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

Saint Louis → Philadelphia

Jun 25, 2027 · choose your return date

STL → PHL1 adulteconomyOne way and round trips

30 flight options · 2 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.

June 2027

Jun 25, 2027 · One wayFrontier AirlinesUp to 1 stop each way$130.00 Jun 25, 2027 · One waySouthwest AirlinesNonstop$200.00 Jun 25, 2027 – Jun 26, 2027 · 1 nightFrontier AirlinesUp to 1 stop each way$245.00 Jun 25, 2027 – Jun 26, 2027 · 1 nightSouthwest AirlinesNonstop$380.00 Jun 25, 2027 – Jun 27, 2027 · 2 nightsFrontier AirlinesUp to 1 stop each way$245.00 Jun 25, 2027 – Jun 27, 2027 · 2 nightsSouthwest AirlinesNonstop$380.00 Jun 25, 2027 – Jun 28, 2027 · 3 nightsFrontier AirlinesUp to 1 stop each way$245.00 Jun 25, 2027 – Jun 28, 2027 · 3 nightsSouthwest AirlinesNonstop$380.00 Jun 25, 2027 – Jun 29, 2027 · 4 nightsFrontier AirlinesUp to 1 stop each way$245.00 Jun 25, 2027 – Jun 29, 2027 · 4 nightsSouthwest AirlinesNonstop$380.00 Jun 25, 2027 – Jun 30, 2027 · 5 nightsFrontier AirlinesUp to 1 stop each way$245.00 Jun 25, 2027 – Jun 30, 2027 · 5 nightsSouthwest AirlinesNonstop$380.00 Jun 25, 2027 – Jul 1, 2027 · 6 nightsFrontier AirlinesUp to 1 stop each way$263.38 Jun 25, 2027 – Jul 1, 2027 · 6 nightsSouthwest AirlinesNonstop$408.50 Jun 25, 2027 – Jul 2, 2027 · 7 nightsFrontier AirlinesUp to 1 stop each way$263.38 Jun 25, 2027 – Jul 2, 2027 · 7 nightsSouthwest AirlinesNonstop$408.50 Jun 25, 2027 – Jul 3, 2027 · 8 nightsFrontier AirlinesUp to 1 stop each way$263.38 Jun 25, 2027 – Jul 3, 2027 · 8 nightsSouthwest AirlinesNonstop$408.50 Jun 25, 2027 – Jul 4, 2027 · 9 nightsFrontier AirlinesUp to 1 stop each way$263.38 Jun 25, 2027 – Jul 4, 2027 · 9 nightsSouthwest AirlinesNonstop$408.50 Jun 25, 2027 – Jul 5, 2027 · 10 nightsFrontier AirlinesUp to 1 stop each way$263.38 Jun 25, 2027 – Jul 5, 2027 · 10 nightsSouthwest AirlinesNonstop$408.50 Jun 25, 2027 – Jul 6, 2027 · 11 nightsFrontier AirlinesUp to 1 stop each way$263.38 Jun 25, 2027 – Jul 6, 2027 · 11 nightsSouthwest AirlinesNonstop$408.50 Jun 25, 2027 – Jul 7, 2027 · 12 nightsFrontier AirlinesUp to 1 stop each way$245.00 Jun 25, 2027 – Jul 7, 2027 · 12 nightsSouthwest AirlinesNonstop$380.00 Jun 25, 2027 – Jul 8, 2027 · 13 nightsFrontier AirlinesUp to 1 stop each way$245.00 Jun 25, 2027 – Jul 8, 2027 · 13 nightsSouthwest AirlinesNonstop$380.00 Jun 25, 2027 – Jul 9, 2027 · 14 nightsFrontier AirlinesUp to 1 stop each way$245.00 Jun 25, 2027 – Jul 9, 2027 · 14 nightsSouthwest AirlinesNonstop$380.00

