Travel with Axel,
get the best price.

Phoenix → Saint Louis

Dec 13, 2026 · return Dec 15, 2026

PHX → STL1 adulteconomyRound trip

10 flight options · 4 airlines

Nonstop flights

Sun, Dec 13 – Tue, Dec 15

Southwest Airlines
9:10 amPHX
2h 50m
Nonstop
1:00 pmSTL
Southwest Airlines
5:55 amSTL
3h 25m
Nonstop
8:20 amPHX

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Tue, Dec 15

American Airlines
9:54 amPHX
3h 5m
Nonstop
1:59 pmSTL
American Airlines
2:28 pmSTL
3h 27m
Nonstop
4:55 pmPHX

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Tue, Dec 15

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

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Tue, Dec 15

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

Round-trip total · 1 adult · Taxes included

One-stop flights

Sun, Dec 13 – Tue, Dec 15

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

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Tue, Dec 15

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

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Tue, Dec 15

Southwest Airlines
12:45 pmPHX
5h 25m
AUS · 1h 10m
7:10 pmSTL
Southwest Airlines
5:55 amSTL
3h 25m
Nonstop
8:20 amPHX

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Tue, Dec 15

Southwest Airlines
12:05 pmPHX
6h 5m
MCI · 2h 25m
7:10 pmSTL
Southwest Airlines
5:55 amSTL
3h 25m
Nonstop
8:20 amPHX

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Tue, Dec 15

Southwest Airlines
12:05 pmPHX
6h 5m
SAT · 1h 50m
7:10 pmSTL
Southwest Airlines
5:55 amSTL
3h 25m
Nonstop
8:20 amPHX

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Tue, Dec 15

American Airlines
5:02 pmPHX
5h 32m
DFW · 1h 10m
11:34 pmSTL
American Airlines
2:28 pmSTL
3h 27m
Nonstop
4:55 pmPHX

Round-trip total · 1 adult · Taxes included

Make this trip yours

PHX ⇄ STL

Economy

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

No account needed to see prices.

Already have an account? Log in

Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, Southwest Airlines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

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)
2026-12-13 → 2026-12-15Southwest AirlinesWN709 / WN679$320.002026-10-29T01:56:39Z
2026-12-13 → 2026-12-15American AirlinesAA1710 / AA2303$350.002026-10-29T01:56:39Z
2026-12-13 → 2026-12-15United AirlinesUA333 + UA1422 / UA5939 + UA479$350.002026-10-29T01:56:39Z
2026-12-13 → 2026-12-15Delta Air LinesDL1431 + DL2666 / DL1597 + DL2208$370.002026-10-29T01:56:39Z
2026-12-13 → 2026-12-15Southwest AirlinesWN3524 / WN679$320.002026-10-29T01:56:39Z
2026-12-13 → 2026-12-15American AirlinesAA2043 / AA2303$350.002026-10-29T01:56:39Z
2026-12-13 → 2026-12-15Southwest AirlinesWN3389 + WN438 / WN679$310.002026-10-29T01:56:39Z
2026-12-13 → 2026-12-15Southwest AirlinesWN3353 + WN2715 / WN679$310.002026-10-29T01:56:39Z
2026-12-13 → 2026-12-15Southwest AirlinesWN4838 + WN3801 / WN679$310.002026-10-29T01:56:39Z
2026-12-13 → 2026-12-15American AirlinesAA555 + AA2289 / AA2303$340.002026-10-29T01:56:39Z

2026-12-13 → 2026-12-15 · $320.00

  • Southwest Airlines WN709: PHX 2026-12-13 09:10:00 → STL 2026-12-13 13:00:00; nonstop; 170 minutes. Local airport times.
  • Southwest Airlines WN679: STL 2026-12-15 05:55:00 → PHX 2026-12-15 08:20:00; nonstop; 205 minutes. Local airport times.

2026-12-13 → 2026-12-15 · $350.00

  • American Airlines AA1710: PHX 2026-12-13 09:54:00 → STL 2026-12-13 13:59:00; nonstop; 185 minutes. Local airport times.
  • American Airlines AA2303: STL 2026-12-15 14:28:00 → PHX 2026-12-15 16:55:00; nonstop; 207 minutes. Local airport times.

