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Route overview: Saint Louis to Phoenix (PHX) flight deals

Saint Louis → Phoenix

Dec 10, 2026 · choose your return date

STL → PHX1 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 10, 2026 · One wayFrontier AirlinesUp to 1 stop each way$105.00 Dec 10, 2026 · One wayAmerican AirlinesNonstop$185.00 Dec 10, 2026 – Dec 11, 2026 · 1 nightFrontier Airlines / Southwest AirlinesUp to 1 stop each way$262.50 Dec 10, 2026 – Dec 11, 2026 · 1 nightSouthwest AirlinesUp to 1 stop each way$315.00 Dec 10, 2026 – Dec 12, 2026 · 2 nightsFrontier Airlines / Southwest AirlinesUp to 1 stop each way$262.50 Dec 10, 2026 – Dec 12, 2026 · 2 nightsAmerican AirlinesNonstop$350.00 Dec 10, 2026 – Dec 13, 2026 · 3 nightsFrontier Airlines / American AirlinesUp to 1 stop each way$272.50 Dec 10, 2026 – Dec 13, 2026 · 3 nightsAmerican AirlinesNonstop$350.00 Dec 10, 2026 – Dec 14, 2026 · 4 nightsFrontier Airlines / American AirlinesUp to 1 stop each way$272.50 Dec 10, 2026 – Dec 14, 2026 · 4 nightsAmerican AirlinesNonstop$350.00 Dec 10, 2026 – Dec 15, 2026 · 5 nightsFrontier Airlines / Southwest AirlinesUp to 1 stop each way$262.50 Dec 10, 2026 – Dec 15, 2026 · 5 nightsAmerican AirlinesNonstop$350.00 Dec 10, 2026 – Dec 16, 2026 · 6 nightsFrontier Airlines / Southwest AirlinesUp to 1 stop each way$262.50 Dec 10, 2026 – Dec 16, 2026 · 6 nightsAmerican AirlinesNonstop$350.00 Dec 10, 2026 – Dec 17, 2026 · 7 nightsFrontier Airlines / Southwest AirlinesUp to 1 stop each way$262.50 Dec 10, 2026 – Dec 17, 2026 · 7 nightsSouthwest AirlinesUp to 1 stop each way$315.00 Dec 10, 2026 – Dec 18, 2026 · 8 nightsFrontier Airlines / Southwest AirlinesUp to 1 stop each way$262.50 Dec 10, 2026 – Dec 18, 2026 · 8 nightsSouthwest AirlinesUp to 1 stop each way$315.00 Dec 10, 2026 – Dec 19, 2026 · 9 nightsFrontier Airlines / Southwest AirlinesUp to 1 stop each way$312.00 Dec 10, 2026 – Dec 19, 2026 · 9 nightsAmerican AirlinesNonstop$402.50 Dec 10, 2026 – Dec 20, 2026 · 10 nightsFrontier Airlines / American AirlinesUp to 1 stop each way$325.00 Dec 10, 2026 – Dec 20, 2026 · 10 nightsAmerican AirlinesNonstop$402.50 Dec 10, 2026 – Dec 21, 2026 · 11 nightsFrontier Airlines / American AirlinesUp to 1 stop each way$325.00 Dec 10, 2026 – Dec 21, 2026 · 11 nightsAmerican AirlinesNonstop$402.50 Dec 10, 2026 – Dec 22, 2026 · 12 nightsFrontier Airlines / Southwest AirlinesUp to 1 stop each way$312.00 Dec 10, 2026 – Dec 22, 2026 · 12 nightsAmerican AirlinesNonstop$402.50 Dec 10, 2026 – Dec 23, 2026 · 13 nightsFrontier Airlines / Southwest AirlinesUp to 1 stop each way$312.00 Dec 10, 2026 – Dec 23, 2026 · 13 nightsAmerican AirlinesNonstop$402.50 Dec 10, 2026 – Dec 24, 2026 · 14 nightsFrontier Airlines / Southwest AirlinesUp to 1 stop each way$312.00 Dec 10, 2026 – Dec 24, 2026 · 14 nightsSouthwest AirlinesUp to 1 stop each way$364.50