Flights for your trip

  1. Fri, Jun 25 · One way

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

    One-way total · 1 adult · Taxes included

  2. Fri, Jun 25 · One way

    Southwest Airlines
    8:10 pmSTL
    2h 10m
    Nonstop
    11:20 pmPHL

    One-way total · 1 adult · Taxes included

  3. Fri, Jun 25 – Sat, Jun 26

    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

  4. Fri, Jun 25 – Sat, Jun 26

    Southwest Airlines
    8:10 pmSTL
    2h 10m
    Nonstop
    11:20 pmPHL
    Southwest Airlines
    5:25 amPHL
    2h 30m
    Nonstop
    6:55 amSTL

    Round-trip total · 1 adult · Taxes included

  5. Fri, Jun 25 – Sun, Jun 27

    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

  6. Fri, Jun 25 – Sun, Jun 27

    Southwest Airlines
    8:10 pmSTL
    2h 10m
    Nonstop
    11:20 pmPHL
    Southwest Airlines
    5:25 amPHL
    2h 30m
    Nonstop
    6:55 amSTL

    Round-trip total · 1 adult · Taxes included

  7. Fri, Jun 25 – Mon, Jun 28

    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

  8. Fri, Jun 25 – Mon, Jun 28

    Southwest Airlines
    8:10 pmSTL
    2h 10m
    Nonstop
    11:20 pmPHL
    Southwest Airlines
    5:25 amPHL
    2h 30m
    Nonstop
    6:55 amSTL

    Round-trip total · 1 adult · Taxes included

  9. Fri, Jun 25 – Tue, Jun 29

    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

  10. Fri, Jun 25 – Tue, Jun 29

    Southwest Airlines
    8:10 pmSTL
    2h 10m
    Nonstop
    11:20 pmPHL
    Southwest Airlines
    5:25 amPHL
    2h 30m
    Nonstop
    6:55 amSTL

    Round-trip total · 1 adult · Taxes included

  11. Fri, Jun 25 – Thu, Jul 1

    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

  12. Fri, Jun 25 – Thu, Jul 1

    Southwest Airlines
    8:10 pmSTL
    2h 10m
    Nonstop
    11:20 pmPHL
    Southwest Airlines
    2:45 pmPHL
    2h 35m
    Nonstop
    4:20 pmSTL

    Round-trip total · 1 adult · Taxes included

  13. Fri, Jun 25 – Fri, Jul 2

    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

  14. Fri, Jun 25 – Fri, Jul 2

    Southwest Airlines
    8:10 pmSTL
    2h 10m
    Nonstop
    11:20 pmPHL
    Southwest Airlines
    2:45 pmPHL
    2h 35m
    Nonstop
    4:20 pmSTL

    Round-trip total · 1 adult · Taxes included

  15. Fri, Jun 25 – Sat, Jul 3

    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

  16. Fri, Jun 25 – Sat, Jul 3

    Southwest Airlines
    8:10 pmSTL
    2h 10m
    Nonstop
    11:20 pmPHL
    Southwest Airlines
    5:25 amPHL
    2h 30m
    Nonstop
    6:55 amSTL

    Round-trip total · 1 adult · Taxes included

  17. Fri, Jun 25 – Mon, Jul 5

    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

  18. Fri, Jun 25 – Mon, Jul 5

    Southwest Airlines
    8:10 pmSTL
    2h 10m
    Nonstop
    11:20 pmPHL
    Southwest Airlines
    5:25 amPHL
    2h 30m
    Nonstop
    6:55 amSTL

    Round-trip total · 1 adult · Taxes included

  19. Fri, Jun 25 – Tue, Jul 6

    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

  20. Fri, Jun 25 – Tue, Jul 6

    Southwest Airlines
    8:10 pmSTL
    2h 10m
    Nonstop
    11:20 pmPHL
    Southwest Airlines
    5:25 amPHL
    2h 30m
    Nonstop
    6:55 amSTL

    Round-trip total · 1 adult · Taxes included

  21. Fri, Jun 25 – Wed, Jul 7

    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

  22. Fri, Jun 25 – Wed, Jul 7

    Southwest Airlines
    8:10 pmSTL
    2h 10m
    Nonstop
    11:20 pmPHL
    Southwest Airlines
    2:45 pmPHL
    2h 35m
    Nonstop
    4:20 pmSTL