2026-12-13 → 2026-12-15 · $350.00

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

2026-12-13 → 2026-12-15 · $370.00

  • Delta Air Lines DL1431 / DL2666: PHX 2026-12-13 14:32:00 → STL 2026-12-13 21:18:00; 1 stop(s) via SLC; 346 minutes. Local airport times.
    • DL1431: PHX 2026-12-13 14:32:00 → SLC 2026-12-13 16:14:00; layover at SLC: 76 minutes.
    • DL2666: SLC 2026-12-13 17:30:00 → STL 2026-12-13 21:18:00.
  • 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.

2026-12-13 → 2026-12-15 · $320.00

  • Southwest Airlines WN3524: PHX 2026-12-13 05:45:00 → STL 2026-12-13 09:30:00; nonstop; 165 minutes. Local airport times.
  • Southwest Airlines WN679: STL 2026-12-15 05:55:00 → PHX 2026-12-15 08:20:00; nonstop; 205 minutes. Local airport times.

2026-12-13 → 2026-12-15 · $350.00

  • American Airlines AA2043: PHX 2026-12-13 19:56:00 → STL 2026-12-13 23:52:00; nonstop; 176 minutes. Local airport times.
  • American Airlines AA2303: STL 2026-12-15 14:28:00 → PHX 2026-12-15 16:55:00; nonstop; 207 minutes. Local airport times.

2026-12-13 → 2026-12-15 · $310.00

  • Southwest Airlines WN3389 / WN438: PHX 2026-12-13 12:45:00 → STL 2026-12-13 19:10:00; 1 stop(s) via AUS; 325 minutes. Local airport times.
    • WN3389: PHX 2026-12-13 12:45:00 → AUS 2026-12-13 15:55:00; layover at AUS: 70 minutes.
    • WN438: AUS 2026-12-13 17:05:00 → STL 2026-12-13 19:10:00.
  • Southwest Airlines WN679: STL 2026-12-15 05:55:00 → PHX 2026-12-15 08:20:00; nonstop; 205 minutes. Local airport times.

2026-12-13 → 2026-12-15 · $310.00

  • Southwest Airlines WN3353 / WN2715: PHX 2026-12-13 12:05:00 → STL 2026-12-13 19:10:00; 1 stop(s) via MCI; 365 minutes. Local airport times.
    • WN3353: PHX 2026-12-13 12:05:00 → MCI 2026-12-13 15:40:00; layover at MCI: 145 minutes.
    • WN2715: MCI 2026-12-13 18:05:00 → STL 2026-12-13 19:10:00.
  • Southwest Airlines WN679: STL 2026-12-15 05:55:00 → PHX 2026-12-15 08:20:00; nonstop; 205 minutes. Local airport times.

2026-12-13 → 2026-12-15 · $310.00

  • Southwest Airlines WN4838 / WN3801: PHX 2026-12-13 12:05:00 → STL 2026-12-13 19:10:00; 1 stop(s) via SAT; 365 minutes. Local airport times.
    • WN4838: PHX 2026-12-13 12:05:00 → SAT 2026-12-13 15:15:00; layover at SAT: 110 minutes.
    • WN3801: SAT 2026-12-13 17:05:00 → STL 2026-12-13 19:10:00.
  • Southwest Airlines WN679: STL 2026-12-15 05:55:00 → PHX 2026-12-15 08:20:00; nonstop; 205 minutes. Local airport times.

2026-12-13 → 2026-12-15 · $340.00

  • American Airlines AA555 / AA2289: PHX 2026-12-13 17:02:00 → STL 2026-12-13 23:34:00; 1 stop(s) via DFW; 332 minutes. Local airport times.
    • AA555: PHX 2026-12-13 17:02:00 → DFW 2026-12-13 20:35:00; layover at DFW: 70 minutes.
    • AA2289: DFW 2026-12-13 21:45:00 → STL 2026-12-13 23:34:00.
  • American Airlines AA2303: STL 2026-12-15 14:28:00 → PHX 2026-12-15 16:55:00; nonstop; 207 minutes. Local airport times.

More dates for this route