Flights for your trip

  1. Thu, Dec 10 · One way

    Frontier Airlines
    7:58 pmSTL
    5h 51m
    DEN · 1h 7m
    12:49 am+1PHX

    One-way total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  2. Thu, Dec 10 · One way

    American Airlines
    2:23 pmSTL
    3h 28m
    Nonstop
    4:51 pmPHX

    One-way total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  3. Thu, Dec 10 – Fri, Dec 11

    Frontier Airlines
    7:58 pmSTL
    5h 51m
    DEN · 1h 7m
    12:49 am+1PHX
    Southwest Airlines
    5:45 amPHX
    2h 45m
    Nonstop
    9:30 amSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  4. Thu, Dec 10 – Fri, Dec 11

    Southwest Airlines
    2:45 pmSTL
    6h 25m
    AUS · 1h 45m
    8:10 pmPHX
    Southwest Airlines
    5:45 amPHX
    2h 45m
    Nonstop
    9:30 amSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  5. Thu, Dec 10 – Sat, Dec 12

    Frontier Airlines
    7:58 pmSTL
    5h 51m
    DEN · 1h 7m
    12:49 am+1PHX
    Southwest Airlines
    6:05 pmPHX
    2h 50m
    Nonstop
    9:55 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  6. Thu, Dec 10 – Sat, Dec 12

    American Airlines
    2:23 pmSTL
    3h 28m
    Nonstop
    4:51 pmPHX
    American Airlines
    7:56 pmPHX
    2h 56m
    Nonstop
    11:52 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  7. Thu, Dec 10 – Sun, Dec 13

    Frontier Airlines
    7:58 pmSTL
    5h 51m
    DEN · 1h 7m
    12:49 am+1PHX
    American Airlines
    9:30 amPHX
    3h 6m
    Nonstop
    1:36 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  8. Thu, Dec 10 – Sun, Dec 13

    American Airlines
    2:23 pmSTL
    3h 28m
    Nonstop
    4:51 pmPHX
    American Airlines
    9:30 amPHX
    3h 6m
    Nonstop
    1:36 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  9. Thu, Dec 10 – Mon, Dec 14

    Frontier Airlines
    7:58 pmSTL
    5h 51m
    DEN · 1h 7m
    12:49 am+1PHX
    American Airlines
    9:45 amPHX
    3h 6m
    Nonstop
    1:51 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  10. Thu, Dec 10 – Mon, Dec 14

    American Airlines
    2:23 pmSTL
    3h 28m
    Nonstop
    4:51 pmPHX
    American Airlines
    9:45 amPHX
    3h 6m
    Nonstop
    1:51 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  11. Thu, Dec 10 – Wed, Dec 16

    Frontier Airlines
    7:58 pmSTL
    5h 51m
    DEN · 1h 7m
    12:49 am+1PHX
    Southwest Airlines
    3:15 pmPHX
    2h 50m
    Nonstop
    7:05 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  12. Thu, Dec 10 – Wed, Dec 16

    American Airlines
    2:23 pmSTL
    3h 28m
    Nonstop
    4:51 pmPHX
    American Airlines
    9:37 amPHX
    3h 6m
    Nonstop
    1:43 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  13. Thu, Dec 10 – Thu, Dec 17

    Frontier Airlines
    7:58 pmSTL
    5h 51m
    DEN · 1h 7m
    12:49 am+1PHX
    Southwest Airlines
    8:50 amPHX
    2h 50m
    Nonstop
    12:40 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  14. Thu, Dec 10 – Thu, Dec 17

    Southwest Airlines
    2:45 pmSTL
    6h 25m
    AUS · 1h 45m
    8:10 pmPHX
    Southwest Airlines
    8:50 amPHX
    2h 50m
    Nonstop
    12:40 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  15. Thu, Dec 10 – Fri, Dec 18

    Frontier Airlines
    7:58 pmSTL
    5h 51m
    DEN · 1h 7m
    12:49 am+1PHX
    Southwest Airlines
    5:45 amPHX
    2h 45m
    Nonstop
    9:30 amSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  16. Thu, Dec 10 – Fri, Dec 18