    Round-trip total · 1 adult · Taxes included

  23. Fri, Jun 25 – Fri, Jul 9

    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

  24. Fri, Jun 25 – Fri, Jul 9

    Southwest Airlines
    8:10 pmSTL
    2h 10m
    Nonstop
    11:20 pmPHL
    Southwest Airlines
    2:45 pmPHL
    2h 35m
    Nonstop
    4:20 pmSTL

    Round-trip total · 1 adult · Taxes included

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1 of 24

Make this trip yours

STL ⇄ PHL

Economy

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Explore this route

All dates for this routeJun 24, 2027 · Return optionsJun 26, 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)
2027-06-25 · one waySouthwest AirlinesWN4923Axel-exclusive $200.002026-10-29T01:28:56Z
2027-06-25 · one wayFrontier AirlinesF94474 + F92298Axel-exclusive $130.002026-10-29T01:28:56Z
2027-06-25 → 2027-06-26Southwest AirlinesWN4923 / WN3375Axel-exclusive $380.002026-10-29T01:28:56Z
2027-06-25 → 2027-06-26Frontier AirlinesF94474 + F92298 / F91147 + F94473Axel-exclusive $245.002026-10-29T01:28:56Z
2027-06-25 → 2027-06-27Southwest AirlinesWN4923 / WN3375Axel-exclusive $380.002026-10-29T01:28:56Z
2027-06-25 → 2027-06-27Frontier AirlinesF94474 + F92298 / F91147 + F94473Axel-exclusive $245.002026-10-29T01:28:56Z
2027-06-25 → 2027-06-28Southwest AirlinesWN4923 / WN3375Axel-exclusive $380.002026-10-29T01:28:56Z
2027-06-25 → 2027-06-28Frontier AirlinesF94474 + F92298 / F91147 + F94473Axel-exclusive $245.002026-10-29T01:28:56Z
2027-06-25 → 2027-06-29Southwest AirlinesWN4923 / WN3375Axel-exclusive $380.002026-10-29T01:28:56Z
2027-06-25 → 2027-06-29Frontier AirlinesF94474 + F92298 / F91147 + F94473Axel-exclusive $245.002026-10-29T01:28:56Z
2027-06-25 → 2027-06-30Southwest AirlinesWN4923 / WN1424Axel-exclusive $380.002026-10-29T01:28:56Z
2027-06-25 → 2027-06-30Frontier AirlinesF94474 + F92298 / F91147 + F94473Axel-exclusive $245.002026-10-29T01:28:56Z
2027-06-25 → 2027-07-01Southwest AirlinesWN4923 / WN1424Axel-exclusive $408.502026-10-29T01:28:56Z
2027-06-25 → 2027-07-01Frontier AirlinesF94474 + F92298 / F91147 + F94473Axel-exclusive $263.382026-10-29T01:28:56Z
2027-06-25 → 2027-07-02Southwest AirlinesWN4923 / WN1424Axel-exclusive $408.502026-10-29T01:28:56Z
2027-06-25 → 2027-07-02Frontier AirlinesF94474 + F92298 / F91147 + F94473Axel-exclusive $263.382026-10-29T01:28:56Z
2027-06-25 → 2027-07-03Southwest AirlinesWN4923 / WN3375Axel-exclusive $408.502026-10-29T01:28:56Z
2027-06-25 → 2027-07-03Frontier AirlinesF94474 + F92298 / F91147 + F94473Axel-exclusive $263.382026-10-29T01:28:56Z
2027-06-25 → 2027-07-04Southwest AirlinesWN4923 / WN3375Axel-exclusive $408.502026-10-29T01:28:56Z
2027-06-25 → 2027-07-04Frontier AirlinesF94474 + F92298 / F91147 + F94473Axel-exclusive $263.382026-10-29T01:28:56Z
2027-06-25 → 2027-07-05Southwest AirlinesWN4923 / WN3375Axel-exclusive $408.502026-10-29T01:28:56Z
2027-06-25 → 2027-07-05Frontier AirlinesF94474 + F92298 / F91147 + F94473Axel-exclusive $263.382026-10-29T01:28:56Z
2027-06-25 → 2027-07-06Southwest AirlinesWN4923 / WN3375Axel-exclusive $408.502026-10-29T01:28:56Z
2027-06-25 → 2027-07-06Frontier AirlinesF94474 + F92298 / F91147 + F94473Axel-exclusive $263.382026-10-29T01:28:56Z
2027-06-25 → 2027-07-07Southwest AirlinesWN4923 / WN1424Axel-exclusive $380.002026-10-29T01:28:56Z
2027-06-25 → 2027-07-07Frontier AirlinesF94474 + F92298 / F91147 + F94473Axel-exclusive $245.002026-10-29T01:28:56Z
2027-06-25 → 2027-07-08Southwest AirlinesWN4923 / WN1424Axel-exclusive $380.002026-10-29T01:28:56Z
2027-06-25 → 2027-07-08Frontier AirlinesF94474 + F92298 / F91147 + F94473Axel-exclusive $245.002026-10-29T01:28:56Z
2027-06-25 → 2027-07-09Southwest AirlinesWN4923 / WN1424Axel-exclusive $380.002026-10-29T01:28:56Z
2027-06-25 → 2027-07-09Frontier AirlinesF94474 + F92298 / F91147 + F94473Axel-exclusive $245.002026-10-29T01:28:56Z

