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Saint Louis → Philadelphia

Dec 2, 2026 · return Dec 3, 2026

STL → PHL1 adulteconomyRound trip

10 flight options · 5 airlines

Nonstop flights

Wed, Dec 2 – Thu, Dec 3

Southwest Airlines
10:40 amSTL
2h 10m
Nonstop
1:50 pmPHL
Southwest Airlines
2:45 pmPHL
2h 35m
Nonstop
4:20 pmSTL

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Thu, Dec 3

American Airlines
12:19 pmSTL
2h 13m
Nonstop
3:32 pmPHL
American Airlines
8:55 pmPHL
2h 47m
Nonstop
10:42 pmSTL

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Thu, Dec 3

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

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Thu, Dec 3

American Airlines
6:02 amSTL
2h 15m
Nonstop
9:17 amPHL
American Airlines
8:55 pmPHL
2h 47m
Nonstop
10:42 pmSTL

Round-trip total · 1 adult · Taxes included

One-stop flights

Wed, Dec 2 – Thu, Dec 3

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

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Thu, Dec 3

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

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Thu, Dec 3

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

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Thu, Dec 3

Southwest Airlines
5:30 amSTL
4h 15m
MDW · 1h 10m
10:45 amPHL
Southwest Airlines
2:45 pmPHL
2h 35m
Nonstop
4:20 pmSTL

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Thu, Dec 3

Southwest Airlines
8:10 pmSTL
2h 10m
Nonstop
11:20 pmPHL
Southwest Airlines
7:30 amPHL
6h 10m
MDW · 2h 40m
12:40 pmSTL

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Thu, Dec 3

American Airlines
12:49 pmSTL
2h 13m
Nonstop
4:02 pmPHL
American Airlines
7:35 amPHL
6h 7m
BOS · 1h 15m
12:42 pmSTL

Round-trip total · 1 adult · Taxes included

Make this trip yours

STL ⇄ PHL

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)
2026-12-02 → 2026-12-03Southwest AirlinesWN4922 / WN1424$330.002026-10-29T01:28:56Z
2026-12-02 → 2026-12-03American AirlinesAA5105 / AA5536$350.002026-10-29T01:28:56Z
2026-12-02 → 2026-12-03Frontier AirlinesF94474 + F92298 / F91147 + F94473$195.002026-10-29T01:28:56Z
2026-12-02 → 2026-12-03United AirlinesUA3495 + UA4405 / UA4575 + UA4527$325.002026-10-29T01:28:56Z
2026-12-02 → 2026-12-03Delta Air LinesDL2868 + DL1391 / DL2968 + DL1371$330.002026-10-29T01:28:56Z
2026-12-02 → 2026-12-03Southwest AirlinesWN4923 / WN1424$330.002026-10-29T01:28:56Z
2026-12-02 → 2026-12-03American AirlinesAA5450 / AA5536$350.002026-10-29T01:28:56Z
2026-12-02 → 2026-12-03Southwest AirlinesWN4173 + WN1082 / WN1424$307.502026-10-29T01:28:56Z
2026-12-02 → 2026-12-03Southwest AirlinesWN4923 / WN3372 + WN2737$307.502026-10-29T01:28:56Z
2026-12-02 → 2026-12-03American AirlinesAA5105 / AA3308 + AA4341$327.502026-10-29T01:28:56Z

2026-12-02 → 2026-12-03 · $330.00

  • Southwest Airlines WN4922: STL 2026-12-02 10:40:00 → PHL 2026-12-02 13:50:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN1424: PHL 2026-12-03 14:45:00 → STL 2026-12-03 16:20:00; nonstop; 155 minutes. Local airport times.

2026-12-02 → 2026-12-03 · $350.00

  • American Airlines AA5105: STL 2026-12-02 12:19:00 → PHL 2026-12-02 15:32:00; nonstop; 133 minutes. Local airport times.
  • American Airlines AA5536: PHL 2026-12-03 20:55:00 → STL 2026-12-03 22:42:00; nonstop; 167 minutes. Local airport times.

2026-12-02 → 2026-12-03 · $195.00

  • Frontier Airlines F94474 / F92298: STL 2026-12-02 12:02:00 → PHL 2026-12-02 18:32:00; 1 stop(s) via ATL; 330 minutes. Local airport times.
    • F94474: STL 2026-12-02 12:02:00 → ATL 2026-12-02 14:42:00; layover at ATL: 102 minutes.
    • F92298: ATL 2026-12-02 16:24:00 → PHL 2026-12-02 18:32:00.
  • Frontier Airlines F91147 / F94473: PHL 2026-12-03 12:49:00 → STL 2026-12-03 17:42:00; 1 stop(s) via ATL; 353 minutes. Local airport times.
    • F91147: PHL 2026-12-03 12:49:00 → ATL 2026-12-03 15:19:00; layover at ATL: 90 minutes.
    • F94473: ATL 2026-12-03 16:49:00 → STL 2026-12-03 17:42:00.