    Southwest Airlines
    2:45 pmSTL
    6h 25m
    AUS · 1h 45m
    8:10 pmPHX
    Southwest Airlines
    5:45 amPHX
    2h 45m
    Nonstop
    9:30 amSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  17. Thu, Dec 10 – Sun, Dec 20

    Frontier Airlines
    7:58 pmSTL
    5h 51m
    DEN · 1h 7m
    12:49 am+1PHX
    American Airlines
    9:54 amPHX
    3h 5m
    Nonstop
    1:59 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  18. Thu, Dec 10 – Sun, Dec 20

    American Airlines
    2:23 pmSTL
    3h 28m
    Nonstop
    4:51 pmPHX
    American Airlines
    9:54 amPHX
    3h 5m
    Nonstop
    1:59 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  19. Thu, Dec 10 – Mon, Dec 21

    Frontier Airlines
    7:58 pmSTL
    5h 51m
    DEN · 1h 7m
    12:49 am+1PHX
    American Airlines
    9:45 amPHX
    3h 6m
    Nonstop
    1:51 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  20. Thu, Dec 10 – Mon, Dec 21

    American Airlines
    2:23 pmSTL
    3h 28m
    Nonstop
    4:51 pmPHX
    American Airlines
    9:45 amPHX
    3h 6m
    Nonstop
    1:51 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  21. Thu, Dec 10 – Tue, Dec 22

    Frontier Airlines
    7:58 pmSTL
    5h 51m
    DEN · 1h 7m
    12:49 am+1PHX
    Southwest Airlines
    1:35 pmPHX
    2h 50m
    Nonstop
    5:25 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  22. Thu, Dec 10 – Tue, Dec 22

    American Airlines
    2:23 pmSTL
    3h 28m
    Nonstop
    4:51 pmPHX
    American Airlines
    9:45 amPHX
    3h 6m
    Nonstop
    1:51 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  23. Thu, Dec 10 – Thu, Dec 24

    Frontier Airlines
    7:58 pmSTL
    5h 51m
    DEN · 1h 7m
    12:49 am+1PHX
    Southwest Airlines
    8:50 amPHX
    2h 50m
    Nonstop
    12:40 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  24. Thu, Dec 10 – Thu, Dec 24

    Southwest Airlines
    2:45 pmSTL
    6h 25m
    AUS · 1h 45m
    8:10 pmPHX
    Southwest Airlines
    8:50 amPHX
    2h 50m
    Nonstop
    12:40 pmSTL

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

Swipe to see 23 more recent deals.

