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Route overview: Seattle to Philadelphia (PHL) flight deals

Seattle → Philadelphia

Dec 2, 2026 · choose your return date

SEA → 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.

December 2026

Dec 2, 2026 · One waySouthwest AirlinesUp to 1 stop each way$190.00 Dec 2, 2026 · One wayAlaska AirlinesNonstop$205.00 Dec 2, 2026 – Dec 3, 2026 · 1 nightSouthwest AirlinesUp to 1 stop each way$365.00 Dec 2, 2026 – Dec 3, 2026 · 1 nightAlaska AirlinesNonstop$395.00 Dec 2, 2026 – Dec 4, 2026 · 2 nightsSouthwest AirlinesUp to 1 stop each way$365.00 Dec 2, 2026 – Dec 4, 2026 · 2 nightsAlaska AirlinesNonstop$395.00 Dec 2, 2026 – Dec 5, 2026 · 3 nightsSouthwest AirlinesUp to 1 stop each way$365.00 Dec 2, 2026 – Dec 5, 2026 · 3 nightsAlaska AirlinesNonstop$395.00 Dec 2, 2026 – Dec 6, 2026 · 4 nightsSouthwest AirlinesUp to 1 stop each way$365.00 Dec 2, 2026 – Dec 6, 2026 · 4 nightsAlaska AirlinesNonstop$395.00 Dec 2, 2026 – Dec 7, 2026 · 5 nightsSouthwest AirlinesUp to 1 stop each way$365.00 Dec 2, 2026 – Dec 7, 2026 · 5 nightsAlaska AirlinesNonstop$395.00 Dec 2, 2026 – Dec 8, 2026 · 6 nightsSouthwest AirlinesUp to 1 stop each way$365.00 Dec 2, 2026 – Dec 8, 2026 · 6 nightsAlaska AirlinesNonstop$395.00 Dec 2, 2026 – Dec 9, 2026 · 7 nightsSouthwest AirlinesUp to 1 stop each way$365.00 Dec 2, 2026 – Dec 9, 2026 · 7 nightsAlaska AirlinesNonstop$395.00 Dec 2, 2026 – Dec 10, 2026 · 8 nightsSouthwest AirlinesUp to 1 stop each way$365.00 Dec 2, 2026 – Dec 10, 2026 · 8 nightsAlaska AirlinesNonstop$395.00 Dec 2, 2026 – Dec 11, 2026 · 9 nightsSouthwest AirlinesUp to 1 stop each way$365.00 Dec 2, 2026 – Dec 11, 2026 · 9 nightsAlaska AirlinesNonstop$395.00 Dec 2, 2026 – Dec 12, 2026 · 10 nightsSouthwest AirlinesUp to 1 stop each way$365.00 Dec 2, 2026 – Dec 12, 2026 · 10 nightsAlaska AirlinesNonstop$395.00 Dec 2, 2026 – Dec 13, 2026 · 11 nightsSouthwest AirlinesUp to 1 stop each way$365.00 Dec 2, 2026 – Dec 13, 2026 · 11 nightsAlaska AirlinesNonstop$395.00 Dec 2, 2026 – Dec 14, 2026 · 12 nightsSouthwest AirlinesUp to 1 stop each way$365.00 Dec 2, 2026 – Dec 14, 2026 · 12 nightsAlaska AirlinesNonstop$395.00 Dec 2, 2026 – Dec 15, 2026 · 13 nightsSouthwest AirlinesUp to 1 stop each way$365.00 Dec 2, 2026 – Dec 15, 2026 · 13 nightsAlaska AirlinesNonstop$395.00 Dec 2, 2026 – Dec 16, 2026 · 14 nightsSouthwest AirlinesUp to 1 stop each way$365.00 Dec 2, 2026 – Dec 16, 2026 · 14 nightsAlaska AirlinesNonstop$395.00