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

2027-06-25 · one way · Axel-exclusive $130.00

  • Frontier Airlines F94474 / F92298: STL 2027-06-25 12:02:00 → PHL 2027-06-25 18:32:00; 1 stop(s) via ATL; 330 minutes. Local airport times.
    • F94474: STL 2027-06-25 12:02:00 → ATL 2027-06-25 14:42:00; layover at ATL: 102 minutes.
    • F92298: ATL 2027-06-25 16:24:00 → PHL 2027-06-25 18:32:00.

2027-06-25 · one way · Axel-exclusive $200.00

  • Southwest Airlines WN4923: STL 2027-06-25 20:10:00 → PHL 2027-06-25 23:20:00; nonstop; 130 minutes. Local airport times.

2027-06-25 → 2027-06-26 · Axel-exclusive $245.00

  • Frontier Airlines F94474 / F92298: STL 2027-06-25 12:02:00 → PHL 2027-06-25 18:32:00; 1 stop(s) via ATL; 330 minutes. Local airport times.
    • F94474: STL 2027-06-25 12:02:00 → ATL 2027-06-25 14:42:00; layover at ATL: 102 minutes.
    • F92298: ATL 2027-06-25 16:24:00 → PHL 2027-06-25 18:32:00.
  • Frontier Airlines F91147 / F94473: PHL 2027-06-26 12:49:00 → STL 2027-06-26 17:42:00; 1 stop(s) via ATL; 353 minutes. Local airport times.
    • F91147: PHL 2027-06-26 12:49:00 → ATL 2027-06-26 15:19:00; layover at ATL: 90 minutes.
    • F94473: ATL 2027-06-26 16:49:00 → STL 2027-06-26 17:42:00.

2027-06-25 → 2027-06-26 · Axel-exclusive $380.00

  • Southwest Airlines WN4923: STL 2027-06-25 20:10:00 → PHL 2027-06-25 23:20:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN3375: PHL 2027-06-26 05:25:00 → STL 2027-06-26 06:55:00; nonstop; 150 minutes. Local airport times.

2027-06-25 → 2027-06-27 · Axel-exclusive $245.00

  • Frontier Airlines F94474 / F92298: STL 2027-06-25 12:02:00 → PHL 2027-06-25 18:32:00; 1 stop(s) via ATL; 330 minutes. Local airport times.
    • F94474: STL 2027-06-25 12:02:00 → ATL 2027-06-25 14:42:00; layover at ATL: 102 minutes.
    • F92298: ATL 2027-06-25 16:24:00 → PHL 2027-06-25 18:32:00.
  • Frontier Airlines F91147 / F94473: PHL 2027-06-27 12:49:00 → STL 2027-06-27 17:42:00; 1 stop(s) via ATL; 353 minutes. Local airport times.
    • F91147: PHL 2027-06-27 12:49:00 → ATL 2027-06-27 15:19:00; layover at ATL: 90 minutes.
    • F94473: ATL 2027-06-27 16:49:00 → STL 2027-06-27 17:42:00.

