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Philadelphia → Saint Louis

Dec 9, 2026 · return Dec 10, 2026

PHL → STL1 adulteconomyRound trip

10 flight options · 5 airlines

Nonstop flights

Wed, Dec 9 – Thu, Dec 10

Southwest Airlines
6:00 amPHL
2h 45m
Nonstop
7:45 amSTL
Southwest Airlines
7:55 pmSTL
2h 10m
Nonstop
11:05 pmPHL

Round-trip total · 1 adult · Taxes included

Wed, Dec 9 – Thu, Dec 10

American Airlines
10:35 amPHL
2h 50m
Nonstop
12:25 pmSTL
American Airlines
1:17 pmSTL
2h 16m
Nonstop
4:33 pmPHL

Round-trip total · 1 adult · Taxes included

Wed, Dec 9 – Thu, Dec 10

Southwest Airlines
2:45 pmPHL
2h 35m
Nonstop
4:20 pmSTL
Southwest Airlines
7:55 pmSTL
2h 10m
Nonstop
11:05 pmPHL

Round-trip total · 1 adult · Taxes included

Wed, Dec 9 – Thu, Dec 10

American Airlines
6:40 pmPHL
2h 51m
Nonstop
8:31 pmSTL
American Airlines
1:17 pmSTL
2h 16m
Nonstop
4:33 pmPHL

Round-trip total · 1 adult · Taxes included

One-stop flights

Wed, Dec 9 – Thu, Dec 10

Frontier Airlines
12:49 pmPHL
5h 53m
ATL · 1h 30m
5:42 pmSTL
Frontier Airlines
12:02 pmSTL
5h 30m
ATL · 1h 42m
6:32 pmPHL

Round-trip total · 1 adult · Taxes included

Wed, Dec 9 – Thu, Dec 10

United Airlines
3:05 pmPHL
5h 30m
IAD · 1h 42m
7:35 pmSTL
United Airlines
1:23 pmSTL
4h 39m
IAD · 1h 17m
7:02 pmPHL

Round-trip total · 1 adult · Taxes included

Wed, Dec 9 – Thu, Dec 10

Delta Air Lines
9:43 amPHL
4h 47m
DTW · 1h 8m
1:30 pmSTL
Delta Air Lines
10:14 amSTL
5h 21m
DTW · 2h 13m
4:35 pmPHL

Round-trip total · 1 adult · Taxes included

Wed, Dec 9 – Thu, Dec 10

Southwest Airlines
7:30 amPHL
6h 10m
MDW · 2h 40m
12:40 pmSTL
Southwest Airlines
7:55 pmSTL
2h 10m
Nonstop
11:05 pmPHL

Round-trip total · 1 adult · Taxes included

Wed, Dec 9 – Thu, Dec 10

American Airlines
3:06 pmPHL
5h 24m
CLT · 1h 23m
7:30 pmSTL
American Airlines
1:17 pmSTL
2h 16m
Nonstop
4:33 pmPHL

Round-trip total · 1 adult · Taxes included

Wed, Dec 9 – Thu, Dec 10

American Airlines
7:35 amPHL
6h 7m
BOS · 1h 15m
12:42 pmSTL
American Airlines
1:17 pmSTL
2h 16m
Nonstop
4:33 pmPHL

Round-trip total · 1 adult · Taxes included

Make this trip yours

PHL ⇄ STL

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)
2026-12-09 → 2026-12-10Southwest AirlinesWN3375 / WN4923$300.002026-10-29T01:56:03Z
2026-12-09 → 2026-12-10American AirlinesAA5073 / AA5477$340.002026-10-29T01:56:03Z
2026-12-09 → 2026-12-10Frontier AirlinesF91147 + F94473 / F94474 + F92298$180.002026-10-29T01:56:03Z
2026-12-09 → 2026-12-10United AirlinesUA4575 + UA4527 / UA3495 + UA4405$310.002026-10-29T01:56:03Z
2026-12-09 → 2026-12-10Delta Air LinesDL2968 + DL1371 / DL2868 + DL1391$320.002026-10-29T01:56:03Z
2026-12-09 → 2026-12-10Southwest AirlinesWN1424 / WN4923$300.002026-10-29T01:56:03Z
2026-12-09 → 2026-12-10American AirlinesAA5224 / AA5477$340.002026-10-29T01:56:03Z
2026-12-09 → 2026-12-10Southwest AirlinesWN3372 + WN2737 / WN4923$290.002026-10-29T01:56:03Z
2026-12-09 → 2026-12-10American AirlinesAA567 + AA2937 / AA5477$320.002026-10-29T01:56:03Z
2026-12-09 → 2026-12-10American AirlinesAA3308 + AA4341 / AA5477$320.002026-10-29T01:56:03Z

2026-12-09 → 2026-12-10 · $300.00

  • Southwest Airlines WN3375: PHL 2026-12-09 06:00:00 → STL 2026-12-09 07:45:00; nonstop; 165 minutes. Local airport times.
  • Southwest Airlines WN4923: STL 2026-12-10 19:55:00 → PHL 2026-12-10 23:05:00; nonstop; 130 minutes. Local airport times.

2026-12-09 → 2026-12-10 · $340.00

  • American Airlines AA5073: PHL 2026-12-09 10:35:00 → STL 2026-12-09 12:25:00; nonstop; 170 minutes. Local airport times.
  • American Airlines AA5477: STL 2026-12-10 13:17:00 → PHL 2026-12-10 16:33:00; nonstop; 136 minutes. Local airport times.