Flights for your trip

  1. Wed, Dec 2 · One way

    Southwest Airlines
    6:30 amSEA
    7h
    MDW · 1h 10m
    4:30 pmPHL

    One-way total · 1 adult · Taxes included

  2. Wed, Dec 2 · One way

    Alaska Airlines
    9:28 pmSEA
    5h 4m
    Nonstop
    5:32 am+1PHL

    One-way total · 1 adult · Taxes included

  3. Wed, Dec 2 – Thu, Dec 3

    Southwest Airlines
    6:30 amSEA
    7h
    MDW · 1h 10m
    4:30 pmPHL
    Southwest Airlines
    6:20 pmPHL
    8h 15m
    MDW · 1h 10m
    11:35 pmSEA

    Round-trip total · 1 adult · Taxes included

  4. Wed, Dec 2 – Thu, Dec 3

    Alaska Airlines
    9:28 pmSEA
    5h 4m
    Nonstop
    5:32 am+1PHL
    Alaska Airlines
    7:00 amPHL
    6h 28m
    Nonstop
    10:28 amSEA

    Round-trip total · 1 adult · Taxes included

  5. Wed, Dec 2 – Fri, Dec 4

    Southwest Airlines
    6:30 amSEA
    7h
    MDW · 1h 10m
    4:30 pmPHL
    Southwest Airlines
    5:15 pmPHL
    8h 35m
    DEN · 1h 15m
    10:50 pmSEA

    Round-trip total · 1 adult · Taxes included

  6. Wed, Dec 2 – Fri, Dec 4

    Alaska Airlines
    9:28 pmSEA
    5h 4m
    Nonstop
    5:32 am+1PHL
    Alaska Airlines
    7:02 amPHL
    6h 27m
    Nonstop
    10:29 amSEA

    Round-trip total · 1 adult · Taxes included

  7. Wed, Dec 2 – Sat, Dec 5

    Southwest Airlines
    6:30 amSEA
    7h
    MDW · 1h 10m
    4:30 pmPHL
    Southwest Airlines
    6:20 pmPHL
    8h 15m
    MDW · 1h 10m
    11:35 pmSEA

    Round-trip total · 1 adult · Taxes included

  8. Wed, Dec 2 – Sat, Dec 5

    Alaska Airlines
    9:28 pmSEA
    5h 4m
    Nonstop
    5:32 am+1PHL
    Alaska Airlines
    6:46 pmPHL
    6h 10m
    Nonstop
    9:56 pmSEA

    Round-trip total · 1 adult · Taxes included

  9. Wed, Dec 2 – Sun, Dec 6

    Southwest Airlines
    6:30 amSEA
    7h
    MDW · 1h 10m
    4:30 pmPHL
    Southwest Airlines
    6:20 pmPHL
    8h 15m
    MDW · 1h 10m
    11:35 pmSEA

    Round-trip total · 1 adult · Taxes included

  10. Wed, Dec 2 – Sun, Dec 6

    Alaska Airlines
    9:28 pmSEA
    5h 4m
    Nonstop
    5:32 am+1PHL
    Alaska Airlines
    7:02 amPHL
    6h 6m
    Nonstop
    10:08 amSEA

    Round-trip total · 1 adult · Taxes included

  11. Wed, Dec 2 – Tue, Dec 8

    Southwest Airlines
    6:30 amSEA
    7h
    MDW · 1h 10m
    4:30 pmPHL
    Southwest Airlines
    6:20 pmPHL
    8h 15m
    MDW · 1h 10m
    11:35 pmSEA

    Round-trip total · 1 adult · Taxes included

  12. Wed, Dec 2 – Tue, Dec 8

    Alaska Airlines
    9:28 pmSEA
    5h 4m
    Nonstop
    5:32 am+1PHL
    Alaska Airlines
    7:02 amPHL
    6h 6m
    Nonstop
    10:08 amSEA

    Round-trip total · 1 adult · Taxes included

  13. Wed, Dec 2 – Wed, Dec 9

    Southwest Airlines
    6:30 amSEA
    7h
    MDW · 1h 10m
    4:30 pmPHL
    Southwest Airlines
    6:20 pmPHL
    8h 15m
    MDW · 1h 10m
    11:35 pmSEA