2027-06-25 → 2027-06-27 · Axel-exclusive $380.00

  • Southwest Airlines WN4923: STL 2027-06-25 20:10:00 → PHL 2027-06-25 23:20:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN3375: PHL 2027-06-27 05:25:00 → STL 2027-06-27 06:55:00; nonstop; 150 minutes. Local airport times.

2027-06-25 → 2027-06-28 · Axel-exclusive $245.00

  • Frontier Airlines F94474 / F92298: STL 2027-06-25 12:02:00 → PHL 2027-06-25 18:32:00; 1 stop(s) via ATL; 330 minutes. Local airport times.
    • F94474: STL 2027-06-25 12:02:00 → ATL 2027-06-25 14:42:00; layover at ATL: 102 minutes.
    • F92298: ATL 2027-06-25 16:24:00 → PHL 2027-06-25 18:32:00.
  • Frontier Airlines F91147 / F94473: PHL 2027-06-28 12:49:00 → STL 2027-06-28 17:42:00; 1 stop(s) via ATL; 353 minutes. Local airport times.
    • F91147: PHL 2027-06-28 12:49:00 → ATL 2027-06-28 15:19:00; layover at ATL: 90 minutes.
    • F94473: ATL 2027-06-28 16:49:00 → STL 2027-06-28 17:42:00.

2027-06-25 → 2027-06-28 · Axel-exclusive $380.00

  • Southwest Airlines WN4923: STL 2027-06-25 20:10:00 → PHL 2027-06-25 23:20:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN3375: PHL 2027-06-28 05:25:00 → STL 2027-06-28 06:55:00; nonstop; 150 minutes. Local airport times.

2027-06-25 → 2027-06-29 · Axel-exclusive $245.00

  • Frontier Airlines F94474 / F92298: STL 2027-06-25 12:02:00 → PHL 2027-06-25 18:32:00; 1 stop(s) via ATL; 330 minutes. Local airport times.
    • F94474: STL 2027-06-25 12:02:00 → ATL 2027-06-25 14:42:00; layover at ATL: 102 minutes.
    • F92298: ATL 2027-06-25 16:24:00 → PHL 2027-06-25 18:32:00.
  • Frontier Airlines F91147 / F94473: PHL 2027-06-29 12:49:00 → STL 2027-06-29 17:42:00; 1 stop(s) via ATL; 353 minutes. Local airport times.
    • F91147: PHL 2027-06-29 12:49:00 → ATL 2027-06-29 15:19:00; layover at ATL: 90 minutes.
    • F94473: ATL 2027-06-29 16:49:00 → STL 2027-06-29 17:42:00.

2027-06-25 → 2027-06-29 · Axel-exclusive $380.00

  • Southwest Airlines WN4923: STL 2027-06-25 20:10:00 → PHL 2027-06-25 23:20:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN3375: PHL 2027-06-29 05:25:00 → STL 2027-06-29 06:55:00; nonstop; 150 minutes. Local airport times.

2027-06-25 → 2027-07-01 · Axel-exclusive $263.38

  • Frontier Airlines F94474 / F92298: STL 2027-06-25 12:02:00 → PHL 2027-06-25 18:32:00; 1 stop(s) via ATL; 330 minutes. Local airport times.
    • F94474: STL 2027-06-25 12:02:00 → ATL 2027-06-25 14:42:00; layover at ATL: 102 minutes.
    • F92298: ATL 2027-06-25 16:24:00 → PHL 2027-06-25 18:32:00.
  • Frontier Airlines F91147 / F94473: PHL 2027-07-01 12:49:00 → STL 2027-07-01 17:42:00; 1 stop(s) via ATL; 353 minutes. Local airport times.
    • F91147: PHL 2027-07-01 12:49:00 → ATL 2027-07-01 15:19:00; layover at ATL: 90 minutes.
    • F94473: ATL 2027-07-01 16:49:00 → STL 2027-07-01 17:42:00.