2026-12-02 → 2026-12-03 · $325.00

  • United Airlines UA3495 / UA4405: STL 2026-12-02 13:23:00 → PHL 2026-12-02 19:02:00; 1 stop(s) via IAD; 279 minutes. Local airport times.
    • UA3495: STL 2026-12-02 13:23:00 → IAD 2026-12-02 16:33:00; layover at IAD: 77 minutes.
    • UA4405: IAD 2026-12-02 17:50:00 → PHL 2026-12-02 19:02:00.
  • United Airlines UA4575 / UA4527: PHL 2026-12-03 15:05:00 → STL 2026-12-03 19:35:00; 1 stop(s) via IAD; 330 minutes. Local airport times.
    • UA4575: PHL 2026-12-03 15:05:00 → IAD 2026-12-03 16:18:00; layover at IAD: 102 minutes.
    • UA4527: IAD 2026-12-03 18:00:00 → STL 2026-12-03 19:35:00.

2026-12-02 → 2026-12-03 · $330.00

  • Delta Air Lines DL2868 / DL1391: STL 2026-12-02 10:14:00 → PHL 2026-12-02 16:35:00; 1 stop(s) via DTW; 321 minutes. Local airport times.
    • DL2868: STL 2026-12-02 10:14:00 → DTW 2026-12-02 12:46:00; layover at DTW: 133 minutes.
    • DL1391: DTW 2026-12-02 14:59:00 → PHL 2026-12-02 16:35:00.
  • Delta Air Lines DL2968 / DL1371: PHL 2026-12-03 09:43:00 → STL 2026-12-03 13:30:00; 1 stop(s) via DTW; 287 minutes. Local airport times.
    • DL2968: PHL 2026-12-03 09:43:00 → DTW 2026-12-03 11:35:00; layover at DTW: 68 minutes.
    • DL1371: DTW 2026-12-03 12:43:00 → STL 2026-12-03 13:30:00.

2026-12-02 → 2026-12-03 · $330.00

  • Southwest Airlines WN4923: STL 2026-12-02 19:55:00 → PHL 2026-12-02 23:05:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN1424: PHL 2026-12-03 14:45:00 → STL 2026-12-03 16:20:00; nonstop; 155 minutes. Local airport times.

2026-12-02 → 2026-12-03 · $350.00

  • American Airlines AA5450: STL 2026-12-02 06:02:00 → PHL 2026-12-02 09:17:00; nonstop; 135 minutes. Local airport times.
  • American Airlines AA5536: PHL 2026-12-03 20:55:00 → STL 2026-12-03 22:42:00; nonstop; 167 minutes. Local airport times.

2026-12-02 → 2026-12-03 · $307.50

  • Southwest Airlines WN4173 / WN1082: STL 2026-12-02 05:30:00 → PHL 2026-12-02 10:45:00; 1 stop(s) via MDW; 255 minutes. Local airport times.
    • WN4173: STL 2026-12-02 05:30:00 → MDW 2026-12-02 06:35:00; layover at MDW: 70 minutes.
    • WN1082: MDW 2026-12-02 07:45:00 → PHL 2026-12-02 10:45:00.
  • Southwest Airlines WN1424: PHL 2026-12-03 14:45:00 → STL 2026-12-03 16:20:00; nonstop; 155 minutes. Local airport times.

2026-12-02 → 2026-12-03 · $307.50

  • Southwest Airlines WN4923: STL 2026-12-02 20:10:00 → PHL 2026-12-02 23:20:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN3372 / WN2737: PHL 2026-12-03 07:30:00 → STL 2026-12-03 12:40:00; 1 stop(s) via MDW; 370 minutes. Local airport times.
    • WN3372: PHL 2026-12-03 07:30:00 → MDW 2026-12-03 08:50:00; layover at MDW: 160 minutes.
    • WN2737: MDW 2026-12-03 11:30:00 → STL 2026-12-03 12:40:00.

2026-12-02 → 2026-12-03 · $327.50

  • American Airlines AA5105: STL 2026-12-02 12:49:00 → PHL 2026-12-02 16:02:00; nonstop; 133 minutes. Local airport times.
  • American Airlines AA3308 / AA4341: PHL 2026-12-03 07:35:00 → STL 2026-12-03 12:42:00; 1 stop(s) via BOS; 367 minutes. Local airport times.
    • AA3308: PHL 2026-12-03 07:35:00 → BOS 2026-12-03 09:04:00; layover at BOS: 75 minutes.
    • AA4341: BOS 2026-12-03 10:19:00 → STL 2026-12-03 12:42:00.

More dates for this route