1 of 24

Make this trip yours

STL ⇄ PHX

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 9, 2026 · Return optionsDec 11, 2026 · Return optionsHotels in Phoenix with Axel
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)
2026-12-10 · one wayAmerican AirlinesAA2303Axel-exclusive $185.002026-10-29T01:28:56Z
2026-12-10 · one wayFrontier AirlinesF94567 + F94753Axel-exclusive $105.002026-10-29T01:28:56Z
2026-12-10 → 2026-12-11Frontier Airlines / Southwest AirlinesF94567 + F94753 / WN3524Axel-exclusive $262.502026-10-29T01:28:56Z
2026-12-10 → 2026-12-11Southwest AirlinesWN4913 + WN1683 / WN3524Axel-exclusive $315.002026-10-29T01:28:56Z
2026-12-10 → 2026-12-12American AirlinesAA2303 / AA2043Axel-exclusive $350.002026-10-29T01:28:56Z
2026-12-10 → 2026-12-12Frontier Airlines / Southwest AirlinesF94567 + F94753 / WN1385Axel-exclusive $262.502026-10-29T01:28:56Z
2026-12-10 → 2026-12-13American AirlinesAA2303 / AA2303Axel-exclusive $350.002026-10-29T01:28:56Z
2026-12-10 → 2026-12-13Frontier Airlines / American AirlinesF94567 + F94753 / AA2303Axel-exclusive $272.502026-10-29T01:28:56Z
2026-12-10 → 2026-12-14American AirlinesAA2303 / AA2303Axel-exclusive $350.002026-10-29T01:28:56Z
2026-12-10 → 2026-12-14Frontier Airlines / American AirlinesF94567 + F94753 / AA2303Axel-exclusive $272.502026-10-29T01:28:56Z
2026-12-10 → 2026-12-15American AirlinesAA2303 / AA2303Axel-exclusive $350.002026-10-29T01:28:56Z
2026-12-10 → 2026-12-15Frontier Airlines / Southwest AirlinesF94567 + F94753 / WN840Axel-exclusive $262.502026-10-29T01:28:56Z
2026-12-10 → 2026-12-16American AirlinesAA2303 / AA2303Axel-exclusive $350.002026-10-29T01:28:56Z
2026-12-10 → 2026-12-16Frontier Airlines / Southwest AirlinesF94567 + F94753 / WN2696Axel-exclusive $262.502026-10-29T01:28:56Z
2026-12-10 → 2026-12-17Frontier Airlines / Southwest AirlinesF94567 + F94753 / WN3525Axel-exclusive $262.502026-10-29T01:28:56Z
2026-12-10 → 2026-12-17Southwest AirlinesWN4913 + WN1683 / WN3525Axel-exclusive $315.002026-10-29T01:28:56Z
2026-12-10 → 2026-12-18Frontier Airlines / Southwest AirlinesF94567 + F94753 / WN3524Axel-exclusive $262.502026-10-29T01:28:56Z
2026-12-10 → 2026-12-18Southwest AirlinesWN4913 + WN1683 / WN3524Axel-exclusive $315.002026-10-29T01:28:56Z
2026-12-10 → 2026-12-19American AirlinesAA2303 / AA2043Axel-exclusive $402.502026-10-29T01:28:56Z
2026-12-10 → 2026-12-19Frontier Airlines / Southwest AirlinesF94567 + F94753 / WN1584Axel-exclusive $312.002026-10-29T01:28:56Z
2026-12-10 → 2026-12-20American AirlinesAA2303 / AA1710Axel-exclusive $402.502026-10-29T01:28:56Z
2026-12-10 → 2026-12-20Frontier Airlines / American AirlinesF94567 + F94753 / AA1710Axel-exclusive $325.002026-10-29T01:28:56Z
2026-12-10 → 2026-12-21American AirlinesAA2303 / AA2303Axel-exclusive $402.502026-10-29T01:28:56Z
2026-12-10 → 2026-12-21Frontier Airlines / American AirlinesF94567 + F94753 / AA2303Axel-exclusive $325.002026-10-29T01:28:56Z
2026-12-10 → 2026-12-22American AirlinesAA2303 / AA2303Axel-exclusive $402.502026-10-29T01:28:56Z
2026-12-10 → 2026-12-22Frontier Airlines / Southwest AirlinesF94567 + F94753 / WN840Axel-exclusive $312.002026-10-29T01:28:56Z
2026-12-10 → 2026-12-23American AirlinesAA2303 / AA2303Axel-exclusive $402.502026-10-29T01:28:56Z
2026-12-10 → 2026-12-23Frontier Airlines / Southwest AirlinesF94567 + F94753 / WN2696Axel-exclusive $312.002026-10-29T01:28:56Z
2026-12-10 → 2026-12-24Frontier Airlines / Southwest AirlinesF94567 + F94753 / WN3525Axel-exclusive $312.002026-10-29T01:28:56Z
2026-12-10 → 2026-12-24Southwest AirlinesWN4913 + WN1683 / WN3525Axel-exclusive $364.502026-10-29T01:28:56Z

Route overview: Saint Louis to Phoenix (PHX) flight deals

2026-12-10 · one way · Axel-exclusive $105.00

  • Frontier Airlines F94567 / F94753: STL 2026-12-10 19:58:00 → PHX 2026-12-11 00:49:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F94567: STL 2026-12-10 19:58:00 → DEN 2026-12-10 21:29:00; layover at DEN: 67 minutes.
    • F94753: DEN 2026-12-10 22:36:00 → PHX 2026-12-11 00:49:00.

2026-12-10 · one way · Axel-exclusive $185.00

  • American Airlines AA2303: STL 2026-12-10 14:23:00 → PHX 2026-12-10 16:51:00; nonstop; 208 minutes. Local airport times.

