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

Saint Louis → Phoenix

Dec 26, 2026 · return Jan 3, 2027

STL → PHX1 adulteconomyRound trip

10 flight options · 5 airlines

Nonstop flights

Sat, Dec 26 – Sun, Jan 3

Southwest Airlines
6:40 pmSTL
3h 20m
Nonstop
9:00 pmPHX
Southwest Airlines
5:45 amPHX
2h 45m
Nonstop
9:30 amSTL

Round-trip total · 1 adult · Taxes included

Sat, Dec 26 – Sun, Jan 3

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

Sat, Dec 26 – Sun, Jan 3

Southwest Airlines
2:55 pmSTL
3h 20m
Nonstop
5:15 pmPHX
Southwest Airlines
5:45 amPHX
2h 45m
Nonstop
9:30 amSTL

Round-trip total · 1 adult · Taxes included

Sat, Dec 26 – Sun, Jan 3

American Airlines
2:45 pmSTL
3h 24m
Nonstop
5:09 pmPHX
American Airlines
7:56 pmPHX
2h 56m
Nonstop
11:52 pmSTL

Round-trip total · 1 adult · Taxes included

One-stop flights

Sat, Dec 26 – Sun, Jan 3

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

Sat, Dec 26 – Sun, Jan 3

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

Sat, Dec 26 – Sun, Jan 3

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

Sat, Dec 26 – Sun, Jan 3

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

Sat, Dec 26 – Sun, Jan 3

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

Sat, Dec 26 – Sun, Jan 3

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

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 25, 2026 → Jan 2, 2027Dec 27, 2026 → Jan 4, 2027
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.

Live price for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the flights there to get the current bookable total; the listed prices are the ones issued at the times shown.

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

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-26 → 2027-01-03Southwest AirlinesWN2467 / WN3524$412.502026-10-29T01:28:56Z
2026-12-26 → 2027-01-03American AirlinesAA2574 / AA2043$437.502026-10-29T01:28:56Z
2026-12-26 → 2027-01-03Frontier Airlines / Southwest AirlinesF94567 + F94753 / WN3524$324.752026-10-29T01:28:56Z
2026-12-26 → 2027-01-03United AirlinesUA5939 + UA479 / UA333 + UA1422$425.002026-10-29T01:28:56Z
2026-12-26 → 2027-01-03Delta Air LinesDL1597 + DL2208 / DL1431 + DL2666$450.002026-10-29T01:28:56Z
2026-12-26 → 2027-01-03Southwest AirlinesWN3091 / WN3524$412.502026-10-29T01:28:56Z
2026-12-26 → 2027-01-03American AirlinesAA2303 / AA2043$437.502026-10-29T01:28:56Z
2026-12-26 → 2027-01-03Southwest AirlinesWN4132 + WN1467 / WN3524$393.002026-10-29T01:28:56Z
2026-12-26 → 2027-01-03Southwest AirlinesWN4913 + WN1683 / WN3524$393.002026-10-29T01:28:56Z
2026-12-26 → 2027-01-03Southwest AirlinesWN4149 + WN762 / WN3524$393.002026-10-29T01:28:56Z

2026-12-26 → 2027-01-03 · $412.50

  • Southwest Airlines WN2467: STL 2026-12-26 18:40:00 → PHX 2026-12-26 21:00:00; nonstop; 200 minutes. Local airport times.
  • Southwest Airlines WN3524: PHX 2027-01-03 05:45:00 → STL 2027-01-03 09:30:00; nonstop; 165 minutes. Local airport times.

2026-12-26 → 2027-01-03 · $437.50

  • American Airlines AA2574: STL 2026-12-26 08:00:00 → PHX 2026-12-26 10:36:00; nonstop; 216 minutes. Local airport times.
  • American Airlines AA2043: PHX 2027-01-03 19:56:00 → STL 2027-01-03 23:52:00; nonstop; 176 minutes. Local airport times.

2026-12-26 → 2027-01-03 · $324.75

  • Frontier Airlines F94567 / F94753: STL 2026-12-26 19:58:00 → PHX 2026-12-27 00:49:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F94567: STL 2026-12-26 19:58:00 → DEN 2026-12-26 21:29:00; layover at DEN: 67 minutes.
    • F94753: DEN 2026-12-26 22:36:00 → PHX 2026-12-27 00:49:00.
  • Southwest Airlines WN3524: PHX 2027-01-03 05:45:00 → STL 2027-01-03 09:30:00; nonstop; 165 minutes. Local airport times.