    Round-trip total · 1 adult · Taxes included

  14. Wed, Dec 2 – Wed, Dec 9

    Alaska Airlines
    9:28 pmSEA
    5h 4m
    Nonstop
    5:32 am+1PHL
    Alaska Airlines
    7:02 amPHL
    6h 6m
    Nonstop
    10:08 amSEA

    Round-trip total · 1 adult · Taxes included

  15. Wed, Dec 2 – Thu, Dec 10

    Southwest Airlines
    6:30 amSEA
    7h
    MDW · 1h 10m
    4:30 pmPHL
    Southwest Airlines
    6:20 pmPHL
    8h 15m
    MDW · 1h 10m
    11:35 pmSEA

    Round-trip total · 1 adult · Taxes included

  16. Wed, Dec 2 – Thu, Dec 10

    Alaska Airlines
    9:28 pmSEA
    5h 4m
    Nonstop
    5:32 am+1PHL
    Alaska Airlines
    7:00 amPHL
    6h 28m
    Nonstop
    10:28 amSEA

    Round-trip total · 1 adult · Taxes included

  17. Wed, Dec 2 – Sat, Dec 12

    Southwest Airlines
    6:30 amSEA
    7h
    MDW · 1h 10m
    4:30 pmPHL
    Southwest Airlines
    6:20 pmPHL
    8h 15m
    MDW · 1h 10m
    11:35 pmSEA

    Round-trip total · 1 adult · Taxes included

  18. Wed, Dec 2 – Sat, Dec 12

    Alaska Airlines
    9:28 pmSEA
    5h 4m
    Nonstop
    5:32 am+1PHL
    Alaska Airlines
    6:46 pmPHL
    6h 10m
    Nonstop
    9:56 pmSEA

    Round-trip total · 1 adult · Taxes included

  19. Wed, Dec 2 – Sun, Dec 13

    Southwest Airlines
    6:30 amSEA
    7h
    MDW · 1h 10m
    4:30 pmPHL
    Southwest Airlines
    6:20 pmPHL
    8h 15m
    MDW · 1h 10m
    11:35 pmSEA

    Round-trip total · 1 adult · Taxes included

  20. Wed, Dec 2 – Sun, Dec 13

    Alaska Airlines
    9:28 pmSEA
    5h 4m
    Nonstop
    5:32 am+1PHL
    Alaska Airlines
    7:02 amPHL
    6h 6m
    Nonstop
    10:08 amSEA

    Round-trip total · 1 adult · Taxes included

  21. Wed, Dec 2 – Mon, Dec 14

    Southwest Airlines
    6:30 amSEA
    7h
    MDW · 1h 10m
    4:30 pmPHL
    Southwest Airlines
    6:20 pmPHL
    8h 15m
    MDW · 1h 10m
    11:35 pmSEA

    Round-trip total · 1 adult · Taxes included

  22. Wed, Dec 2 – Mon, Dec 14

    Alaska Airlines
    9:28 pmSEA
    5h 4m
    Nonstop
    5:32 am+1PHL
    Alaska Airlines
    7:00 amPHL
    6h 28m
    Nonstop
    10:28 amSEA

    Round-trip total · 1 adult · Taxes included

  23. Wed, Dec 2 – Wed, Dec 16

    Southwest Airlines
    6:30 amSEA
    7h
    MDW · 1h 10m
    4:30 pmPHL
    Southwest Airlines
    6:20 pmPHL
    8h 15m
    MDW · 1h 10m
    11:35 pmSEA

    Round-trip total · 1 adult · Taxes included

  24. Wed, Dec 2 – Wed, Dec 16

    Alaska Airlines
    9:28 pmSEA
    5h 4m
    Nonstop
    5:32 am+1PHL
    Alaska Airlines
    7:02 amPHL
    6h 6m
    Nonstop
    10:08 amSEA

