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Philadelphia → Saint Louis

Jan 21, 2027 · one way

PHL → STL1 adulteconomyOne way

10 flight options · 5 airlines

Nonstop flights

Thu, Jan 21 · One way

Southwest Airlines
2:45 pmPHL
2h 35m
Nonstop
4:20 pmSTL

One-way total · 1 adult · Taxes included

Thu, Jan 21 · One way

American Airlines
8:55 pmPHL
2h 47m
Nonstop
10:42 pmSTL

One-way total · 1 adult · Taxes included

Thu, Jan 21 · One way

Southwest Airlines
5:25 amPHL
2h 30m
Nonstop
6:55 amSTL

One-way total · 1 adult · Taxes included

Thu, Jan 21 · One way

American Airlines
10:05 amPHL
2h 44m
Nonstop
11:49 amSTL

One-way total · 1 adult · Taxes included

One-stop flights

Thu, Jan 21 · One way

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

One-way total · 1 adult · Taxes included

Thu, Jan 21 · One way

United Airlines
3:05 pmPHL
5h 30m
IAD · 1h 42m
7:35 pmSTL

One-way total · 1 adult · Taxes included

Thu, Jan 21 · One way

Delta Air Lines
9:43 amPHL
4h 47m
DTW · 1h 8m
1:30 pmSTL

One-way total · 1 adult · Taxes included

Thu, Jan 21 · One way

Southwest Airlines
7:30 amPHL
6h 10m
MDW · 2h 40m
12:40 pmSTL

One-way total · 1 adult · Taxes included

Thu, Jan 21 · One way

American Airlines
7:35 amPHL
6h 7m
BOS · 1h 15m
12:42 pmSTL

One-way total · 1 adult · Taxes included

Thu, Jan 21 · One way

American Airlines
3:06 pmPHL
5h 24m
CLT · 1h 23m
7:30 pmSTL

One-way 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
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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)
2027-01-21 · one waySouthwest AirlinesWN1424$147.252026-10-29T01:56:03Z
2027-01-21 · one wayAmerican AirlinesAA5536$166.252026-10-29T01:56:03Z
2027-01-21 · one wayFrontier AirlinesF91147 + F94473$90.252026-10-29T01:56:03Z
2027-01-21 · one wayUnited AirlinesUA4575 + UA4527$152.002026-10-29T01:56:03Z
2027-01-21 · one wayDelta Air LinesDL2968 + DL1371$156.752026-10-29T01:56:03Z
2027-01-21 · one waySouthwest AirlinesWN3375$147.252026-10-29T01:56:03Z
2027-01-21 · one wayAmerican AirlinesAA5105$166.252026-10-29T01:56:03Z
2027-01-21 · one waySouthwest AirlinesWN3372 + WN2737$137.752026-10-29T01:56:03Z
2027-01-21 · one wayAmerican AirlinesAA3308 + AA4341$147.252026-10-29T01:56:03Z
2027-01-21 · one wayAmerican AirlinesAA567 + AA2937$147.252026-10-29T01:56:03Z

2027-01-21 · one way · $147.25

  • Southwest Airlines WN1424: PHL 2027-01-21 14:45:00 → STL 2027-01-21 16:20:00; nonstop; 155 minutes. Local airport times.

2027-01-21 · one way · $166.25

  • American Airlines AA5536: PHL 2027-01-21 20:55:00 → STL 2027-01-21 22:42:00; nonstop; 167 minutes. Local airport times.

2027-01-21 · one way · $90.25

  • Frontier Airlines F91147 / F94473: PHL 2027-01-21 12:49:00 → STL 2027-01-21 17:42:00; 1 stop(s) via ATL; 353 minutes. Local airport times.
    • F91147: PHL 2027-01-21 12:49:00 → ATL 2027-01-21 15:19:00; layover at ATL: 90 minutes.
    • F94473: ATL 2027-01-21 16:49:00 → STL 2027-01-21 17:42:00.

2027-01-21 · one way · $152.00

  • United Airlines UA4575 / UA4527: PHL 2027-01-21 15:05:00 → STL 2027-01-21 19:35:00; 1 stop(s) via IAD; 330 minutes. Local airport times.
    • UA4575: PHL 2027-01-21 15:05:00 → IAD 2027-01-21 16:18:00; layover at IAD: 102 minutes.
    • UA4527: IAD 2027-01-21 18:00:00 → STL 2027-01-21 19:35:00.

2027-01-21 · one way · $156.75

  • Delta Air Lines DL2968 / DL1371: PHL 2027-01-21 09:43:00 → STL 2027-01-21 13:30:00; 1 stop(s) via DTW; 287 minutes. Local airport times.
    • DL2968: PHL 2027-01-21 09:43:00 → DTW 2027-01-21 11:35:00; layover at DTW: 68 minutes.
    • DL1371: DTW 2027-01-21 12:43:00 → STL 2027-01-21 13:30:00.

2027-01-21 · one way · $147.25

  • Southwest Airlines WN3375: PHL 2027-01-21 05:25:00 → STL 2027-01-21 06:55:00; nonstop; 150 minutes. Local airport times.

2027-01-21 · one way · $166.25

  • American Airlines AA5105: PHL 2027-01-21 10:05:00 → STL 2027-01-21 11:49:00; nonstop; 164 minutes. Local airport times.

2027-01-21 · one way · $137.75

  • Southwest Airlines WN3372 / WN2737: PHL 2027-01-21 07:30:00 → STL 2027-01-21 12:40:00; 1 stop(s) via MDW; 370 minutes. Local airport times.
    • WN3372: PHL 2027-01-21 07:30:00 → MDW 2027-01-21 08:50:00; layover at MDW: 160 minutes.
    • WN2737: MDW 2027-01-21 11:30:00 → STL 2027-01-21 12:40:00.

2027-01-21 · one way · $147.25

  • American Airlines AA3308 / AA4341: PHL 2027-01-21 07:35:00 → STL 2027-01-21 12:42:00; 1 stop(s) via BOS; 367 minutes. Local airport times.
    • AA3308: PHL 2027-01-21 07:35:00 → BOS 2027-01-21 09:04:00; layover at BOS: 75 minutes.
    • AA4341: BOS 2027-01-21 10:19:00 → STL 2027-01-21 12:42:00.

2027-01-21 · one way · $147.25

  • American Airlines AA567 / AA2937: PHL 2027-01-21 15:06:00 → STL 2027-01-21 19:30:00; 1 stop(s) via CLT; 324 minutes. Local airport times.
    • AA567: PHL 2027-01-21 15:06:00 → CLT 2027-01-21 17:04:00; layover at CLT: 83 minutes.
    • AA2937: CLT 2027-01-21 18:27:00 → STL 2027-01-21 19:30:00.

More dates for this route