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

Saint Louis → Philadelphia

May 4, 2027 · choose your return date

STL → PHL1 adulteconomyOne way and round trips

30 flight options · 3 airlines

Choose your return date

One-way flights and round trips by duration. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

May 2027

May 4, 2027 · One waySouthwest AirlinesNonstop$200.00 May 4, 2027 · One wayDelta Air LinesUp to 1 stop each way$200.00 May 4, 2027 – May 5, 2027 · 1 nightSouthwest AirlinesNonstop$380.00 May 4, 2027 – May 5, 2027 · 1 nightDelta Air LinesUp to 1 stop each way$380.00 May 4, 2027 – May 6, 2027 · 2 nightsSouthwest AirlinesNonstop$380.00 May 4, 2027 – May 6, 2027 · 2 nightsDelta Air LinesUp to 1 stop each way$380.00 May 4, 2027 – May 7, 2027 · 3 nightsAmerican AirlinesUp to 1 stop each way$372.50 May 4, 2027 – May 7, 2027 · 3 nightsSouthwest AirlinesNonstop$380.00 May 4, 2027 – May 8, 2027 · 4 nightsSouthwest AirlinesNonstop$380.00 May 4, 2027 – May 8, 2027 · 4 nightsDelta Air LinesUp to 1 stop each way$380.00 May 4, 2027 – May 9, 2027 · 5 nightsSouthwest AirlinesNonstop$380.00 May 4, 2027 – May 9, 2027 · 5 nightsDelta Air LinesUp to 1 stop each way$380.00 May 4, 2027 – May 10, 2027 · 6 nightsSouthwest AirlinesNonstop$380.00 May 4, 2027 – May 10, 2027 · 6 nightsDelta Air LinesUp to 1 stop each way$380.00 May 4, 2027 – May 11, 2027 · 7 nightsSouthwest AirlinesNonstop$380.00 May 4, 2027 – May 11, 2027 · 7 nightsDelta Air LinesUp to 1 stop each way$380.00 May 4, 2027 – May 12, 2027 · 8 nightsSouthwest AirlinesNonstop$380.00 May 4, 2027 – May 12, 2027 · 8 nightsDelta Air LinesUp to 1 stop each way$380.00 May 4, 2027 – May 13, 2027 · 9 nightsSouthwest AirlinesNonstop$380.00 May 4, 2027 – May 13, 2027 · 9 nightsDelta Air LinesUp to 1 stop each way$380.00 May 4, 2027 – May 14, 2027 · 10 nightsAmerican AirlinesUp to 1 stop each way$372.50 May 4, 2027 – May 14, 2027 · 10 nightsSouthwest AirlinesNonstop$380.00 May 4, 2027 – May 15, 2027 · 11 nightsSouthwest AirlinesNonstop$380.00 May 4, 2027 – May 15, 2027 · 11 nightsDelta Air LinesUp to 1 stop each way$380.00 May 4, 2027 – May 16, 2027 · 12 nightsSouthwest AirlinesNonstop$380.00 May 4, 2027 – May 16, 2027 · 12 nightsDelta Air LinesUp to 1 stop each way$380.00 May 4, 2027 – May 17, 2027 · 13 nightsSouthwest AirlinesNonstop$380.00 May 4, 2027 – May 17, 2027 · 13 nightsDelta Air LinesUp to 1 stop each way$380.00 May 4, 2027 – May 18, 2027 · 14 nightsSouthwest AirlinesNonstop$380.00 May 4, 2027 – May 18, 2027 · 14 nightsDelta Air LinesUp to 1 stop each way$380.00

Flights for your trip

  1. Tue, May 4 · One way

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

    One-way total · 1 adult · Taxes included

  2. Tue, May 4 · One way

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

    One-way total · 1 adult · Taxes included

  3. Tue, May 4 – Wed, May 5

    Southwest Airlines
    6:20 pmSTL
    2h 10m
    Nonstop
    9:30 pmPHL
    Southwest Airlines
    2:45 pmPHL
    2h 35m
    Nonstop
    4:20 pmSTL