    Round-trip total · 1 adult · Taxes included

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1 of 24

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SEA ⇄ PHL

Economy

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Explore this route

All dates for this routeDec 1, 2026 · Return optionsDec 3, 2026 · 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)
2026-12-02 · one wayAlaska AirlinesAS371Axel-exclusive $205.002026-10-29T01:16:02Z
2026-12-02 · one waySouthwest AirlinesWN1550 + WN1623Axel-exclusive $190.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-03Alaska AirlinesAS371 / AS370Axel-exclusive $395.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-03Southwest AirlinesWN1550 + WN1623 / WN2108 + WN3032Axel-exclusive $365.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-04Alaska AirlinesAS371 / AS370Axel-exclusive $395.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-04Southwest AirlinesWN1550 + WN1623 / WN1270 + WN3141Axel-exclusive $365.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-05Alaska AirlinesAS371 / AS443Axel-exclusive $395.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-05Southwest AirlinesWN1550 + WN1623 / WN2108 + WN3032Axel-exclusive $365.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-06Alaska AirlinesAS371 / AS370Axel-exclusive $395.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-06Southwest AirlinesWN1550 + WN1623 / WN2108 + WN3032Axel-exclusive $365.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-07Alaska AirlinesAS371 / AS370Axel-exclusive $395.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-07Southwest AirlinesWN1550 + WN1623 / WN2108 + WN3032Axel-exclusive $365.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-08Alaska AirlinesAS371 / AS370Axel-exclusive $395.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-08Southwest AirlinesWN1550 + WN1623 / WN2108 + WN3032Axel-exclusive $365.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-09Alaska AirlinesAS371 / AS370Axel-exclusive $395.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-09Southwest AirlinesWN1550 + WN1623 / WN2108 + WN3032Axel-exclusive $365.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-10Alaska AirlinesAS371 / AS370Axel-exclusive $395.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-10Southwest AirlinesWN1550 + WN1623 / WN2108 + WN3032Axel-exclusive $365.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-11Alaska AirlinesAS371 / AS370Axel-exclusive $395.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-11Southwest AirlinesWN1550 + WN1623 / WN1270 + WN3141Axel-exclusive $365.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-12Alaska AirlinesAS371 / AS443Axel-exclusive $395.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-12Southwest AirlinesWN1550 + WN1623 / WN2108 + WN3032Axel-exclusive $365.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-13Alaska AirlinesAS371 / AS370Axel-exclusive $395.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-13Southwest AirlinesWN1550 + WN1623 / WN2108 + WN3032Axel-exclusive $365.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-14Alaska AirlinesAS371 / AS370Axel-exclusive $395.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-14Southwest AirlinesWN1550 + WN1623 / WN2108 + WN3032Axel-exclusive $365.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-15Alaska AirlinesAS371 / AS370Axel-exclusive $395.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-15Southwest AirlinesWN1550 + WN1623 / WN2108 + WN3032Axel-exclusive $365.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-16Alaska AirlinesAS371 / AS370Axel-exclusive $395.002026-10-29T01:16:02Z
2026-12-02 → 2026-12-16Southwest AirlinesWN1550 + WN1623 / WN2108 + WN3032Axel-exclusive $365.002026-10-29T01:16:02Z

Route overview: Seattle to Philadelphia (PHL) flight deals

2026-12-02 · one way · Axel-exclusive $190.00

  • Southwest Airlines WN1550 / WN1623: SEA 2026-12-02 06:30:00 → PHL 2026-12-02 16:30:00; 1 stop(s) via MDW; 420 minutes. Local airport times.
    • WN1550: SEA 2026-12-02 06:30:00 → MDW 2026-12-02 12:25:00; layover at MDW: 70 minutes.
    • WN1623: MDW 2026-12-02 13:35:00 → PHL 2026-12-02 16:30:00.