2027-06-25 → 2027-07-01 · Axel-exclusive $408.50

  • Southwest Airlines WN4923: STL 2027-06-25 20:10:00 → PHL 2027-06-25 23:20:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN1424: PHL 2027-07-01 14:45:00 → STL 2027-07-01 16:20:00; nonstop; 155 minutes. Local airport times.

2027-06-25 → 2027-07-02 · Axel-exclusive $263.38

  • Frontier Airlines F94474 / F92298: STL 2027-06-25 12:02:00 → PHL 2027-06-25 18:32:00; 1 stop(s) via ATL; 330 minutes. Local airport times.
    • F94474: STL 2027-06-25 12:02:00 → ATL 2027-06-25 14:42:00; layover at ATL: 102 minutes.
    • F92298: ATL 2027-06-25 16:24:00 → PHL 2027-06-25 18:32:00.
  • Frontier Airlines F91147 / F94473: PHL 2027-07-02 12:49:00 → STL 2027-07-02 17:42:00; 1 stop(s) via ATL; 353 minutes. Local airport times.
    • F91147: PHL 2027-07-02 12:49:00 → ATL 2027-07-02 15:19:00; layover at ATL: 90 minutes.
    • F94473: ATL 2027-07-02 16:49:00 → STL 2027-07-02 17:42:00.

2027-06-25 → 2027-07-02 · Axel-exclusive $408.50

  • Southwest Airlines WN4923: STL 2027-06-25 20:10:00 → PHL 2027-06-25 23:20:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN1424: PHL 2027-07-02 14:45:00 → STL 2027-07-02 16:20:00; nonstop; 155 minutes. Local airport times.

2027-06-25 → 2027-07-03 · Axel-exclusive $263.38

  • Frontier Airlines F94474 / F92298: STL 2027-06-25 12:02:00 → PHL 2027-06-25 18:32:00; 1 stop(s) via ATL; 330 minutes. Local airport times.
    • F94474: STL 2027-06-25 12:02:00 → ATL 2027-06-25 14:42:00; layover at ATL: 102 minutes.
    • F92298: ATL 2027-06-25 16:24:00 → PHL 2027-06-25 18:32:00.
  • Frontier Airlines F91147 / F94473: PHL 2027-07-03 12:49:00 → STL 2027-07-03 17:42:00; 1 stop(s) via ATL; 353 minutes. Local airport times.
    • F91147: PHL 2027-07-03 12:49:00 → ATL 2027-07-03 15:19:00; layover at ATL: 90 minutes.
    • F94473: ATL 2027-07-03 16:49:00 → STL 2027-07-03 17:42:00.

2027-06-25 → 2027-07-03 · Axel-exclusive $408.50

  • Southwest Airlines WN4923: STL 2027-06-25 20:10:00 → PHL 2027-06-25 23:20:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN3375: PHL 2027-07-03 05:25:00 → STL 2027-07-03 06:55:00; nonstop; 150 minutes. Local airport times.

2027-06-25 → 2027-07-05 · Axel-exclusive $263.38

  • Frontier Airlines F94474 / F92298: STL 2027-06-25 12:02:00 → PHL 2027-06-25 18:32:00; 1 stop(s) via ATL; 330 minutes. Local airport times.
    • F94474: STL 2027-06-25 12:02:00 → ATL 2027-06-25 14:42:00; layover at ATL: 102 minutes.
    • F92298: ATL 2027-06-25 16:24:00 → PHL 2027-06-25 18:32:00.
  • Frontier Airlines F91147 / F94473: PHL 2027-07-05 12:49:00 → STL 2027-07-05 17:42:00; 1 stop(s) via ATL; 353 minutes. Local airport times.
    • F91147: PHL 2027-07-05 12:49:00 → ATL 2027-07-05 15:19:00; layover at ATL: 90 minutes.
    • F94473: ATL 2027-07-05 16:49:00 → STL 2027-07-05 17:42:00.

2027-06-25 → 2027-07-05 · Axel-exclusive $408.50

  • Southwest Airlines WN4923: STL 2027-06-25 20:10:00 → PHL 2027-06-25 23:20:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN3375: PHL 2027-07-05 05:25:00 → STL 2027-07-05 06:55:00; nonstop; 150 minutes. Local airport times.