    Round-trip total · 1 adult · Taxes included

  4. Tue, May 4 – Wed, May 5

    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

  5. Tue, May 4 – Thu, May 6

    Southwest Airlines
    6:20 pmSTL
    2h 10m
    Nonstop
    9:30 pmPHL
    Southwest Airlines
    2:45 pmPHL
    2h 35m
    Nonstop
    4:20 pmSTL

    Round-trip total · 1 adult · Taxes included

  6. Tue, May 4 – Thu, May 6

    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

  7. Tue, May 4 – Fri, May 7

    American Airlines
    1:15 pmSTL
    2h 15m
    Nonstop
    4:30 pmPHL
    American Airlines
    3:06 pmPHL
    5h 24m
    CLT · 1h 23m
    7:30 pmSTL

    Round-trip total · 1 adult · Taxes included

  8. Tue, May 4 – Fri, May 7

    Southwest Airlines
    6:20 pmSTL
    2h 10m
    Nonstop
    9:30 pmPHL
    Southwest Airlines
    2:45 pmPHL
    2h 35m
    Nonstop
    4:20 pmSTL

    Round-trip total · 1 adult · Taxes included

  9. Tue, May 4 – Sat, May 8

    Southwest Airlines
    6:20 pmSTL
    2h 10m
    Nonstop
    9:30 pmPHL
    Southwest Airlines
    5:25 amPHL
    2h 30m
    Nonstop
    6:55 amSTL

    Round-trip total · 1 adult · Taxes included

  10. Tue, May 4 – Sat, May 8

    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

  11. Tue, May 4 – Mon, May 10

    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

  12. Tue, May 4 – Mon, May 10

    Southwest Airlines
    6:20 pmSTL
    2h 10m
    Nonstop
    9:30 pmPHL
    Southwest Airlines
    5:25 amPHL
    2h 30m
    Nonstop
    6:55 amSTL

    Round-trip total · 1 adult · Taxes included

  13. Tue, May 4 – Tue, May 11

    Southwest Airlines
    6:20 pmSTL
    2h 10m
    Nonstop
    9:30 pmPHL
    Southwest Airlines
    5:25 amPHL
    2h 30m
    Nonstop
    6:55 amSTL

    Round-trip total · 1 adult · Taxes included

  14. Tue, May 4 – Tue, May 11

    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

  15. Tue, May 4 – Wed, May 12

    Southwest Airlines
    6:20 pmSTL
    2h 10m
    Nonstop
    9:30 pmPHL
    Southwest Airlines
    2:45 pmPHL
    2h 35m
    Nonstop
    4:20 pmSTL

    Round-trip total · 1 adult · Taxes included

  16. Tue, May 4 – Wed, May 12

    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

  17. Tue, May 4 – Fri, May 14

    American Airlines
    1:15 pmSTL
    2h 15m
    Nonstop
    4:30 pmPHL
    American Airlines
    3:06 pmPHL
    5h 24m
    CLT · 1h 23m
    7:30 pmSTL

    Round-trip total · 1 adult · Taxes included

  18. Tue, May 4 – Fri, May 14

    Southwest Airlines
    6:20 pmSTL
    2h 10m
    Nonstop
    9:30 pmPHL
    Southwest Airlines
    2:45 pmPHL
    2h 35m
    Nonstop
    4:20 pmSTL

    Round-trip total · 1 adult · Taxes included

  19. Tue, May 4 – Sat, May 15

    Southwest Airlines
    6:20 pmSTL
    2h 10m
    Nonstop
    9:30 pmPHL
    Southwest Airlines
    5:25 amPHL
    2h 30m
    Nonstop
    6:55 amSTL

    Round-trip total · 1 adult · Taxes included

  20. Tue, May 4 – Sat, May 15

    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

  21. Tue, May 4 – Sun, May 16

    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

  22. Tue, May 4 – Sun, May 16

    Southwest Airlines
    6:20 pmSTL
    2h 10m
    Nonstop
    9:30 pmPHL
    Southwest Airlines
    5:25 amPHL
    2h 30m
    Nonstop
    6:55 amSTL

    Round-trip total · 1 adult · Taxes included

  23. Tue, May 4 – Tue, May 18

    Southwest Airlines
    6:20 pmSTL
    2h 10m
    Nonstop
    9:30 pmPHL
    Southwest Airlines
    5:25 amPHL
    2h 30m
    Nonstop
    6:55 amSTL

    Round-trip total · 1 adult · Taxes included

  24. Tue, May 4 – Tue, May 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

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STL ⇄ PHL

Economy

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Explore this route

All dates for this routeMay 3, 2027 · Return optionsMay 5, 2027 · Return optionsHotels in Philadelphia with Axel
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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.