2026-12-02 · one way · Axel-exclusive $205.00

  • Alaska Airlines AS371: SEA 2026-12-02 21:28:00 → PHL 2026-12-03 05:32:00; nonstop; 304 minutes. Local airport times.

2026-12-02 → 2026-12-03 · Axel-exclusive $365.00

  • Southwest Airlines WN1550 / WN1623: SEA 2026-12-02 06:30:00 → PHL 2026-12-02 16:30:00; 1 stop(s) via MDW; 420 minutes. Local airport times.
    • WN1550: SEA 2026-12-02 06:30:00 → MDW 2026-12-02 12:25:00; layover at MDW: 70 minutes.
    • WN1623: MDW 2026-12-02 13:35:00 → PHL 2026-12-02 16:30:00.
  • Southwest Airlines WN2108 / WN3032: PHL 2026-12-03 18:20:00 → SEA 2026-12-03 23:35:00; 1 stop(s) via MDW; 495 minutes. Local airport times.
    • WN2108: PHL 2026-12-03 18:20:00 → MDW 2026-12-03 19:35:00; layover at MDW: 70 minutes.
    • WN3032: MDW 2026-12-03 20:45:00 → SEA 2026-12-03 23:35:00.

2026-12-02 → 2026-12-03 · Axel-exclusive $395.00

  • Alaska Airlines AS371: SEA 2026-12-02 21:28:00 → PHL 2026-12-03 05:32:00; nonstop; 304 minutes. Local airport times.
  • Alaska Airlines AS370: PHL 2026-12-03 07:00:00 → SEA 2026-12-03 10:28:00; nonstop; 388 minutes. Local airport times.

2026-12-02 → 2026-12-04 · Axel-exclusive $365.00

  • Southwest Airlines WN1550 / WN1623: SEA 2026-12-02 06:30:00 → PHL 2026-12-02 16:30:00; 1 stop(s) via MDW; 420 minutes. Local airport times.
    • WN1550: SEA 2026-12-02 06:30:00 → MDW 2026-12-02 12:25:00; layover at MDW: 70 minutes.
    • WN1623: MDW 2026-12-02 13:35:00 → PHL 2026-12-02 16:30:00.
  • Southwest Airlines WN1270 / WN3141: PHL 2026-12-04 17:15:00 → SEA 2026-12-04 22:50:00; 1 stop(s) via DEN; 515 minutes. Local airport times.
    • WN1270: PHL 2026-12-04 17:15:00 → DEN 2026-12-04 19:25:00; layover at DEN: 75 minutes.
    • WN3141: DEN 2026-12-04 20:40:00 → SEA 2026-12-04 22:50:00.

2026-12-02 → 2026-12-04 · Axel-exclusive $395.00

  • Alaska Airlines AS371: SEA 2026-12-02 21:28:00 → PHL 2026-12-03 05:32:00; nonstop; 304 minutes. Local airport times.
  • Alaska Airlines AS370: PHL 2026-12-04 07:02:00 → SEA 2026-12-04 10:29:00; nonstop; 387 minutes. Local airport times.

2026-12-02 → 2026-12-05 · Axel-exclusive $365.00

  • Southwest Airlines WN1550 / WN1623: SEA 2026-12-02 06:30:00 → PHL 2026-12-02 16:30:00; 1 stop(s) via MDW; 420 minutes. Local airport times.
    • WN1550: SEA 2026-12-02 06:30:00 → MDW 2026-12-02 12:25:00; layover at MDW: 70 minutes.
    • WN1623: MDW 2026-12-02 13:35:00 → PHL 2026-12-02 16:30:00.
  • Southwest Airlines WN2108 / WN3032: PHL 2026-12-05 18:20:00 → SEA 2026-12-05 23:35:00; 1 stop(s) via MDW; 495 minutes. Local airport times.
    • WN2108: PHL 2026-12-05 18:20:00 → MDW 2026-12-05 19:35:00; layover at MDW: 70 minutes.
    • WN3032: MDW 2026-12-05 20:45:00 → SEA 2026-12-05 23:35:00.