2026-12-10 → 2026-12-11 · Axel-exclusive $262.50

  • Frontier Airlines F94567 / F94753: STL 2026-12-10 19:58:00 → PHX 2026-12-11 00:49:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F94567: STL 2026-12-10 19:58:00 → DEN 2026-12-10 21:29:00; layover at DEN: 67 minutes.
    • F94753: DEN 2026-12-10 22:36:00 → PHX 2026-12-11 00:49:00.
  • Southwest Airlines WN3524: PHX 2026-12-11 05:45:00 → STL 2026-12-11 09:30:00; nonstop; 165 minutes. Local airport times.

2026-12-10 → 2026-12-11 · Axel-exclusive $315.00

  • Southwest Airlines WN4913 / WN1683: STL 2026-12-10 14:45:00 → PHX 2026-12-10 20:10:00; 1 stop(s) via AUS; 385 minutes. Local airport times.
    • WN4913: STL 2026-12-10 14:45:00 → AUS 2026-12-10 16:50:00; layover at AUS: 105 minutes.
    • WN1683: AUS 2026-12-10 18:35:00 → PHX 2026-12-10 20:10:00.
  • Southwest Airlines WN3524: PHX 2026-12-11 05:45:00 → STL 2026-12-11 09:30:00; nonstop; 165 minutes. Local airport times.

2026-12-10 → 2026-12-12 · Axel-exclusive $262.50

  • Frontier Airlines F94567 / F94753: STL 2026-12-10 19:58:00 → PHX 2026-12-11 00:49:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F94567: STL 2026-12-10 19:58:00 → DEN 2026-12-10 21:29:00; layover at DEN: 67 minutes.
    • F94753: DEN 2026-12-10 22:36:00 → PHX 2026-12-11 00:49:00.
  • Southwest Airlines WN1385: PHX 2026-12-12 18:05:00 → STL 2026-12-12 21:55:00; nonstop; 170 minutes. Local airport times.

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

  • American Airlines AA2303: STL 2026-12-10 14:23:00 → PHX 2026-12-10 16:51:00; nonstop; 208 minutes. Local airport times.
  • American Airlines AA2043: PHX 2026-12-12 19:56:00 → STL 2026-12-12 23:52:00; nonstop; 176 minutes. Local airport times.

2026-12-10 → 2026-12-13 · Axel-exclusive $272.50

  • Frontier Airlines F94567 / F94753: STL 2026-12-10 19:58:00 → PHX 2026-12-11 00:49:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F94567: STL 2026-12-10 19:58:00 → DEN 2026-12-10 21:29:00; layover at DEN: 67 minutes.
    • F94753: DEN 2026-12-10 22:36:00 → PHX 2026-12-11 00:49:00.
  • American Airlines AA2303: PHX 2026-12-13 09:30:00 → STL 2026-12-13 13:36:00; nonstop; 186 minutes. Local airport times.

2026-12-10 → 2026-12-13 · Axel-exclusive $350.00

  • American Airlines AA2303: STL 2026-12-10 14:23:00 → PHX 2026-12-10 16:51:00; nonstop; 208 minutes. Local airport times.
  • American Airlines AA2303: PHX 2026-12-13 09:30:00 → STL 2026-12-13 13:36:00; nonstop; 186 minutes. Local airport times.

2026-12-10 → 2026-12-14 · Axel-exclusive $272.50

  • Frontier Airlines F94567 / F94753: STL 2026-12-10 19:58:00 → PHX 2026-12-11 00:49:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F94567: STL 2026-12-10 19:58:00 → DEN 2026-12-10 21:29:00; layover at DEN: 67 minutes.
    • F94753: DEN 2026-12-10 22:36:00 → PHX 2026-12-11 00:49:00.
  • American Airlines AA2303: PHX 2026-12-14 09:45:00 → STL 2026-12-14 13:51:00; nonstop; 186 minutes. Local airport times.

2026-12-10 → 2026-12-14 · Axel-exclusive $350.00

  • American Airlines AA2303: STL 2026-12-10 14:23:00 → PHX 2026-12-10 16:51:00; nonstop; 208 minutes. Local airport times.
  • American Airlines AA2303: PHX 2026-12-14 09:45:00 → STL 2026-12-14 13:51:00; nonstop; 186 minutes. Local airport times.

