 / AA2070 + AA5082Axel-exclusive $437.502026-10-29T01:29:00Z
2026-12-20 → 2026-12-28Southwest AirlinesWN4198 / WN3801Axel-exclusive $416.502026-10-29T01:29:00Z
2026-12-20 → 2026-12-28American AirlinesAA3198 + AA4551 / AA2070 + AA5082Axel-exclusive $428.752026-10-29T01:29:00Z
2026-12-20 → 2026-12-29Southwest AirlinesWN4198 / WN3801Axel-exclusive $416.502026-10-29T01:29:00Z
2026-12-20 → 2026-12-29American AirlinesAA3198 + AA4551 / AA2070 + AA5082Axel-exclusive $428.752026-10-29T01:29:00Z
2026-12-20 → 2026-12-30Southwest AirlinesWN4198 / WN3800Axel-exclusive $416.502026-10-29T01:29:00Z
2026-12-20 → 2026-12-30American AirlinesAA3198 + AA4551 / AA2070 + AA5082Axel-exclusive $428.752026-10-29T01:29:00Z
2026-12-20 → 2026-12-31Southwest AirlinesWN4198 / WN3800Axel-exclusive $416.502026-10-29T01:29:00Z
2026-12-20 → 2026-12-31American AirlinesAA3198 + AA4551 / AA2070 + AA5082Axel-exclusive $428.752026-10-29T01:29:00Z
2026-12-20 → 2027-01-01Southwest AirlinesWN4198 / WN3801Axel-exclusive $406.302026-10-29T01:29:00Z
2026-12-20 → 2027-01-01American AirlinesAA3198 + AA4551 / AA2070 + AA5082Axel-exclusive $418.252026-10-29T01:29:00Z
2026-12-20 → 2027-01-02Southwest AirlinesWN4198 / WN3801Axel-exclusive $406.302026-10-29T01:29:00Z
2026-12-20 → 2027-01-02American AirlinesAA3198 + AA4551 / AA2070 + AA5082Axel-exclusive $418.252026-10-29T01:29:00Z
2026-12-20 → 2027-01-03Southwest AirlinesWN4198 / WN3800Axel-exclusive $406.302026-10-29T01:29:00Z
2026-12-20 → 2027-01-03American AirlinesAA3198 + AA4551 / AA2070 + AA5082Axel-exclusive $418.252026-10-29T01:29:00Z

Route overview: Saint Louis to San Antonio (SAT) flight deals

2026-12-20 · one way · Axel-exclusive $218.75

  • Southwest Airlines WN4198: STL 2026-12-20 08:20:00 → SAT 2026-12-20 10:35:00; nonstop; 135 minutes. Local airport times.

2026-12-20 · one way · Axel-exclusive $231.25

  • American Airlines AA3198 / AA4551: STL 2026-12-20 11:37:00 → SAT 2026-12-20 18:06:00; 1 stop(s) via ORD; 389 minutes. Local airport times.
    • AA3198: STL 2026-12-20 11:37:00 → ORD 2026-12-20 12:59:00; layover at ORD: 111 minutes.
    • AA4551: ORD 2026-12-20 14:50:00 → SAT 2026-12-20 18:06:00.

2026-12-20 → 2026-12-21 · Axel-exclusive $425.00

  • Southwest Airlines WN4198: STL 2026-12-20 08:20:00 → SAT 2026-12-20 10:35:00; nonstop; 135 minutes. Local airport times.
  • Southwest Airlines WN3801: SAT 2026-12-21 15:20:00 → STL 2026-12-21 17:20:00; nonstop; 120 minutes. Local airport times.

2026-12-20 → 2026-12-21 · Axel-exclusive $437.50

  • American Airlines AA3198 / AA4551: STL 2026-12-20 11:37:00 → SAT 2026-12-20 18:06:00; 1 stop(s) via ORD; 389 minutes. Local airport times.
    • AA3198: STL 2026-12-20 11:37:00 → ORD 2026-12-20 12:59:00; layover at ORD: 111 minutes.
    • AA4551: ORD 2026-12-20 14:50:00 → SAT 2026-12-20 18:06:00.
  • American Airlines AA2070 / AA5082: SAT 2026-12-21 08:00:00 → STL 2026-12-21 12:26:00; 1 stop(s) via DFW; 266 minutes. Local airport times.
    • AA2070: SAT 2026-12-21 08:00:00 → DFW 2026-12-21 09:22:00; layover at DFW: 70 minutes.
    • AA5082: DFW 2026-12-21 10:32:00 → STL 2026-12-21 12:26:00.