Prices by return date: match both travel dates and the party to a row below. Each total is for that exact trip, issued at the time shown. To book or select flights, follow that row's price link; it keeps the exact dates and travelers.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2027-05-04 · one waySouthwest AirlinesWN4923Axel-exclusive $200.002026-10-29T01:28:56Z
2027-05-04 · one wayDelta Air LinesDL1571 + DL1169Axel-exclusive $200.002026-10-29T01:28:56Z
2027-05-04 → 2027-05-05Southwest AirlinesWN4923 / WN1424Axel-exclusive $380.002026-10-29T01:28:56Z
2027-05-04 → 2027-05-05Delta Air LinesDL1571 + DL1169 / DL2968 + DL1371Axel-exclusive $380.002026-10-29T01:28:56Z
2027-05-04 → 2027-05-06Southwest AirlinesWN4923 / WN1424Axel-exclusive $380.002026-10-29T01:28:56Z
2027-05-04 → 2027-05-06Delta Air LinesDL1571 + DL1169 / DL2968 + DL1371Axel-exclusive $380.002026-10-29T01:28:56Z
2027-05-04 → 2027-05-07Southwest AirlinesWN4923 / WN1424Axel-exclusive $380.002026-10-29T01:28:56Z
2027-05-04 → 2027-05-07American AirlinesAA4796 / AA567 + AA2937Axel-exclusive $372.502026-10-29T01:28:56Z
2027-05-04 → 2027-05-08Southwest AirlinesWN4923 / WN3375Axel-exclusive $380.002026-10-29T01:28:56Z
2027-05-04 → 2027-05-08Delta Air LinesDL1571 + DL1169 / DL2968 + DL1371Axel-exclusive $380.002026-10-29T01:28:56Z
2027-05-04 → 2027-05-09Southwest AirlinesWN4923 / WN3375Axel-exclusive $380.002026-10-29T01:28:56Z
2027-05-04 → 2027-05-09Delta Air LinesDL1571 + DL1169 / DL2968 + DL1371Axel-exclusive $380.002026-10-29T01:28:56Z
2027-05-04 → 2027-05-10Southwest AirlinesWN4923 / WN3375Axel-exclusive $380.002026-10-29T01:28:56Z
2027-05-04 → 2027-05-10Delta Air LinesDL1571 + DL1169 / DL2968 + DL1371Axel-exclusive $380.002026-10-29T01:28:56Z
2027-05-04 → 2027-05-11Southwest AirlinesWN4923 / WN3375Axel-exclusive $380.002026-10-29T01:28:56Z
2027-05-04 → 2027-05-11Delta Air LinesDL1571 + DL1169 / DL2968 + DL1371Axel-exclusive $380.002026-10-29T01:28:56Z
2027-05-04 → 2027-05-12Southwest AirlinesWN4923 / WN1424Axel-exclusive $380.002026-10-29T01:28:56Z
2027-05-04 → 2027-05-12Delta Air LinesDL1571 + DL1169 / DL2968 + DL1371Axel-exclusive $380.002026-10-29T01:28:56Z
2027-05-04 → 2027-05-13Southwest AirlinesWN4923 / WN1424Axel-exclusive $380.002026-10-29T01:28:56Z
2027-05-04 → 2027-05-13Delta Air LinesDL1571 + DL1169 / DL2968 + DL1371Axel-exclusive $380.002026-10-29T01:28:56Z
2027-05-04 → 2027-05-14Southwest AirlinesWN4923 / WN1424Axel-exclusive $380.002026-10-29T01:28:56Z
2027-05-04 → 2027-05-14American AirlinesAA4796 / AA567 + AA2937Axel-exclusive $372.502026-10-29T01:28:56Z
2027-05-04 → 2027-05-15Southwest AirlinesWN4923 / WN3375Axel-exclusive $380.002026-10-29T01:28:56Z
2027-05-04 → 2027-05-15Delta Air LinesDL1571 + DL1169 / DL2968 + DL1371Axel-exclusive $380.002026-10-29T01:28:56Z
2027-05-04 → 2027-05-16Southwest AirlinesWN4923 / WN3375Axel-exclusive $380.002026-10-29T01:28:56Z
2027-05-04 → 2027-05-16Delta Air LinesDL1571 + DL1169 / DL2968 + DL1371Axel-exclusive $380.002026-10-29T01:28:56Z
2027-05-04 → 2027-05-17Southwest AirlinesWN4923 / WN3375Axel-exclusive $380.002026-10-29T01:28:56Z
2027-05-04 → 2027-05-17Delta Air LinesDL1571 + DL1169 / DL2968 + DL1371Axel-exclusive $380.002026-10-29T01:28:56Z
2027-05-04 → 2027-05-18Southwest AirlinesWN4923 / WN3375Axel-exclusive $380.002026-10-29T01:28:56Z
2027-05-04 → 2027-05-18Delta Air LinesDL1571 + DL1169 / DL2968 + DL1371Axel-exclusive $380.002026-10-29T01:28:56Z