2026-12-02 → 2026-12-05 · Axel-exclusive $395.00

  • Alaska Airlines AS371: SEA 2026-12-02 21:28:00 → PHL 2026-12-03 05:32:00; nonstop; 304 minutes. Local airport times.
  • Alaska Airlines AS443: PHL 2026-12-05 18:46:00 → SEA 2026-12-05 21:56:00; nonstop; 370 minutes. Local airport times.

2026-12-02 → 2026-12-06 · Axel-exclusive $365.00

  • Southwest Airlines WN1550 / WN1623: SEA 2026-12-02 06:30:00 → PHL 2026-12-02 16:30:00; 1 stop(s) via MDW; 420 minutes. Local airport times.
    • WN1550: SEA 2026-12-02 06:30:00 → MDW 2026-12-02 12:25:00; layover at MDW: 70 minutes.
    • WN1623: MDW 2026-12-02 13:35:00 → PHL 2026-12-02 16:30:00.
  • Southwest Airlines WN2108 / WN3032: PHL 2026-12-06 18:20:00 → SEA 2026-12-06 23:35:00; 1 stop(s) via MDW; 495 minutes. Local airport times.
    • WN2108: PHL 2026-12-06 18:20:00 → MDW 2026-12-06 19:35:00; layover at MDW: 70 minutes.
    • WN3032: MDW 2026-12-06 20:45:00 → SEA 2026-12-06 23:35:00.

2026-12-02 → 2026-12-06 · Axel-exclusive $395.00

  • Alaska Airlines AS371: SEA 2026-12-02 21:28:00 → PHL 2026-12-03 05:32:00; nonstop; 304 minutes. Local airport times.
  • Alaska Airlines AS370: PHL 2026-12-06 07:02:00 → SEA 2026-12-06 10:08:00; nonstop; 366 minutes. Local airport times.

2026-12-02 → 2026-12-08 · Axel-exclusive $365.00

  • Southwest Airlines WN1550 / WN1623: SEA 2026-12-02 06:30:00 → PHL 2026-12-02 16:30:00; 1 stop(s) via MDW; 420 minutes. Local airport times.
    • WN1550: SEA 2026-12-02 06:30:00 → MDW 2026-12-02 12:25:00; layover at MDW: 70 minutes.
    • WN1623: MDW 2026-12-02 13:35:00 → PHL 2026-12-02 16:30:00.
  • Southwest Airlines WN2108 / WN3032: PHL 2026-12-08 18:20:00 → SEA 2026-12-08 23:35:00; 1 stop(s) via MDW; 495 minutes. Local airport times.
    • WN2108: PHL 2026-12-08 18:20:00 → MDW 2026-12-08 19:35:00; layover at MDW: 70 minutes.
    • WN3032: MDW 2026-12-08 20:45:00 → SEA 2026-12-08 23:35:00.

2026-12-02 → 2026-12-08 · Axel-exclusive $395.00

  • Alaska Airlines AS371: SEA 2026-12-02 21:28:00 → PHL 2026-12-03 05:32:00; nonstop; 304 minutes. Local airport times.
  • Alaska Airlines AS370: PHL 2026-12-08 07:02:00 → SEA 2026-12-08 10:08:00; nonstop; 366 minutes. Local airport times.

2026-12-02 → 2026-12-09 · Axel-exclusive $365.00

  • Southwest Airlines WN1550 / WN1623: SEA 2026-12-02 06:30:00 → PHL 2026-12-02 16:30:00; 1 stop(s) via MDW; 420 minutes. Local airport times.
    • WN1550: SEA 2026-12-02 06:30:00 → MDW 2026-12-02 12:25:00; layover at MDW: 70 minutes.
    • WN1623: MDW 2026-12-02 13:35:00 → PHL 2026-12-02 16:30:00.
  • Southwest Airlines WN2108 / WN3032: PHL 2026-12-09 18:20:00 → SEA 2026-12-09 23:35:00; 1 stop(s) via MDW; 495 minutes. Local airport times.
    • WN2108: PHL 2026-12-09 18:20:00 → MDW 2026-12-09 19:35:00; layover at MDW: 70 minutes.
    • WN3032: MDW 2026-12-09 20:45:00 → SEA 2026-12-09 23:35:00.

