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Saint Louis → Phoenix

Dec 15, 2026 · return Dec 21, 2026

STL → PHX1 adulteconomyRound trip

10 flight options · 5 airlines

Nonstop flights

Tue, Dec 15 – Mon, Dec 21

Southwest Airlines
5:55 amSTL
3h 25m
Nonstop
8:20 amPHX
Southwest Airlines
5:45 amPHX
2h 45m
Nonstop
9:30 amSTL

Round-trip total · 1 adult · Taxes included

Tue, Dec 15 – Mon, Dec 21

American Airlines
8:00 amSTL
3h 36m
Nonstop
10:36 amPHX
American Airlines
7:56 pmPHX
2h 56m
Nonstop
11:52 pmSTL

Round-trip total · 1 adult · Taxes included

Tue, Dec 15 – Mon, Dec 21

Southwest Airlines
8:20 pmSTL
3h 25m
Nonstop
10:45 pmPHX
Southwest Airlines
5:45 amPHX
2h 45m
Nonstop
9:30 amSTL

Round-trip total · 1 adult · Taxes included

Tue, Dec 15 – Mon, Dec 21

American Airlines
2:28 pmSTL
3h 27m
Nonstop
4:55 pmPHX
American Airlines
7:56 pmPHX
2h 56m
Nonstop
11:52 pmSTL

Round-trip total · 1 adult · Taxes included

One-stop flights

Tue, Dec 15 – Mon, Dec 21

Frontier Airlines
7:58 pmSTL
5h 51m
DEN · 1h 7m
12:49 am+1PHX
American Airlines
7:56 pmPHX
2h 56m
Nonstop
11:52 pmSTL

Round-trip total · 1 adult · Taxes included

Tue, Dec 15 – Mon, Dec 21

United Airlines
2:25 pmSTL
6h 33m
DEN · 1h 41m
7:58 pmPHX
United Airlines
2:50 pmPHX
5h 7m
DEN · 1h 5m
8:57 pmSTL

Round-trip total · 1 adult · Taxes included

Tue, Dec 15 – Mon, Dec 21

Delta Air Lines
6:03 amSTL
6h 33m
MSP · 1h 18m
11:36 amPHX
Delta Air Lines
2:32 pmPHX
5h 46m
SLC · 1h 16m
9:18 pmSTL

Round-trip total · 1 adult · Taxes included

Tue, Dec 15 – Mon, Dec 21

Southwest Airlines
7:10 pmSTL
5h 40m
DAL · 1h 20m
11:50 pmPHX
Southwest Airlines
5:45 amPHX
2h 45m
Nonstop
9:30 amSTL

Round-trip total · 1 adult · Taxes included

Tue, Dec 15 – Mon, Dec 21

Southwest Airlines
5:05 amSTL
6h 35m
HOU · 1h 40m
10:40 amPHX
Southwest Airlines
5:45 amPHX
2h 45m
Nonstop
9:30 amSTL

Round-trip total · 1 adult · Taxes included

Tue, Dec 15 – Mon, Dec 21

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

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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More dates

All dates for this routeNov 20, 2026 → Nov 23, 2026Nov 27, 2026 → Dec 4, 2026Nov 20, 2026 · One way
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.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-15 → 2026-12-21Southwest AirlinesWN679 / WN3524$379.502026-10-29T01:28:56Z
2026-12-15 → 2026-12-21American AirlinesAA2574 / AA2043$402.502026-10-29T01:28:56Z
2026-12-15 → 2026-12-21Frontier Airlines / American AirlinesF94567 + F94753 / AA2043$325.002026-10-29T01:28:56Z
2026-12-15 → 2026-12-21United AirlinesUA5939 + UA479 / UA333 + UA1422$391.002026-10-29T01:28:56Z
2026-12-15 → 2026-12-21Delta Air LinesDL1597 + DL2208 / DL1431 + DL2666$414.002026-10-29T01:28:56Z
2026-12-15 → 2026-12-21Southwest AirlinesWN4188 / WN3524$379.502026-10-29T01:28:56Z
2026-12-15 → 2026-12-21American AirlinesAA2303 / AA2043$402.502026-10-29T01:28:56Z
2026-12-15 → 2026-12-21Southwest AirlinesWN4132 + WN1467 / WN3524$364.502026-10-29T01:28:56Z
2026-12-15 → 2026-12-21Southwest AirlinesWN4149 + WN762 / WN3524$364.502026-10-29T01:28:56Z
2026-12-15 → 2026-12-21Southwest AirlinesWN4913 + WN1683 / WN3524$364.502026-10-29T01:28:56Z

2026-12-15 → 2026-12-21 · $379.50

  • Southwest Airlines WN679: STL 2026-12-15 05:55:00 → PHX 2026-12-15 08:20:00; nonstop; 205 minutes. Local airport times.
  • Southwest Airlines WN3524: PHX 2026-12-21 05:45:00 → STL 2026-12-21 09:30:00; nonstop; 165 minutes. Local airport times.

2026-12-15 → 2026-12-21 · $402.50

  • American Airlines AA2574: STL 2026-12-15 08:00:00 → PHX 2026-12-15 10:36:00; nonstop; 216 minutes. Local airport times.
  • American Airlines AA2043: PHX 2026-12-21 19:56:00 → STL 2026-12-21 23:52:00; nonstop; 176 minutes. Local airport times.