2026-12-10 → 2026-12-16 · Axel-exclusive $262.50

  • Frontier Airlines F94567 / F94753: STL 2026-12-10 19:58:00 → PHX 2026-12-11 00:49:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F94567: STL 2026-12-10 19:58:00 → DEN 2026-12-10 21:29:00; layover at DEN: 67 minutes.
    • F94753: DEN 2026-12-10 22:36:00 → PHX 2026-12-11 00:49:00.
  • Southwest Airlines WN2696: PHX 2026-12-16 15:15:00 → STL 2026-12-16 19:05:00; nonstop; 170 minutes. Local airport times.

2026-12-10 → 2026-12-16 · Axel-exclusive $350.00

  • American Airlines AA2303: STL 2026-12-10 14:23:00 → PHX 2026-12-10 16:51:00; nonstop; 208 minutes. Local airport times.
  • American Airlines AA2303: PHX 2026-12-16 09:37:00 → STL 2026-12-16 13:43:00; nonstop; 186 minutes. Local airport times.

2026-12-10 → 2026-12-17 · Axel-exclusive $262.50

  • Frontier Airlines F94567 / F94753: STL 2026-12-10 19:58:00 → PHX 2026-12-11 00:49:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F94567: STL 2026-12-10 19:58:00 → DEN 2026-12-10 21:29:00; layover at DEN: 67 minutes.
    • F94753: DEN 2026-12-10 22:36:00 → PHX 2026-12-11 00:49:00.
  • Southwest Airlines WN3525: PHX 2026-12-17 08:50:00 → STL 2026-12-17 12:40:00; nonstop; 170 minutes. Local airport times.

2026-12-10 → 2026-12-17 · Axel-exclusive $315.00

  • Southwest Airlines WN4913 / WN1683: STL 2026-12-10 14:45:00 → PHX 2026-12-10 20:10:00; 1 stop(s) via AUS; 385 minutes. Local airport times.
    • WN4913: STL 2026-12-10 14:45:00 → AUS 2026-12-10 16:50:00; layover at AUS: 105 minutes.
    • WN1683: AUS 2026-12-10 18:35:00 → PHX 2026-12-10 20:10:00.
  • Southwest Airlines WN3525: PHX 2026-12-17 08:50:00 → STL 2026-12-17 12:40:00; nonstop; 170 minutes. Local airport times.

2026-12-10 → 2026-12-18 · Axel-exclusive $262.50

  • Frontier Airlines F94567 / F94753: STL 2026-12-10 19:58:00 → PHX 2026-12-11 00:49:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F94567: STL 2026-12-10 19:58:00 → DEN 2026-12-10 21:29:00; layover at DEN: 67 minutes.
    • F94753: DEN 2026-12-10 22:36:00 → PHX 2026-12-11 00:49:00.
  • Southwest Airlines WN3524: PHX 2026-12-18 05:45:00 → STL 2026-12-18 09:30:00; nonstop; 165 minutes. Local airport times.

2026-12-10 → 2026-12-18 · Axel-exclusive $315.00

  • Southwest Airlines WN4913 / WN1683: STL 2026-12-10 14:45:00 → PHX 2026-12-10 20:10:00; 1 stop(s) via AUS; 385 minutes. Local airport times.
    • WN4913: STL 2026-12-10 14:45:00 → AUS 2026-12-10 16:50:00; layover at AUS: 105 minutes.
    • WN1683: AUS 2026-12-10 18:35:00 → PHX 2026-12-10 20:10:00.
  • Southwest Airlines WN3524: PHX 2026-12-18 05:45:00 → STL 2026-12-18 09:30:00; nonstop; 165 minutes. Local airport times.

2026-12-10 → 2026-12-20 · Axel-exclusive $325.00

  • Frontier Airlines F94567 / F94753: STL 2026-12-10 19:58:00 → PHX 2026-12-11 00:49:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F94567: STL 2026-12-10 19:58:00 → DEN 2026-12-10 21:29:00; layover at DEN: 67 minutes.
    • F94753: DEN 2026-12-10 22:36:00 → PHX 2026-12-11 00:49:00.
  • American Airlines AA1710: PHX 2026-12-20 09:54:00 → STL 2026-12-20 13:59:00; nonstop; 185 minutes. Local airport times.