2026-12-02 → 2026-12-09 · Axel-exclusive $395.00

  • Alaska Airlines AS371: SEA 2026-12-02 21:28:00 → PHL 2026-12-03 05:32:00; nonstop; 304 minutes. Local airport times.
  • Alaska Airlines AS370: PHL 2026-12-09 07:02:00 → SEA 2026-12-09 10:08:00; nonstop; 366 minutes. Local airport times.

2026-12-02 → 2026-12-10 · Axel-exclusive $365.00

  • Southwest Airlines WN1550 / WN1623: SEA 2026-12-02 06:30:00 → PHL 2026-12-02 16:30:00; 1 stop(s) via MDW; 420 minutes. Local airport times.
    • WN1550: SEA 2026-12-02 06:30:00 → MDW 2026-12-02 12:25:00; layover at MDW: 70 minutes.
    • WN1623: MDW 2026-12-02 13:35:00 → PHL 2026-12-02 16:30:00.
  • Southwest Airlines WN2108 / WN3032: PHL 2026-12-10 18:20:00 → SEA 2026-12-10 23:35:00; 1 stop(s) via MDW; 495 minutes. Local airport times.
    • WN2108: PHL 2026-12-10 18:20:00 → MDW 2026-12-10 19:35:00; layover at MDW: 70 minutes.
    • WN3032: MDW 2026-12-10 20:45:00 → SEA 2026-12-10 23:35:00.

2026-12-02 → 2026-12-10 · Axel-exclusive $395.00

  • Alaska Airlines AS371: SEA 2026-12-02 21:28:00 → PHL 2026-12-03 05:32:00; nonstop; 304 minutes. Local airport times.
  • Alaska Airlines AS370: PHL 2026-12-10 07:00:00 → SEA 2026-12-10 10:28:00; nonstop; 388 minutes. Local airport times.

2026-12-02 → 2026-12-12 · Axel-exclusive $365.00

  • Southwest Airlines WN1550 / WN1623: SEA 2026-12-02 06:30:00 → PHL 2026-12-02 16:30:00; 1 stop(s) via MDW; 420 minutes. Local airport times.
    • WN1550: SEA 2026-12-02 06:30:00 → MDW 2026-12-02 12:25:00; layover at MDW: 70 minutes.
    • WN1623: MDW 2026-12-02 13:35:00 → PHL 2026-12-02 16:30:00.
  • Southwest Airlines WN2108 / WN3032: PHL 2026-12-12 18:20:00 → SEA 2026-12-12 23:35:00; 1 stop(s) via MDW; 495 minutes. Local airport times.
    • WN2108: PHL 2026-12-12 18:20:00 → MDW 2026-12-12 19:35:00; layover at MDW: 70 minutes.
    • WN3032: MDW 2026-12-12 20:45:00 → SEA 2026-12-12 23:35:00.

2026-12-02 → 2026-12-12 · Axel-exclusive $395.00

  • Alaska Airlines AS371: SEA 2026-12-02 21:28:00 → PHL 2026-12-03 05:32:00; nonstop; 304 minutes. Local airport times.
  • Alaska Airlines AS443: PHL 2026-12-12 18:46:00 → SEA 2026-12-12 21:56:00; nonstop; 370 minutes. Local airport times.