2026-12-20 → 2026-12-22 · Axel-exclusive $425.00

  • Southwest Airlines WN4198: STL 2026-12-20 08:20:00 → SAT 2026-12-20 10:35:00; nonstop; 135 minutes. Local airport times.
  • Southwest Airlines WN3801: SAT 2026-12-22 15:20:00 → STL 2026-12-22 17:20:00; nonstop; 120 minutes. Local airport times.

2026-12-20 → 2026-12-22 · Axel-exclusive $437.50

  • American Airlines AA3198 / AA4551: STL 2026-12-20 11:37:00 → SAT 2026-12-20 18:06:00; 1 stop(s) via ORD; 389 minutes. Local airport times.
    • AA3198: STL 2026-12-20 11:37:00 → ORD 2026-12-20 12:59:00; layover at ORD: 111 minutes.
    • AA4551: ORD 2026-12-20 14:50:00 → SAT 2026-12-20 18:06:00.
  • American Airlines AA2070 / AA5082: SAT 2026-12-22 08:00:00 → STL 2026-12-22 12:26:00; 1 stop(s) via DFW; 266 minutes. Local airport times.
    • AA2070: SAT 2026-12-22 08:00:00 → DFW 2026-12-22 09:22:00; layover at DFW: 70 minutes.
    • AA5082: DFW 2026-12-22 10:32:00 → STL 2026-12-22 12:26:00.

2026-12-20 → 2026-12-23 · Axel-exclusive $425.00

  • Southwest Airlines WN4198: STL 2026-12-20 08:20:00 → SAT 2026-12-20 10:35:00; nonstop; 135 minutes. Local airport times.
  • Southwest Airlines WN3800: SAT 2026-12-23 07:25:00 → STL 2026-12-23 09:35:00; nonstop; 130 minutes. Local airport times.

2026-12-20 → 2026-12-23 · Axel-exclusive $437.50

  • American Airlines AA3198 / AA4551: STL 2026-12-20 11:37:00 → SAT 2026-12-20 18:06:00; 1 stop(s) via ORD; 389 minutes. Local airport times.
    • AA3198: STL 2026-12-20 11:37:00 → ORD 2026-12-20 12:59:00; layover at ORD: 111 minutes.
    • AA4551: ORD 2026-12-20 14:50:00 → SAT 2026-12-20 18:06:00.
  • American Airlines AA2070 / AA5082: SAT 2026-12-23 08:00:00 → STL 2026-12-23 12:26:00; 1 stop(s) via DFW; 266 minutes. Local airport times.
    • AA2070: SAT 2026-12-23 08:00:00 → DFW 2026-12-23 09:22:00; layover at DFW: 70 minutes.
    • AA5082: DFW 2026-12-23 10:32:00 → STL 2026-12-23 12:26:00.

2026-12-20 → 2026-12-24 · Axel-exclusive $425.00

  • Southwest Airlines WN4198: STL 2026-12-20 08:20:00 → SAT 2026-12-20 10:35:00; nonstop; 135 minutes. Local airport times.
  • Southwest Airlines WN3800: SAT 2026-12-24 07:25:00 → STL 2026-12-24 09:35:00; nonstop; 130 minutes. Local airport times.

2026-12-20 → 2026-12-24 · Axel-exclusive $437.50

  • American Airlines AA3198 / AA4551: STL 2026-12-20 11:37:00 → SAT 2026-12-20 18:06:00; 1 stop(s) via ORD; 389 minutes. Local airport times.
    • AA3198: STL 2026-12-20 11:37:00 → ORD 2026-12-20 12:59:00; layover at ORD: 111 minutes.
    • AA4551: ORD 2026-12-20 14:50:00 → SAT 2026-12-20 18:06:00.
  • American Airlines AA2070 / AA5082: SAT 2026-12-24 08:00:00 → STL 2026-12-24 12:26:00; 1 stop(s) via DFW; 266 minutes. Local airport times.
    • AA2070: SAT 2026-12-24 08:00:00 → DFW 2026-12-24 09:22:00; layover at DFW: 70 minutes.
    • AA5082: DFW 2026-12-24 10:32:00 → STL 2026-12-24 12:26:00.

2026-12-20 → 2026-12-26 · Axel-exclusive $425.00

  • Southwest Airlines WN4198: STL 2026-12-20 08:20:00 → SAT 2026-12-20 10:35:00; nonstop; 135 minutes. Local airport times.
  • Southwest Airlines WN3801: SAT 2026-12-26 17:05:00 → STL 2026-12-26 19:10:00; nonstop; 125 minutes. Local airport times.

