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Saint Louis → Philadelphia

Dec 16, 2026 · return Dec 18, 2026

STL → PHL1 adulteconomyRound trip

9 flight options · 5 airlines

Nonstop flights

Wed, Dec 16 – Fri, Dec 18

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 16 – Fri, Dec 18

American Airlines
12:49 pmSTL
2h 13m
Nonstop
4:02 pmPHL
American Airlines
10:05 amPHL
2h 44m
Nonstop
11:49 amSTL

Round-trip total · 1 adult · Taxes included

Wed, Dec 16 – Fri, Dec 18

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

One-stop flights

Wed, Dec 16 – Fri, Dec 18

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 16 – Fri, Dec 18

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 16 – Fri, Dec 18

Delta Air Lines
10:06 amSTL
5h 38m
ATL · 2h 10m
4:44 pmPHL
Delta Air Lines
9:43 amPHL
4h 47m
DTW · 1h 8m
1:30 pmSTL

Round-trip total · 1 adult · Taxes included

Wed, Dec 16 – Fri, Dec 18

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 16 – Fri, Dec 18

American Airlines
12:19 pmSTL
2h 13m
Nonstop
3:32 pmPHL
American Airlines
3:06 pmPHL
5h 24m
CLT · 1h 23m
7:30 pmSTL

Round-trip total · 1 adult · Taxes included

Wed, Dec 16 – Fri, Dec 18

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

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 5, 2026 → Nov 8, 2026Nov 14, 2026 → Nov 21, 2026Nov 24, 2026 → Nov 29, 2026Dec 5, 2026 → Dec 12, 2026Dec 17, 2026 → Dec 20, 2026Dec 26, 2026 → Jan 2, 2027Jan 5, 2027 · One wayJan 16, 2027 → Jan 23, 2027Feb 5, 2027 → Feb 8, 2027Apr 3, 2027 → Apr 10, 2027Jun 26, 2027 → Jul 3, 2027Sep 17, 2027 → Sep 20, 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.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-16 → 2026-12-18Southwest AirlinesWN4922 / WN1424$330.002026-10-29T01:28:56Z
2026-12-16 → 2026-12-18American AirlinesAA5105 / AA5105$350.002026-10-29T01:28:56Z
2026-12-16 → 2026-12-18Frontier AirlinesF94474 + F92298 / F91147 + F94473$195.002026-10-29T01:28:56Z
2026-12-16 → 2026-12-18United AirlinesUA3495 + UA4405 / UA4575 + UA4527$325.002026-10-29T01:28:56Z
2026-12-16 → 2026-12-18Delta Air LinesDL1571 + DL1169 / DL2968 + DL1371$330.002026-10-29T01:28:56Z
2026-12-16 → 2026-12-18Southwest AirlinesWN4923 / WN1424$330.002026-10-29T01:28:56Z
2026-12-16 → 2026-12-18Southwest AirlinesWN4173 + WN1082 / WN1424$307.502026-10-29T01:28:56Z
2026-12-16 → 2026-12-18American AirlinesAA5105 / AA567 + AA2937$327.502026-10-29T01:28:56Z
2026-12-16 → 2026-12-18Delta Air LinesDL2868 + DL1391 / DL2968 + DL1371$330.002026-10-29T01:28:56Z

2026-12-16 → 2026-12-18 · $330.00

  • Southwest Airlines WN4922: STL 2026-12-16 10:40:00 → PHL 2026-12-16 13:50:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN1424: PHL 2026-12-18 14:45:00 → STL 2026-12-18 16:20:00; nonstop; 155 minutes. Local airport times.

2026-12-16 → 2026-12-18 · $350.00

  • American Airlines AA5105: STL 2026-12-16 12:49:00 → PHL 2026-12-16 16:02:00; nonstop; 133 minutes. Local airport times.
  • American Airlines AA5105: PHL 2026-12-18 10:05:00 → STL 2026-12-18 11:49:00; nonstop; 164 minutes. Local airport times.

2026-12-16 → 2026-12-18 · $195.00

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

2026-12-16 → 2026-12-18 · $325.00

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

2026-12-16 → 2026-12-18 · $330.00

  • Delta Air Lines DL1571 / DL1169: STL 2026-12-16 10:06:00 → PHL 2026-12-16 16:44:00; 1 stop(s) via ATL; 338 minutes. Local airport times.
    • DL1571: STL 2026-12-16 10:06:00 → ATL 2026-12-16 12:36:00; layover at ATL: 130 minutes.
    • DL1169: ATL 2026-12-16 14:46:00 → PHL 2026-12-16 16:44:00.
  • Delta Air Lines DL2968 / DL1371: PHL 2026-12-18 09:43:00 → STL 2026-12-18 13:30:00; 1 stop(s) via DTW; 287 minutes. Local airport times.
    • DL2968: PHL 2026-12-18 09:43:00 → DTW 2026-12-18 11:35:00; layover at DTW: 68 minutes.
    • DL1371: DTW 2026-12-18 12:43:00 → STL 2026-12-18 13:30:00.

2026-12-16 → 2026-12-18 · $330.00

  • Southwest Airlines WN4923: STL 2026-12-16 19:55:00 → PHL 2026-12-16 23:05:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN1424: PHL 2026-12-18 14:45:00 → STL 2026-12-18 16:20:00; nonstop; 155 minutes. Local airport times.

2026-12-16 → 2026-12-18 · $307.50

  • Southwest Airlines WN4173 / WN1082: STL 2026-12-16 05:30:00 → PHL 2026-12-16 10:45:00; 1 stop(s) via MDW; 255 minutes. Local airport times.
    • WN4173: STL 2026-12-16 05:30:00 → MDW 2026-12-16 06:35:00; layover at MDW: 70 minutes.
    • WN1082: MDW 2026-12-16 07:45:00 → PHL 2026-12-16 10:45:00.
  • Southwest Airlines WN1424: PHL 2026-12-18 14:45:00 → STL 2026-12-18 16:20:00; nonstop; 155 minutes. Local airport times.

2026-12-16 → 2026-12-18 · $327.50

  • American Airlines AA5105: STL 2026-12-16 12:19:00 → PHL 2026-12-16 15:32:00; nonstop; 133 minutes. Local airport times.
  • American Airlines AA567 / AA2937: PHL 2026-12-18 15:06:00 → STL 2026-12-18 19:30:00; 1 stop(s) via CLT; 324 minutes. Local airport times.
    • AA567: PHL 2026-12-18 15:06:00 → CLT 2026-12-18 17:04:00; layover at CLT: 83 minutes.
    • AA2937: CLT 2026-12-18 18:27:00 → STL 2026-12-18 19:30:00.

2026-12-16 → 2026-12-18 · $330.00

  • Delta Air Lines DL2868 / DL1391: STL 2026-12-16 10:14:00 → PHL 2026-12-16 16:35:00; 1 stop(s) via DTW; 321 minutes. Local airport times.
    • DL2868: STL 2026-12-16 10:14:00 → DTW 2026-12-16 12:46:00; layover at DTW: 133 minutes.
    • DL1391: DTW 2026-12-16 14:59:00 → PHL 2026-12-16 16:35:00.
  • Delta Air Lines DL2968 / DL1371: PHL 2026-12-18 09:43:00 → STL 2026-12-18 13:30:00; 1 stop(s) via DTW; 287 minutes. Local airport times.
    • DL2968: PHL 2026-12-18 09:43:00 → DTW 2026-12-18 11:35:00; layover at DTW: 68 minutes.
    • DL1371: DTW 2026-12-18 12:43:00 → STL 2026-12-18 13:30:00.

More dates for this route