2026-12-02 → 2026-12-13 · Axel-exclusive $365.00

  • Southwest Airlines WN1550 / WN1623: SEA 2026-12-02 06:30:00 → PHL 2026-12-02 16:30:00; 1 stop(s) via MDW; 420 minutes. Local airport times.
    • WN1550: SEA 2026-12-02 06:30:00 → MDW 2026-12-02 12:25:00; layover at MDW: 70 minutes.
    • WN1623: MDW 2026-12-02 13:35:00 → PHL 2026-12-02 16:30:00.
  • Southwest Airlines WN2108 / WN3032: PHL 2026-12-13 18:20:00 → SEA 2026-12-13 23:35:00; 1 stop(s) via MDW; 495 minutes. Local airport times.
    • WN2108: PHL 2026-12-13 18:20:00 → MDW 2026-12-13 19:35:00; layover at MDW: 70 minutes.
    • WN3032: MDW 2026-12-13 20:45:00 → SEA 2026-12-13 23:35:00.

2026-12-02 → 2026-12-13 · Axel-exclusive $395.00

  • Alaska Airlines AS371: SEA 2026-12-02 21:28:00 → PHL 2026-12-03 05:32:00; nonstop; 304 minutes. Local airport times.
  • Alaska Airlines AS370: PHL 2026-12-13 07:02:00 → SEA 2026-12-13 10:08:00; nonstop; 366 minutes. Local airport times.

2026-12-02 → 2026-12-14 · Axel-exclusive $365.00

  • Southwest Airlines WN1550 / WN1623: SEA 2026-12-02 06:30:00 → PHL 2026-12-02 16:30:00; 1 stop(s) via MDW; 420 minutes. Local airport times.
    • WN1550: SEA 2026-12-02 06:30:00 → MDW 2026-12-02 12:25:00; layover at MDW: 70 minutes.
    • WN1623: MDW 2026-12-02 13:35:00 → PHL 2026-12-02 16:30:00.
  • Southwest Airlines WN2108 / WN3032: PHL 2026-12-14 18:20:00 → SEA 2026-12-14 23:35:00; 1 stop(s) via MDW; 495 minutes. Local airport times.
    • WN2108: PHL 2026-12-14 18:20:00 → MDW 2026-12-14 19:35:00; layover at MDW: 70 minutes.
    • WN3032: MDW 2026-12-14 20:45:00 → SEA 2026-12-14 23:35:00.

2026-12-02 → 2026-12-14 · Axel-exclusive $395.00

  • Alaska Airlines AS371: SEA 2026-12-02 21:28:00 → PHL 2026-12-03 05:32:00; nonstop; 304 minutes. Local airport times.
  • Alaska Airlines AS370: PHL 2026-12-14 07:00:00 → SEA 2026-12-14 10:28:00; nonstop; 388 minutes. Local airport times.

2026-12-02 → 2026-12-16 · Axel-exclusive $365.00

  • Southwest Airlines WN1550 / WN1623: SEA 2026-12-02 06:30:00 → PHL 2026-12-02 16:30:00; 1 stop(s) via MDW; 420 minutes. Local airport times.
    • WN1550: SEA 2026-12-02 06:30:00 → MDW 2026-12-02 12:25:00; layover at MDW: 70 minutes.
    • WN1623: MDW 2026-12-02 13:35:00 → PHL 2026-12-02 16:30:00.
  • Southwest Airlines WN2108 / WN3032: PHL 2026-12-16 18:20:00 → SEA 2026-12-16 23:35:00; 1 stop(s) via MDW; 495 minutes. Local airport times.
    • WN2108: PHL 2026-12-16 18:20:00 → MDW 2026-12-16 19:35:00; layover at MDW: 70 minutes.
    • WN3032: MDW 2026-12-16 20:45:00 → SEA 2026-12-16 23:35:00.

2026-12-02 → 2026-12-16 · Axel-exclusive $395.00

  • Alaska Airlines AS371: SEA 2026-12-02 21:28:00 → PHL 2026-12-03 05:32:00; nonstop; 304 minutes. Local airport times.
  • Alaska Airlines AS370: PHL 2026-12-16 07:02:00 → SEA 2026-12-16 10:08:00; nonstop; 366 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: Seattle (SEA) to Philadelphia (PHL) · Dec 2, 2026 · 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 Seattle 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.