2026-12-20 → 2026-12-26 · Axel-exclusive $437.50

  • American Airlines AA3198 / AA4551: STL 2026-12-20 11:37:00 → SAT 2026-12-20 18:06:00; 1 stop(s) via ORD; 389 minutes. Local airport times.
    • AA3198: STL 2026-12-20 11:37:00 → ORD 2026-12-20 12:59:00; layover at ORD: 111 minutes.
    • AA4551: ORD 2026-12-20 14:50:00 → SAT 2026-12-20 18:06:00.
  • American Airlines AA2070 / AA5082: SAT 2026-12-26 08:00:00 → STL 2026-12-26 12:26:00; 1 stop(s) via DFW; 266 minutes. Local airport times.
    • AA2070: SAT 2026-12-26 08:00:00 → DFW 2026-12-26 09:22:00; layover at DFW: 70 minutes.
    • AA5082: DFW 2026-12-26 10:32:00 → STL 2026-12-26 12:26:00.

2026-12-20 → 2026-12-27 · Axel-exclusive $425.00

  • Southwest Airlines WN4198: STL 2026-12-20 08:20:00 → SAT 2026-12-20 10:35:00; nonstop; 135 minutes. Local airport times.
  • Southwest Airlines WN3800: SAT 2026-12-27 07:30:00 → STL 2026-12-27 09:35:00; nonstop; 125 minutes. Local airport times.

2026-12-20 → 2026-12-27 · Axel-exclusive $437.50

  • American Airlines AA3198 / AA4551: STL 2026-12-20 11:37:00 → SAT 2026-12-20 18:06:00; 1 stop(s) via ORD; 389 minutes. Local airport times.
    • AA3198: STL 2026-12-20 11:37:00 → ORD 2026-12-20 12:59:00; layover at ORD: 111 minutes.
    • AA4551: ORD 2026-12-20 14:50:00 → SAT 2026-12-20 18:06:00.
  • American Airlines AA2070 / AA5082: SAT 2026-12-27 08:00:00 → STL 2026-12-27 12:26:00; 1 stop(s) via DFW; 266 minutes. Local airport times.
    • AA2070: SAT 2026-12-27 08:00:00 → DFW 2026-12-27 09:22:00; layover at DFW: 70 minutes.
    • AA5082: DFW 2026-12-27 10:32:00 → STL 2026-12-27 12:26:00.

2026-12-20 → 2026-12-28 · Axel-exclusive $416.50

  • Southwest Airlines WN4198: STL 2026-12-20 08:20:00 → SAT 2026-12-20 10:35:00; nonstop; 135 minutes. Local airport times.
  • Southwest Airlines WN3801: SAT 2026-12-28 15:20:00 → STL 2026-12-28 17:20:00; nonstop; 120 minutes. Local airport times.

2026-12-20 → 2026-12-28 · Axel-exclusive $428.75

  • American Airlines AA3198 / AA4551: STL 2026-12-20 11:37:00 → SAT 2026-12-20 18:06:00; 1 stop(s) via ORD; 389 minutes. Local airport times.
    • AA3198: STL 2026-12-20 11:37:00 → ORD 2026-12-20 12:59:00; layover at ORD: 111 minutes.
    • AA4551: ORD 2026-12-20 14:50:00 → SAT 2026-12-20 18:06:00.
  • American Airlines AA2070 / AA5082: SAT 2026-12-28 08:00:00 → STL 2026-12-28 12:26:00; 1 stop(s) via DFW; 266 minutes. Local airport times.
    • AA2070: SAT 2026-12-28 08:00:00 → DFW 2026-12-28 09:22:00; layover at DFW: 70 minutes.
    • AA5082: DFW 2026-12-28 10:32:00 → STL 2026-12-28 12:26:00.

2026-12-20 → 2026-12-30 · Axel-exclusive $416.50

  • Southwest Airlines WN4198: STL 2026-12-20 08:20:00 → SAT 2026-12-20 10:35:00; nonstop; 135 minutes. Local airport times.
  • Southwest Airlines WN3800: SAT 2026-12-30 07:25:00 → STL 2026-12-30 09:35:00; nonstop; 130 minutes. Local airport times.

2026-12-20 → 2026-12-30 · Axel-exclusive $428.75

  • American Airlines AA3198 / AA4551: STL 2026-12-20 11:37:00 → SAT 2026-12-20 18:06:00; 1 stop(s) via ORD; 389 minutes. Local airport times.
    • AA3198: STL 2026-12-20 11:37:00 → ORD 2026-12-20 12:59:00; layover at ORD: 111 minutes.
    • AA4551: ORD 2026-12-20 14:50:00 → SAT 2026-12-20 18:06:00.
  • American Airlines AA2070 / AA5082: SAT 2026-12-30 08:00:00 → STL 2026-12-30 12:26:00; 1 stop(s) via DFW; 266 minutes. Local airport times.
    • AA2070: SAT 2026-12-30 08:00:00 → DFW 2026-12-30 09:22:00; layover at DFW: 70 minutes.
    • AA5082: DFW 2026-12-30 10:32:00 → STL 2026-12-30 12:26:00.

