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Route overview: Saint Louis to Philadelphia (PHL) flight deals

Saint Louis → Philadelphia

Dec 16, 2026 · return Dec 23, 2026

STL → PHL1 adulteconomyRound trip

10 flight options · 6 airlines

Nonstop flights

Wed, Dec 16 – Wed, Dec 23

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 16 – Wed, Dec 23

American Airlines
6:02 amSTL
2h 15m
Nonstop
9:17 amPHL
American Airlines
10:35 amPHL
2h 50m
Nonstop
12:25 pmSTL

Round-trip total · 1 adult · Taxes included

Wed, Dec 16 – Wed, Dec 23

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 – Wed, Dec 23

American Airlines
12:19 pmSTL
2h 13m
Nonstop
3:32 pmPHL
American Airlines
10:35 amPHL
2h 50m
Nonstop
12:25 pmSTL

Round-trip total · 1 adult · Taxes included

One-stop flights

Wed, Dec 16 – Wed, Dec 23

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 – Wed, Dec 23

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 – Wed, Dec 23

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 – Wed, Dec 23

Air Canada
4:05 pmSTL
5h 41m
YYZ · 2h 5m
10:46 pmPHL
Southwest Airlines
2:45 pmPHL
2h 35m
Nonstop
4:20 pmSTL

Round-trip total · 1 adult · Taxes included

Wed, Dec 16 – Wed, Dec 23

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 – Wed, Dec 23

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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Explore this route

All dates for this routeDec 15, 2026 → Dec 22, 2026Dec 17, 2026 → Dec 24, 2026
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: opening any fare on this page checks it live and shows the current bookable total for 1 adult. Check live prices for Saint Louis (STL) to Philadelphia (PHL), Dec 16, 2026 · return Dec 23, 2026

Route overview: Saint Louis to Philadelphia (PHL) flight deals

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-16 → 2026-12-23Southwest AirlinesWN4923 / WN1424$371.252026-10-29T01:28:56Z
2026-12-16 → 2026-12-23American AirlinesAA5450 / AA5073$393.752026-10-29T01:28:56Z
2026-12-16 → 2026-12-23Frontier AirlinesF94474 + F92298 / F91147 + F94473$219.382026-10-29T01:28:56Z
2026-12-16 → 2026-12-23United AirlinesUA3495 + UA4405 / UA4575 + UA4527$365.632026-10-29T01:28:56Z
2026-12-16 → 2026-12-23Delta Air LinesDL1571 + DL1169 / DL2968 + DL1371$371.252026-10-29T01:28:56Z
2026-12-16 → 2026-12-23Air Canada / Southwest AirlinesAC8890 + AC8520 / WN1424$433.752026-10-29T01:28:56Z
2026-12-16 → 2026-12-23Southwest AirlinesWN4922 / WN1424$371.252026-10-29T01:28:56Z
2026-12-16 → 2026-12-23American AirlinesAA5105 / AA5073$393.752026-10-29T01:28:56Z
2026-12-16 → 2026-12-23Southwest AirlinesWN4173 + WN1082 / WN1424$348.752026-10-29T01:28:56Z
2026-12-16 → 2026-12-23Delta Air LinesDL2868 + DL1391 / DL2968 + DL1371$371.252026-10-29T01:28:56Z

2026-12-16 → 2026-12-23 · $371.25

  • 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 2026-12-23 14:45:00 → STL 2026-12-23 16:20:00; nonstop; 155 minutes. Local airport times.

2026-12-16 → 2026-12-23 · $393.75

  • American Airlines AA5450: STL 2026-12-16 06:02:00 → PHL 2026-12-16 09:17:00; nonstop; 135 minutes. Local airport times.
  • American Airlines AA5073: PHL 2026-12-23 10:35:00 → STL 2026-12-23 12:25:00; nonstop; 170 minutes. Local airport times.

2026-12-16 → 2026-12-23 · $219.38

  • 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 2026-12-23 12:49:00 → STL 2026-12-23 17:42:00; 1 stop(s) via ATL; 353 minutes. Local airport times.
    • F91147: PHL 2026-12-23 12:49:00 → ATL 2026-12-23 15:19:00; layover at ATL: 90 minutes.
    • F94473: ATL 2026-12-23 16:49:00 → STL 2026-12-23 17:42:00.

2026-12-16 → 2026-12-23 · $365.63

  • 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 2026-12-23 15:05:00 → STL 2026-12-23 19:35:00; 1 stop(s) via IAD; 330 minutes. Local airport times.
    • UA4575: PHL 2026-12-23 15:05:00 → IAD 2026-12-23 16:18:00; layover at IAD: 102 minutes.
    • UA4527: IAD 2026-12-23 18:00:00 → STL 2026-12-23 19:35:00.

2026-12-16 → 2026-12-23 · $371.25

  • 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 2026-12-23 09:43:00 → STL 2026-12-23 13:30:00; 1 stop(s) via DTW; 287 minutes. Local airport times.
    • DL2968: PHL 2026-12-23 09:43:00 → DTW 2026-12-23 11:35:00; layover at DTW: 68 minutes.
    • DL1371: DTW 2026-12-23 12:43:00 → STL 2026-12-23 13:30:00.

2026-12-16 → 2026-12-23 · $433.75

  • Air Canada AC8890 / AC8520: STL 2026-12-16 16:05:00 → PHL 2026-12-16 22:46:00; 1 stop(s) via YYZ; 341 minutes. Local airport times.
    • AC8890: STL 2026-12-16 16:05:00 → YYZ 2026-12-16 19:05:00; layover at YYZ: 125 minutes.
    • AC8520: YYZ 2026-12-16 21:10:00 → PHL 2026-12-16 22:46:00.
  • Southwest Airlines WN1424: PHL 2026-12-23 14:45:00 → STL 2026-12-23 16:20:00; nonstop; 155 minutes. Local airport times.

2026-12-16 → 2026-12-23 · $371.25

  • 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 2026-12-23 14:45:00 → STL 2026-12-23 16:20:00; nonstop; 155 minutes. Local airport times.

2026-12-16 → 2026-12-23 · $393.75

  • 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 AA5073: PHL 2026-12-23 10:35:00 → STL 2026-12-23 12:25:00; nonstop; 170 minutes. Local airport times.

2026-12-16 → 2026-12-23 · $348.75

  • 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 2026-12-23 14:45:00 → STL 2026-12-23 16:20:00; nonstop; 155 minutes. Local airport times.

2026-12-16 → 2026-12-23 · $371.25

  • 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 2026-12-23 09:43:00 → STL 2026-12-23 13:30:00; 1 stop(s) via DTW; 287 minutes. Local airport times.
    • DL2968: PHL 2026-12-23 09:43:00 → DTW 2026-12-23 11:35:00; layover at DTW: 68 minutes.
    • DL1371: DTW 2026-12-23 12:43:00 → STL 2026-12-23 13:30:00.

Explore this route

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