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

2027-05-04 · one way · Axel-exclusive $200.00

  • Southwest Airlines WN4923: STL 2027-05-04 18:20:00 → PHL 2027-05-04 21:30:00; nonstop; 130 minutes. Local airport times.

2027-05-04 · one way · Axel-exclusive $200.00

  • Delta Air Lines DL1571 / DL1169: STL 2027-05-04 10:06:00 → PHL 2027-05-04 16:44:00; 1 stop(s) via ATL; 338 minutes. Local airport times.
    • DL1571: STL 2027-05-04 10:06:00 → ATL 2027-05-04 12:36:00; layover at ATL: 130 minutes.
    • DL1169: ATL 2027-05-04 14:46:00 → PHL 2027-05-04 16:44:00.

2027-05-04 → 2027-05-05 · Axel-exclusive $380.00

  • Southwest Airlines WN4923: STL 2027-05-04 18:20:00 → PHL 2027-05-04 21:30:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN1424: PHL 2027-05-05 14:45:00 → STL 2027-05-05 16:20:00; nonstop; 155 minutes. Local airport times.

2027-05-04 → 2027-05-05 · Axel-exclusive $380.00

  • Delta Air Lines DL1571 / DL1169: STL 2027-05-04 10:06:00 → PHL 2027-05-04 16:44:00; 1 stop(s) via ATL; 338 minutes. Local airport times.
    • DL1571: STL 2027-05-04 10:06:00 → ATL 2027-05-04 12:36:00; layover at ATL: 130 minutes.
    • DL1169: ATL 2027-05-04 14:46:00 → PHL 2027-05-04 16:44:00.
  • Delta Air Lines DL2968 / DL1371: PHL 2027-05-05 09:43:00 → STL 2027-05-05 13:30:00; 1 stop(s) via DTW; 287 minutes. Local airport times.
    • DL2968: PHL 2027-05-05 09:43:00 → DTW 2027-05-05 11:35:00; layover at DTW: 68 minutes.
    • DL1371: DTW 2027-05-05 12:43:00 → STL 2027-05-05 13:30:00.

2027-05-04 → 2027-05-06 · Axel-exclusive $380.00

  • Southwest Airlines WN4923: STL 2027-05-04 18:20:00 → PHL 2027-05-04 21:30:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN1424: PHL 2027-05-06 14:45:00 → STL 2027-05-06 16:20:00; nonstop; 155 minutes. Local airport times.

2027-05-04 → 2027-05-06 · Axel-exclusive $380.00

  • Delta Air Lines DL1571 / DL1169: STL 2027-05-04 10:06:00 → PHL 2027-05-04 16:44:00; 1 stop(s) via ATL; 338 minutes. Local airport times.
    • DL1571: STL 2027-05-04 10:06:00 → ATL 2027-05-04 12:36:00; layover at ATL: 130 minutes.
    • DL1169: ATL 2027-05-04 14:46:00 → PHL 2027-05-04 16:44:00.
  • Delta Air Lines DL2968 / DL1371: PHL 2027-05-06 09:43:00 → STL 2027-05-06 13:30:00; 1 stop(s) via DTW; 287 minutes. Local airport times.
    • DL2968: PHL 2027-05-06 09:43:00 → DTW 2027-05-06 11:35:00; layover at DTW: 68 minutes.
    • DL1371: DTW 2027-05-06 12:43:00 → STL 2027-05-06 13:30:00.