2026-12-20 → 2026-12-31 · Axel-exclusive $416.50

  • Southwest Airlines WN4198: STL 2026-12-20 08:20:00 → SAT 2026-12-20 10:35:00; nonstop; 135 minutes. Local airport times.
  • Southwest Airlines WN3800: SAT 2026-12-31 07:25:00 → STL 2026-12-31 09:35:00; nonstop; 130 minutes. Local airport times.

2026-12-20 → 2026-12-31 · Axel-exclusive $428.75

  • American Airlines AA3198 / AA4551: STL 2026-12-20 11:37:00 → SAT 2026-12-20 18:06:00; 1 stop(s) via ORD; 389 minutes. Local airport times.
    • AA3198: STL 2026-12-20 11:37:00 → ORD 2026-12-20 12:59:00; layover at ORD: 111 minutes.
    • AA4551: ORD 2026-12-20 14:50:00 → SAT 2026-12-20 18:06:00.
  • American Airlines AA2070 / AA5082: SAT 2026-12-31 08:00:00 → STL 2026-12-31 12:26:00; 1 stop(s) via DFW; 266 minutes. Local airport times.
    • AA2070: SAT 2026-12-31 08:00:00 → DFW 2026-12-31 09:22:00; layover at DFW: 70 minutes.
    • AA5082: DFW 2026-12-31 10:32:00 → STL 2026-12-31 12:26:00.

2026-12-20 → 2027-01-01 · Axel-exclusive $406.30

  • Southwest Airlines WN4198: STL 2026-12-20 08:20:00 → SAT 2026-12-20 10:35:00; nonstop; 135 minutes. Local airport times.
  • Southwest Airlines WN3801: SAT 2027-01-01 15:20:00 → STL 2027-01-01 17:20:00; nonstop; 120 minutes. Local airport times.

2026-12-20 → 2027-01-01 · Axel-exclusive $418.25

  • American Airlines AA3198 / AA4551: STL 2026-12-20 11:37:00 → SAT 2026-12-20 18:06:00; 1 stop(s) via ORD; 389 minutes. Local airport times.
    • AA3198: STL 2026-12-20 11:37:00 → ORD 2026-12-20 12:59:00; layover at ORD: 111 minutes.
    • AA4551: ORD 2026-12-20 14:50:00 → SAT 2026-12-20 18:06:00.
  • American Airlines AA2070 / AA5082: SAT 2027-01-01 08:00:00 → STL 2027-01-01 12:26:00; 1 stop(s) via DFW; 266 minutes. Local airport times.
    • AA2070: SAT 2027-01-01 08:00:00 → DFW 2027-01-01 09:22:00; layover at DFW: 70 minutes.
    • AA5082: DFW 2027-01-01 10:32:00 → STL 2027-01-01 12:26:00.

2026-12-20 → 2027-01-03 · Axel-exclusive $406.30

  • Southwest Airlines WN4198: STL 2026-12-20 08:20:00 → SAT 2026-12-20 10:35:00; nonstop; 135 minutes. Local airport times.
  • Southwest Airlines WN3800: SAT 2027-01-03 07:30:00 → STL 2027-01-03 09:35:00; nonstop; 125 minutes. Local airport times.

2026-12-20 → 2027-01-03 · Axel-exclusive $418.25

  • American Airlines AA3198 / AA4551: STL 2026-12-20 11:37:00 → SAT 2026-12-20 18:06:00; 1 stop(s) via ORD; 389 minutes. Local airport times.
    • AA3198: STL 2026-12-20 11:37:00 → ORD 2026-12-20 12:59:00; layover at ORD: 111 minutes.
    • AA4551: ORD 2026-12-20 14:50:00 → SAT 2026-12-20 18:06:00.
  • American Airlines AA2070 / AA5082: SAT 2027-01-03 08:00:00 → STL 2027-01-03 12:26:00; 1 stop(s) via DFW; 266 minutes. Local airport times.
    • AA2070: SAT 2027-01-03 08:00:00 → DFW 2027-01-03 09:22:00; layover at DFW: 70 minutes.
    • AA5082: DFW 2027-01-03 10:32:00 → STL 2027-01-03 12:26:00.

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For AI assistants

  • This page: Saint Louis (STL) to San Antonio (SAT) · Dec 20, 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 Antonio (SAT) 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. Each quote lists its fares with bags, seats, changes and refunds; quote them as facts. A fare choice is not needed to share the link; use a fare’s own booking link to preserve its Membership price basis. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and say what is still to choose. 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.