2027-06-25 → 2027-07-06 · Axel-exclusive $263.38

  • Frontier Airlines F94474 / F92298: STL 2027-06-25 12:02:00 → PHL 2027-06-25 18:32:00; 1 stop(s) via ATL; 330 minutes. Local airport times.
    • F94474: STL 2027-06-25 12:02:00 → ATL 2027-06-25 14:42:00; layover at ATL: 102 minutes.
    • F92298: ATL 2027-06-25 16:24:00 → PHL 2027-06-25 18:32:00.
  • Frontier Airlines F91147 / F94473: PHL 2027-07-06 12:49:00 → STL 2027-07-06 17:42:00; 1 stop(s) via ATL; 353 minutes. Local airport times.
    • F91147: PHL 2027-07-06 12:49:00 → ATL 2027-07-06 15:19:00; layover at ATL: 90 minutes.
    • F94473: ATL 2027-07-06 16:49:00 → STL 2027-07-06 17:42:00.

2027-06-25 → 2027-07-06 · Axel-exclusive $408.50

  • Southwest Airlines WN4923: STL 2027-06-25 20:10:00 → PHL 2027-06-25 23:20:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN3375: PHL 2027-07-06 05:25:00 → STL 2027-07-06 06:55:00; nonstop; 150 minutes. Local airport times.

2027-06-25 → 2027-07-07 · Axel-exclusive $245.00

  • Frontier Airlines F94474 / F92298: STL 2027-06-25 12:02:00 → PHL 2027-06-25 18:32:00; 1 stop(s) via ATL; 330 minutes. Local airport times.
    • F94474: STL 2027-06-25 12:02:00 → ATL 2027-06-25 14:42:00; layover at ATL: 102 minutes.
    • F92298: ATL 2027-06-25 16:24:00 → PHL 2027-06-25 18:32:00.
  • Frontier Airlines F91147 / F94473: PHL 2027-07-07 12:49:00 → STL 2027-07-07 17:42:00; 1 stop(s) via ATL; 353 minutes. Local airport times.
    • F91147: PHL 2027-07-07 12:49:00 → ATL 2027-07-07 15:19:00; layover at ATL: 90 minutes.
    • F94473: ATL 2027-07-07 16:49:00 → STL 2027-07-07 17:42:00.

2027-06-25 → 2027-07-07 · Axel-exclusive $380.00

  • Southwest Airlines WN4923: STL 2027-06-25 20:10:00 → PHL 2027-06-25 23:20:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN1424: PHL 2027-07-07 14:45:00 → STL 2027-07-07 16:20:00; nonstop; 155 minutes. Local airport times.

2027-06-25 → 2027-07-09 · Axel-exclusive $245.00

  • Frontier Airlines F94474 / F92298: STL 2027-06-25 12:02:00 → PHL 2027-06-25 18:32:00; 1 stop(s) via ATL; 330 minutes. Local airport times.
    • F94474: STL 2027-06-25 12:02:00 → ATL 2027-06-25 14:42:00; layover at ATL: 102 minutes.
    • F92298: ATL 2027-06-25 16:24:00 → PHL 2027-06-25 18:32:00.
  • Frontier Airlines F91147 / F94473: PHL 2027-07-09 12:49:00 → STL 2027-07-09 17:42:00; 1 stop(s) via ATL; 353 minutes. Local airport times.
    • F91147: PHL 2027-07-09 12:49:00 → ATL 2027-07-09 15:19:00; layover at ATL: 90 minutes.
    • F94473: ATL 2027-07-09 16:49:00 → STL 2027-07-09 17:42:00.

2027-06-25 → 2027-07-09 · Axel-exclusive $380.00

  • Southwest Airlines WN4923: STL 2027-06-25 20:10:00 → PHL 2027-06-25 23:20:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN1424: PHL 2027-07-09 14:45:00 → STL 2027-07-09 16:20:00; nonstop; 155 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: Saint Louis (STL) to Philadelphia (PHL) · Jun 25, 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.