2027-05-04 → 2027-05-07 · Axel-exclusive $372.50

  • American Airlines AA4796: STL 2027-05-04 13:15:00 → PHL 2027-05-04 16:30:00; nonstop; 135 minutes. Local airport times.
  • American Airlines AA567 / AA2937: PHL 2027-05-07 15:06:00 → STL 2027-05-07 19:30:00; 1 stop(s) via CLT; 324 minutes. Local airport times.
    • AA567: PHL 2027-05-07 15:06:00 → CLT 2027-05-07 17:04:00; layover at CLT: 83 minutes.
    • AA2937: CLT 2027-05-07 18:27:00 → STL 2027-05-07 19:30:00.

2027-05-04 → 2027-05-07 · Axel-exclusive $380.00

  • Southwest Airlines WN4923: STL 2027-05-04 18:20:00 → PHL 2027-05-04 21:30:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN1424: PHL 2027-05-07 14:45:00 → STL 2027-05-07 16:20:00; nonstop; 155 minutes. Local airport times.

2027-05-04 → 2027-05-08 · Axel-exclusive $380.00

  • Southwest Airlines WN4923: STL 2027-05-04 18:20:00 → PHL 2027-05-04 21:30:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN3375: PHL 2027-05-08 05:25:00 → STL 2027-05-08 06:55:00; nonstop; 150 minutes. Local airport times.

2027-05-04 → 2027-05-08 · Axel-exclusive $380.00

  • Delta Air Lines DL1571 / DL1169: STL 2027-05-04 10:06:00 → PHL 2027-05-04 16:44:00; 1 stop(s) via ATL; 338 minutes. Local airport times.
    • DL1571: STL 2027-05-04 10:06:00 → ATL 2027-05-04 12:36:00; layover at ATL: 130 minutes.
    • DL1169: ATL 2027-05-04 14:46:00 → PHL 2027-05-04 16:44:00.
  • Delta Air Lines DL2968 / DL1371: PHL 2027-05-08 09:43:00 → STL 2027-05-08 13:30:00; 1 stop(s) via DTW; 287 minutes. Local airport times.
    • DL2968: PHL 2027-05-08 09:43:00 → DTW 2027-05-08 11:35:00; layover at DTW: 68 minutes.
    • DL1371: DTW 2027-05-08 12:43:00 → STL 2027-05-08 13:30:00.

2027-05-04 → 2027-05-10 · Axel-exclusive $380.00

  • Delta Air Lines DL1571 / DL1169: STL 2027-05-04 10:06:00 → PHL 2027-05-04 16:44:00; 1 stop(s) via ATL; 338 minutes. Local airport times.
    • DL1571: STL 2027-05-04 10:06:00 → ATL 2027-05-04 12:36:00; layover at ATL: 130 minutes.
    • DL1169: ATL 2027-05-04 14:46:00 → PHL 2027-05-04 16:44:00.
  • Delta Air Lines DL2968 / DL1371: PHL 2027-05-10 09:43:00 → STL 2027-05-10 13:30:00; 1 stop(s) via DTW; 287 minutes. Local airport times.
    • DL2968: PHL 2027-05-10 09:43:00 → DTW 2027-05-10 11:35:00; layover at DTW: 68 minutes.
    • DL1371: DTW 2027-05-10 12:43:00 → STL 2027-05-10 13:30:00.

2027-05-04 → 2027-05-10 · Axel-exclusive $380.00

  • Southwest Airlines WN4923: STL 2027-05-04 18:20:00 → PHL 2027-05-04 21:30:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN3375: PHL 2027-05-10 05:25:00 → STL 2027-05-10 06:55:00; nonstop; 150 minutes. Local airport times.