2026-12-09 → 2026-12-10 · $180.00

  • Frontier Airlines F91147 / F94473: PHL 2026-12-09 12:49:00 → STL 2026-12-09 17:42:00; 1 stop(s) via ATL; 353 minutes. Local airport times.
    • F91147: PHL 2026-12-09 12:49:00 → ATL 2026-12-09 15:19:00; layover at ATL: 90 minutes.
    • F94473: ATL 2026-12-09 16:49:00 → STL 2026-12-09 17:42:00.
  • Frontier Airlines F94474 / F92298: STL 2026-12-10 12:02:00 → PHL 2026-12-10 18:32:00; 1 stop(s) via ATL; 330 minutes. Local airport times.
    • F94474: STL 2026-12-10 12:02:00 → ATL 2026-12-10 14:42:00; layover at ATL: 102 minutes.
    • F92298: ATL 2026-12-10 16:24:00 → PHL 2026-12-10 18:32:00.

2026-12-09 → 2026-12-10 · $310.00

  • United Airlines UA4575 / UA4527: PHL 2026-12-09 15:05:00 → STL 2026-12-09 19:35:00; 1 stop(s) via IAD; 330 minutes. Local airport times.
    • UA4575: PHL 2026-12-09 15:05:00 → IAD 2026-12-09 16:18:00; layover at IAD: 102 minutes.
    • UA4527: IAD 2026-12-09 18:00:00 → STL 2026-12-09 19:35:00.
  • United Airlines UA3495 / UA4405: STL 2026-12-10 13:23:00 → PHL 2026-12-10 19:02:00; 1 stop(s) via IAD; 279 minutes. Local airport times.
    • UA3495: STL 2026-12-10 13:23:00 → IAD 2026-12-10 16:33:00; layover at IAD: 77 minutes.
    • UA4405: IAD 2026-12-10 17:50:00 → PHL 2026-12-10 19:02:00.

2026-12-09 → 2026-12-10 · $320.00

  • Delta Air Lines DL2968 / DL1371: PHL 2026-12-09 09:43:00 → STL 2026-12-09 13:30:00; 1 stop(s) via DTW; 287 minutes. Local airport times.
    • DL2968: PHL 2026-12-09 09:43:00 → DTW 2026-12-09 11:35:00; layover at DTW: 68 minutes.
    • DL1371: DTW 2026-12-09 12:43:00 → STL 2026-12-09 13:30:00.
  • Delta Air Lines DL2868 / DL1391: STL 2026-12-10 10:14:00 → PHL 2026-12-10 16:35:00; 1 stop(s) via DTW; 321 minutes. Local airport times.
    • DL2868: STL 2026-12-10 10:14:00 → DTW 2026-12-10 12:46:00; layover at DTW: 133 minutes.
    • DL1391: DTW 2026-12-10 14:59:00 → PHL 2026-12-10 16:35:00.

2026-12-09 → 2026-12-10 · $300.00

  • Southwest Airlines WN1424: PHL 2026-12-09 14:45:00 → STL 2026-12-09 16:20:00; nonstop; 155 minutes. Local airport times.
  • Southwest Airlines WN4923: STL 2026-12-10 19:55:00 → PHL 2026-12-10 23:05:00; nonstop; 130 minutes. Local airport times.

2026-12-09 → 2026-12-10 · $340.00

  • American Airlines AA5224: PHL 2026-12-09 18:40:00 → STL 2026-12-09 20:31:00; nonstop; 171 minutes. Local airport times.
  • American Airlines AA5477: STL 2026-12-10 13:17:00 → PHL 2026-12-10 16:33:00; nonstop; 136 minutes. Local airport times.

2026-12-09 → 2026-12-10 · $290.00

  • Southwest Airlines WN3372 / WN2737: PHL 2026-12-09 07:30:00 → STL 2026-12-09 12:40:00; 1 stop(s) via MDW; 370 minutes. Local airport times.
    • WN3372: PHL 2026-12-09 07:30:00 → MDW 2026-12-09 08:50:00; layover at MDW: 160 minutes.
    • WN2737: MDW 2026-12-09 11:30:00 → STL 2026-12-09 12:40:00.
  • Southwest Airlines WN4923: STL 2026-12-10 19:55:00 → PHL 2026-12-10 23:05:00; nonstop; 130 minutes. Local airport times.

2026-12-09 → 2026-12-10 · $320.00

  • American Airlines AA567 / AA2937: PHL 2026-12-09 15:06:00 → STL 2026-12-09 19:30:00; 1 stop(s) via CLT; 324 minutes. Local airport times.
    • AA567: PHL 2026-12-09 15:06:00 → CLT 2026-12-09 17:04:00; layover at CLT: 83 minutes.
    • AA2937: CLT 2026-12-09 18:27:00 → STL 2026-12-09 19:30:00.
  • American Airlines AA5477: STL 2026-12-10 13:17:00 → PHL 2026-12-10 16:33:00; nonstop; 136 minutes. Local airport times.

2026-12-09 → 2026-12-10 · $320.00

  • American Airlines AA3308 / AA4341: PHL 2026-12-09 07:35:00 → STL 2026-12-09 12:42:00; 1 stop(s) via BOS; 367 minutes. Local airport times.
    • AA3308: PHL 2026-12-09 07:35:00 → BOS 2026-12-09 09:04:00; layover at BOS: 75 minutes.
    • AA4341: BOS 2026-12-09 10:19:00 → STL 2026-12-09 12:42:00.
  • American Airlines AA5477: STL 2026-12-10 13:17:00 → PHL 2026-12-10 16:33:00; nonstop; 136 minutes. Local airport times.

More dates for this route