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Saint Louis → Philadelphia

Dec 21, 2026 · one way

STL → PHL1 adulteconomyOne way

10 flight options · 6 airlines

Nonstop flights

Mon, Dec 21 · One way

Southwest Airlines
6:20 pmSTL
2h 10m
Nonstop
9:30 pmPHL

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

American Airlines
6:02 amSTL
2h 15m
Nonstop
9:17 amPHL

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

Southwest Airlines
10:40 amSTL
2h 10m
Nonstop
1:50 pmPHL

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

American Airlines
12:19 pmSTL
2h 13m
Nonstop
3:32 pmPHL

One-way total · 1 adult · Taxes included

One-stop flights

Mon, Dec 21 · One way

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

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

United Airlines
1:23 pmSTL
4h 39m
IAD · 1h 17m
7:02 pmPHL

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

Delta Air Lines
10:14 amSTL
5h 21m
DTW · 2h 13m
4:35 pmPHL

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

Air Canada
4:05 pmSTL
5h 41m
YYZ · 2h 5m
10:46 pmPHL

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

Southwest Airlines
5:30 amSTL
4h 15m
MDW · 1h 10m
10:45 amPHL

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

Delta Air Lines
10:06 amSTL
5h 38m
ATL · 2h 10m
4:44 pmPHL

One-way 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
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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)
2026-12-21 · one waySouthwest AirlinesWN4923$218.752026-10-29T01:28:56Z
2026-12-21 · one wayAmerican AirlinesAA5450$231.252026-10-29T01:28:56Z
2026-12-21 · one wayFrontier AirlinesF94474 + F92298$131.252026-10-29T01:28:56Z
2026-12-21 · one wayUnited AirlinesUA3495 + UA4405$212.502026-10-29T01:28:56Z
2026-12-21 · one wayDelta Air LinesDL2868 + DL1391$218.752026-10-29T01:28:56Z
2026-12-21 · one wayAir CanadaAC8890 + AC8520$306.252026-10-29T01:28:56Z
2026-12-21 · one waySouthwest AirlinesWN4922$218.752026-10-29T01:28:56Z
2026-12-21 · one wayAmerican AirlinesAA5105$231.252026-10-29T01:28:56Z
2026-12-21 · one waySouthwest AirlinesWN4173 + WN1082$187.502026-10-29T01:28:56Z
2026-12-21 · one wayDelta Air LinesDL1571 + DL1169$218.752026-10-29T01:28:56Z

2026-12-21 · one way · $218.75

  • Southwest Airlines WN4923: STL 2026-12-21 18:20:00 → PHL 2026-12-21 21:30:00; nonstop; 130 minutes. Local airport times.

2026-12-21 · one way · $231.25

  • American Airlines AA5450: STL 2026-12-21 06:02:00 → PHL 2026-12-21 09:17:00; nonstop; 135 minutes. Local airport times.

2026-12-21 · one way · $131.25

  • Frontier Airlines F94474 / F92298: STL 2026-12-21 12:02:00 → PHL 2026-12-21 18:32:00; 1 stop(s) via ATL; 330 minutes. Local airport times.
    • F94474: STL 2026-12-21 12:02:00 → ATL 2026-12-21 14:42:00; layover at ATL: 102 minutes.
    • F92298: ATL 2026-12-21 16:24:00 → PHL 2026-12-21 18:32:00.

2026-12-21 · one way · $212.50

  • United Airlines UA3495 / UA4405: STL 2026-12-21 13:23:00 → PHL 2026-12-21 19:02:00; 1 stop(s) via IAD; 279 minutes. Local airport times.
    • UA3495: STL 2026-12-21 13:23:00 → IAD 2026-12-21 16:33:00; layover at IAD: 77 minutes.
    • UA4405: IAD 2026-12-21 17:50:00 → PHL 2026-12-21 19:02:00.

2026-12-21 · one way · $218.75

  • Delta Air Lines DL2868 / DL1391: STL 2026-12-21 10:14:00 → PHL 2026-12-21 16:35:00; 1 stop(s) via DTW; 321 minutes. Local airport times.
    • DL2868: STL 2026-12-21 10:14:00 → DTW 2026-12-21 12:46:00; layover at DTW: 133 minutes.
    • DL1391: DTW 2026-12-21 14:59:00 → PHL 2026-12-21 16:35:00.

2026-12-21 · one way · $306.25

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

2026-12-21 · one way · $218.75

  • Southwest Airlines WN4922: STL 2026-12-21 10:40:00 → PHL 2026-12-21 13:50:00; nonstop; 130 minutes. Local airport times.

2026-12-21 · one way · $231.25

  • American Airlines AA5105: STL 2026-12-21 12:19:00 → PHL 2026-12-21 15:32:00; nonstop; 133 minutes. Local airport times.

2026-12-21 · one way · $187.50

  • Southwest Airlines WN4173 / WN1082: STL 2026-12-21 05:30:00 → PHL 2026-12-21 10:45:00; 1 stop(s) via MDW; 255 minutes. Local airport times.
    • WN4173: STL 2026-12-21 05:30:00 → MDW 2026-12-21 06:35:00; layover at MDW: 70 minutes.
    • WN1082: MDW 2026-12-21 07:45:00 → PHL 2026-12-21 10:45:00.

2026-12-21 · one way · $218.75

  • Delta Air Lines DL1571 / DL1169: STL 2026-12-21 10:06:00 → PHL 2026-12-21 16:44:00; 1 stop(s) via ATL; 338 minutes. Local airport times.
    • DL1571: STL 2026-12-21 10:06:00 → ATL 2026-12-21 12:36:00; layover at ATL: 130 minutes.
    • DL1169: ATL 2026-12-21 14:46:00 → PHL 2026-12-21 16:44:00.

More dates for this route