2027-05-04 → 2027-05-11 · Axel-exclusive $380.00

  • Southwest Airlines WN4923: STL 2027-05-04 18:20:00 → PHL 2027-05-04 21:30:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN3375: PHL 2027-05-11 05:25:00 → STL 2027-05-11 06:55:00; nonstop; 150 minutes. Local airport times.

2027-05-04 → 2027-05-11 · Axel-exclusive $380.00

  • Delta Air Lines DL1571 / DL1169: STL 2027-05-04 10:06:00 → PHL 2027-05-04 16:44:00; 1 stop(s) via ATL; 338 minutes. Local airport times.
    • DL1571: STL 2027-05-04 10:06:00 → ATL 2027-05-04 12:36:00; layover at ATL: 130 minutes.
    • DL1169: ATL 2027-05-04 14:46:00 → PHL 2027-05-04 16:44:00.
  • Delta Air Lines DL2968 / DL1371: PHL 2027-05-11 09:43:00 → STL 2027-05-11 13:30:00; 1 stop(s) via DTW; 287 minutes. Local airport times.
    • DL2968: PHL 2027-05-11 09:43:00 → DTW 2027-05-11 11:35:00; layover at DTW: 68 minutes.
    • DL1371: DTW 2027-05-11 12:43:00 → STL 2027-05-11 13:30:00.

2027-05-04 → 2027-05-12 · Axel-exclusive $380.00

  • Southwest Airlines WN4923: STL 2027-05-04 18:20:00 → PHL 2027-05-04 21:30:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN1424: PHL 2027-05-12 14:45:00 → STL 2027-05-12 16:20:00; nonstop; 155 minutes. Local airport times.

2027-05-04 → 2027-05-12 · Axel-exclusive $380.00

  • Delta Air Lines DL1571 / DL1169: STL 2027-05-04 10:06:00 → PHL 2027-05-04 16:44:00; 1 stop(s) via ATL; 338 minutes. Local airport times.
    • DL1571: STL 2027-05-04 10:06:00 → ATL 2027-05-04 12:36:00; layover at ATL: 130 minutes.
    • DL1169: ATL 2027-05-04 14:46:00 → PHL 2027-05-04 16:44:00.
  • Delta Air Lines DL2968 / DL1371: PHL 2027-05-12 09:43:00 → STL 2027-05-12 13:30:00; 1 stop(s) via DTW; 287 minutes. Local airport times.
    • DL2968: PHL 2027-05-12 09:43:00 → DTW 2027-05-12 11:35:00; layover at DTW: 68 minutes.
    • DL1371: DTW 2027-05-12 12:43:00 → STL 2027-05-12 13:30:00.

2027-05-04 → 2027-05-14 · Axel-exclusive $372.50

  • American Airlines AA4796: STL 2027-05-04 13:15:00 → PHL 2027-05-04 16:30:00; nonstop; 135 minutes. Local airport times.
  • American Airlines AA567 / AA2937: PHL 2027-05-14 15:06:00 → STL 2027-05-14 19:30:00; 1 stop(s) via CLT; 324 minutes. Local airport times.
    • AA567: PHL 2027-05-14 15:06:00 → CLT 2027-05-14 17:04:00; layover at CLT: 83 minutes.
    • AA2937: CLT 2027-05-14 18:27:00 → STL 2027-05-14 19:30:00.

2027-05-04 → 2027-05-14 · Axel-exclusive $380.00

  • Southwest Airlines WN4923: STL 2027-05-04 18:20:00 → PHL 2027-05-04 21:30:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN1424: PHL 2027-05-14 14:45:00 → STL 2027-05-14 16:20:00; nonstop; 155 minutes. Local airport times.

2027-05-04 → 2027-05-15 · Axel-exclusive $380.00

  • Southwest Airlines WN4923: STL 2027-05-04 18:20:00 → PHL 2027-05-04 21:30:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN3375: PHL 2027-05-15 05:25:00 → STL 2027-05-15 06:55:00; nonstop; 150 minutes. Local airport times.