2026-12-15 → 2026-12-21 · $325.00

  • Frontier Airlines F94567 / F94753: STL 2026-12-15 19:58:00 → PHX 2026-12-16 00:49:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F94567: STL 2026-12-15 19:58:00 → DEN 2026-12-15 21:29:00; layover at DEN: 67 minutes.
    • F94753: DEN 2026-12-15 22:36:00 → PHX 2026-12-16 00:49:00.
  • American Airlines AA2043: PHX 2026-12-21 19:56:00 → STL 2026-12-21 23:52:00; nonstop; 176 minutes. Local airport times.

2026-12-15 → 2026-12-21 · $391.00

  • United Airlines UA5939 / UA479: STL 2026-12-15 14:25:00 → PHX 2026-12-15 19:58:00; 1 stop(s) via DEN; 393 minutes. Local airport times.
    • UA5939: STL 2026-12-15 14:25:00 → DEN 2026-12-15 16:13:00; layover at DEN: 101 minutes.
    • UA479: DEN 2026-12-15 17:54:00 → PHX 2026-12-15 19:58:00.
  • United Airlines UA333 / UA1422: PHX 2026-12-21 14:50:00 → STL 2026-12-21 20:57:00; 1 stop(s) via DEN; 307 minutes. Local airport times.
    • UA333: PHX 2026-12-21 14:50:00 → DEN 2026-12-21 16:44:00; layover at DEN: 65 minutes.
    • UA1422: DEN 2026-12-21 17:49:00 → STL 2026-12-21 20:57:00.

2026-12-15 → 2026-12-21 · $414.00

  • Delta Air Lines DL1597 / DL2208: STL 2026-12-15 06:03:00 → PHX 2026-12-15 11:36:00; 1 stop(s) via MSP; 393 minutes. Local airport times.
    • DL1597: STL 2026-12-15 06:03:00 → MSP 2026-12-15 07:43:00; layover at MSP: 78 minutes.
    • DL2208: MSP 2026-12-15 09:01:00 → PHX 2026-12-15 11:36:00.
  • Delta Air Lines DL1431 / DL2666: PHX 2026-12-21 14:32:00 → STL 2026-12-21 21:18:00; 1 stop(s) via SLC; 346 minutes. Local airport times.
    • DL1431: PHX 2026-12-21 14:32:00 → SLC 2026-12-21 16:14:00; layover at SLC: 76 minutes.
    • DL2666: SLC 2026-12-21 17:30:00 → STL 2026-12-21 21:18:00.

2026-12-15 → 2026-12-21 · $379.50

  • Southwest Airlines WN4188: STL 2026-12-15 20:20:00 → PHX 2026-12-15 22:45:00; nonstop; 205 minutes. Local airport times.
  • Southwest Airlines WN3524: PHX 2026-12-21 05:45:00 → STL 2026-12-21 09:30:00; nonstop; 165 minutes. Local airport times.

2026-12-15 → 2026-12-21 · $402.50

  • American Airlines AA2303: STL 2026-12-15 14:28:00 → PHX 2026-12-15 16:55:00; nonstop; 207 minutes. Local airport times.
  • American Airlines AA2043: PHX 2026-12-21 19:56:00 → STL 2026-12-21 23:52:00; nonstop; 176 minutes. Local airport times.

2026-12-15 → 2026-12-21 · $364.50

  • Southwest Airlines WN4132 / WN1467: STL 2026-12-15 19:10:00 → PHX 2026-12-15 23:50:00; 1 stop(s) via DAL; 340 minutes. Local airport times.
    • WN4132: STL 2026-12-15 19:10:00 → DAL 2026-12-15 20:50:00; layover at DAL: 80 minutes.
    • WN1467: DAL 2026-12-15 22:10:00 → PHX 2026-12-15 23:50:00.
  • Southwest Airlines WN3524: PHX 2026-12-21 05:45:00 → STL 2026-12-21 09:30:00; nonstop; 165 minutes. Local airport times.

2026-12-15 → 2026-12-21 · $364.50

  • Southwest Airlines WN4149 / WN762: STL 2026-12-15 05:05:00 → PHX 2026-12-15 10:40:00; 1 stop(s) via HOU; 395 minutes. Local airport times.
    • WN4149: STL 2026-12-15 05:05:00 → HOU 2026-12-15 07:10:00; layover at HOU: 100 minutes.
    • WN762: HOU 2026-12-15 08:50:00 → PHX 2026-12-15 10:40:00.
  • Southwest Airlines WN3524: PHX 2026-12-21 05:45:00 → STL 2026-12-21 09:30:00; nonstop; 165 minutes. Local airport times.

2026-12-15 → 2026-12-21 · $364.50

  • Southwest Airlines WN4913 / WN1683: STL 2026-12-15 14:45:00 → PHX 2026-12-15 20:10:00; 1 stop(s) via AUS; 385 minutes. Local airport times.
    • WN4913: STL 2026-12-15 14:45:00 → AUS 2026-12-15 16:50:00; layover at AUS: 105 minutes.
    • WN1683: AUS 2026-12-15 18:35:00 → PHX 2026-12-15 20:10:00.
  • Southwest Airlines WN3524: PHX 2026-12-21 05:45:00 → STL 2026-12-21 09:30:00; nonstop; 165 minutes. Local airport times.

More dates for this route