2026-12-10 → 2026-12-20 · Axel-exclusive $402.50

  • American Airlines AA2303: STL 2026-12-10 14:23:00 → PHX 2026-12-10 16:51:00; nonstop; 208 minutes. Local airport times.
  • American Airlines AA1710: PHX 2026-12-20 09:54:00 → STL 2026-12-20 13:59:00; nonstop; 185 minutes. Local airport times.

2026-12-10 → 2026-12-21 · Axel-exclusive $325.00

  • Frontier Airlines F94567 / F94753: STL 2026-12-10 19:58:00 → PHX 2026-12-11 00:49:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F94567: STL 2026-12-10 19:58:00 → DEN 2026-12-10 21:29:00; layover at DEN: 67 minutes.
    • F94753: DEN 2026-12-10 22:36:00 → PHX 2026-12-11 00:49:00.
  • American Airlines AA2303: PHX 2026-12-21 09:45:00 → STL 2026-12-21 13:51:00; nonstop; 186 minutes. Local airport times.

2026-12-10 → 2026-12-21 · Axel-exclusive $402.50

  • American Airlines AA2303: STL 2026-12-10 14:23:00 → PHX 2026-12-10 16:51:00; nonstop; 208 minutes. Local airport times.
  • American Airlines AA2303: PHX 2026-12-21 09:45:00 → STL 2026-12-21 13:51:00; nonstop; 186 minutes. Local airport times.

2026-12-10 → 2026-12-22 · Axel-exclusive $312.00

  • Frontier Airlines F94567 / F94753: STL 2026-12-10 19:58:00 → PHX 2026-12-11 00:49:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F94567: STL 2026-12-10 19:58:00 → DEN 2026-12-10 21:29:00; layover at DEN: 67 minutes.
    • F94753: DEN 2026-12-10 22:36:00 → PHX 2026-12-11 00:49:00.
  • Southwest Airlines WN840: PHX 2026-12-22 13:35:00 → STL 2026-12-22 17:25:00; nonstop; 170 minutes. Local airport times.

2026-12-10 → 2026-12-22 · Axel-exclusive $402.50

  • American Airlines AA2303: STL 2026-12-10 14:23:00 → PHX 2026-12-10 16:51:00; nonstop; 208 minutes. Local airport times.
  • American Airlines AA2303: PHX 2026-12-22 09:45:00 → STL 2026-12-22 13:51:00; nonstop; 186 minutes. Local airport times.

2026-12-10 → 2026-12-24 · Axel-exclusive $312.00

  • Frontier Airlines F94567 / F94753: STL 2026-12-10 19:58:00 → PHX 2026-12-11 00:49:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F94567: STL 2026-12-10 19:58:00 → DEN 2026-12-10 21:29:00; layover at DEN: 67 minutes.
    • F94753: DEN 2026-12-10 22:36:00 → PHX 2026-12-11 00:49:00.
  • Southwest Airlines WN3525: PHX 2026-12-24 08:50:00 → STL 2026-12-24 12:40:00; nonstop; 170 minutes. Local airport times.

2026-12-10 → 2026-12-24 · Axel-exclusive $364.50

  • Southwest Airlines WN4913 / WN1683: STL 2026-12-10 14:45:00 → PHX 2026-12-10 20:10:00; 1 stop(s) via AUS; 385 minutes. Local airport times.
    • WN4913: STL 2026-12-10 14:45:00 → AUS 2026-12-10 16:50:00; layover at AUS: 105 minutes.
    • WN1683: AUS 2026-12-10 18:35:00 → PHX 2026-12-10 20:10:00.
  • Southwest Airlines WN3525: PHX 2026-12-24 08:50:00 → STL 2026-12-24 12:40:00; nonstop; 170 minutes. Local airport times.

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For AI assistants

  • This page: Saint Louis (STL) to Phoenix (PHX) · Dec 10, 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 Phoenix (PHX) 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.