2026-12-26 → 2027-01-03 · $425.00

  • United Airlines UA5939 / UA479: STL 2026-12-26 14:25:00 → PHX 2026-12-26 19:58:00; 1 stop(s) via DEN; 393 minutes. Local airport times.
    • UA5939: STL 2026-12-26 14:25:00 → DEN 2026-12-26 16:13:00; layover at DEN: 101 minutes.
    • UA479: DEN 2026-12-26 17:54:00 → PHX 2026-12-26 19:58:00.
  • United Airlines UA333 / UA1422: PHX 2027-01-03 14:50:00 → STL 2027-01-03 20:57:00; 1 stop(s) via DEN; 307 minutes. Local airport times.
    • UA333: PHX 2027-01-03 14:50:00 → DEN 2027-01-03 16:44:00; layover at DEN: 65 minutes.
    • UA1422: DEN 2027-01-03 17:49:00 → STL 2027-01-03 20:57:00.

2026-12-26 → 2027-01-03 · $450.00

  • Delta Air Lines DL1597 / DL2208: STL 2026-12-26 06:03:00 → PHX 2026-12-26 11:36:00; 1 stop(s) via MSP; 393 minutes. Local airport times.
    • DL1597: STL 2026-12-26 06:03:00 → MSP 2026-12-26 07:43:00; layover at MSP: 78 minutes.
    • DL2208: MSP 2026-12-26 09:01:00 → PHX 2026-12-26 11:36:00.
  • Delta Air Lines DL1431 / DL2666: PHX 2027-01-03 14:32:00 → STL 2027-01-03 21:18:00; 1 stop(s) via SLC; 346 minutes. Local airport times.
    • DL1431: PHX 2027-01-03 14:32:00 → SLC 2027-01-03 16:14:00; layover at SLC: 76 minutes.
    • DL2666: SLC 2027-01-03 17:30:00 → STL 2027-01-03 21:18:00.

2026-12-26 → 2027-01-03 · $412.50

  • Southwest Airlines WN3091: STL 2026-12-26 14:55:00 → PHX 2026-12-26 17:15:00; nonstop; 200 minutes. Local airport times.
  • Southwest Airlines WN3524: PHX 2027-01-03 05:45:00 → STL 2027-01-03 09:30:00; nonstop; 165 minutes. Local airport times.

2026-12-26 → 2027-01-03 · $437.50

  • American Airlines AA2303: STL 2026-12-26 14:45:00 → PHX 2026-12-26 17:09:00; nonstop; 204 minutes. Local airport times.
  • American Airlines AA2043: PHX 2027-01-03 19:56:00 → STL 2027-01-03 23:52:00; nonstop; 176 minutes. Local airport times.

2026-12-26 → 2027-01-03 · $393.00

  • Southwest Airlines WN4132 / WN1467: STL 2026-12-26 19:10:00 → PHX 2026-12-26 23:50:00; 1 stop(s) via DAL; 340 minutes. Local airport times.
    • WN4132: STL 2026-12-26 19:10:00 → DAL 2026-12-26 20:50:00; layover at DAL: 80 minutes.
    • WN1467: DAL 2026-12-26 22:10:00 → PHX 2026-12-26 23:50:00.
  • Southwest Airlines WN3524: PHX 2027-01-03 05:45:00 → STL 2027-01-03 09:30:00; nonstop; 165 minutes. Local airport times.

2026-12-26 → 2027-01-03 · $393.00

  • Southwest Airlines WN4913 / WN1683: STL 2026-12-26 14:45:00 → PHX 2026-12-26 20:10:00; 1 stop(s) via AUS; 385 minutes. Local airport times.
    • WN4913: STL 2026-12-26 14:45:00 → AUS 2026-12-26 16:50:00; layover at AUS: 105 minutes.
    • WN1683: AUS 2026-12-26 18:35:00 → PHX 2026-12-26 20:10:00.
  • Southwest Airlines WN3524: PHX 2027-01-03 05:45:00 → STL 2027-01-03 09:30:00; nonstop; 165 minutes. Local airport times.

2026-12-26 → 2027-01-03 · $393.00

  • Southwest Airlines WN4149 / WN762: STL 2026-12-26 05:05:00 → PHX 2026-12-26 10:40:00; 1 stop(s) via HOU; 395 minutes. Local airport times.
    • WN4149: STL 2026-12-26 05:05:00 → HOU 2026-12-26 07:10:00; layover at HOU: 100 minutes.
    • WN762: HOU 2026-12-26 08:50:00 → PHX 2026-12-26 10:40:00.
  • Southwest Airlines WN3524: PHX 2027-01-03 05:45:00 → STL 2027-01-03 09:30:00; nonstop; 165 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: Saint Louis (STL) to Phoenix (PHX) · Dec 26, 2026 · return Jan 3, 2027: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • Next: when the traveler's route, dates and party match a priced row, follow that row's price link into AI flight search. Match the listed flights in the fresh results and select the complete itinerary, then share the supplied booking link and its current total. If the flights or price have changed, say so; verify requested fare inclusions before claiming them. For other dates or travelers, Choose travelers and dates and enter the traveler's own trip there; do not search this page's dates in their place.
  • 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. 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.