2027-05-04 → 2027-05-15 · Axel-exclusive $380.00

  • Delta Air Lines DL1571 / DL1169: STL 2027-05-04 10:06:00 → PHL 2027-05-04 16:44:00; 1 stop(s) via ATL; 338 minutes. Local airport times.
    • DL1571: STL 2027-05-04 10:06:00 → ATL 2027-05-04 12:36:00; layover at ATL: 130 minutes.
    • DL1169: ATL 2027-05-04 14:46:00 → PHL 2027-05-04 16:44:00.
  • Delta Air Lines DL2968 / DL1371: PHL 2027-05-15 09:43:00 → STL 2027-05-15 13:30:00; 1 stop(s) via DTW; 287 minutes. Local airport times.
    • DL2968: PHL 2027-05-15 09:43:00 → DTW 2027-05-15 11:35:00; layover at DTW: 68 minutes.
    • DL1371: DTW 2027-05-15 12:43:00 → STL 2027-05-15 13:30:00.

2027-05-04 → 2027-05-16 · Axel-exclusive $380.00

  • Delta Air Lines DL1571 / DL1169: STL 2027-05-04 10:06:00 → PHL 2027-05-04 16:44:00; 1 stop(s) via ATL; 338 minutes. Local airport times.
    • DL1571: STL 2027-05-04 10:06:00 → ATL 2027-05-04 12:36:00; layover at ATL: 130 minutes.
    • DL1169: ATL 2027-05-04 14:46:00 → PHL 2027-05-04 16:44:00.
  • Delta Air Lines DL2968 / DL1371: PHL 2027-05-16 09:43:00 → STL 2027-05-16 13:30:00; 1 stop(s) via DTW; 287 minutes. Local airport times.
    • DL2968: PHL 2027-05-16 09:43:00 → DTW 2027-05-16 11:35:00; layover at DTW: 68 minutes.
    • DL1371: DTW 2027-05-16 12:43:00 → STL 2027-05-16 13:30:00.

2027-05-04 → 2027-05-16 · Axel-exclusive $380.00

  • Southwest Airlines WN4923: STL 2027-05-04 18:20:00 → PHL 2027-05-04 21:30:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN3375: PHL 2027-05-16 05:25:00 → STL 2027-05-16 06:55:00; nonstop; 150 minutes. Local airport times.

2027-05-04 → 2027-05-18 · Axel-exclusive $380.00

  • Southwest Airlines WN4923: STL 2027-05-04 18:20:00 → PHL 2027-05-04 21:30:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN3375: PHL 2027-05-18 05:25:00 → STL 2027-05-18 06:55:00; nonstop; 150 minutes. Local airport times.

2027-05-04 → 2027-05-18 · Axel-exclusive $380.00

  • Delta Air Lines DL1571 / DL1169: STL 2027-05-04 10:06:00 → PHL 2027-05-04 16:44:00; 1 stop(s) via ATL; 338 minutes. Local airport times.
    • DL1571: STL 2027-05-04 10:06:00 → ATL 2027-05-04 12:36:00; layover at ATL: 130 minutes.
    • DL1169: ATL 2027-05-04 14:46:00 → PHL 2027-05-04 16:44:00.
  • Delta Air Lines DL2968 / DL1371: PHL 2027-05-18 09:43:00 → STL 2027-05-18 13:30:00; 1 stop(s) via DTW; 287 minutes. Local airport times.
    • DL2968: PHL 2027-05-18 09:43:00 → DTW 2027-05-18 11:35:00; layover at DTW: 68 minutes.
    • DL1371: DTW 2027-05-18 12:43:00 → STL 2027-05-18 13:30:00.

Explore this route

For AI assistants

  • This page: Saint Louis (STL) to Philadelphia (PHL) · May 4, 2027 · choose your return date: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • Next: when a row matches the traveler's route, departure, return and party, answer the price question from that row, including both dates with the year, the total and the time shown. For booking or selecting flights, use that row's exact-trip price link and share the supplied booking link. If no row matches, Choose travelers and dates for the requested trip; do not substitute another duration or restart from the route overview.
  • Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
  • If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel Saint Louis to Philadelphia (PHL) flight deals · Flight search guide.
  • Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Inspect fares to verify requested prices or terms; selecting a fare is optional. Use that fare’s booking link to preserve its Membership price basis. State anything unverified. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and explain what remains unresolved. Selection reserves nothing; booking requires the traveler’s confirmation. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.