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Philadelphia International Airport to Seattle-Tacoma International Airport flight
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Cheap Flight Deals from Philadelphia International Airport to Seattle-Tacoma International Airport

Search for flights from Philadelphia to Seattle and check out affordable one-way and round-trip options.

  • One way
  • Return
sortSort: Price (Lowest)
  • Sort: Price (Lowest)
  • Sort: Departure (Earliest)
      • PHL13:25
        22h 20m
        1 stop
        SEA08:45
        Philadelphia - Seattle|Tue, May 7|Spirit Airlines
        AU$ 124AU$ 193
        36% OFF
        36% OFF
        AU$ 193AU$ 124
      • PHL18:57
        5h 58m
        Direct
        SEA21:55
        Philadelphia - Seattle|Mon, Apr 29|Alaska Airlines
        AU$ 128AU$ 193
        34% OFF
        34% OFF
        AU$ 193AU$ 128
      • PHL20:27
        13h 37m
        1 stop
        SEA07:04
        Philadelphia - Seattle|Sat, May 18|Frontier Airlines
        AU$ 129AU$ 193
        33% OFF
        33% OFF
        AU$ 193AU$ 129
      • PHL06:00
        20h 55m
        1 stop
        SEA23:55
        Philadelphia - Seattle|Tue, May 21|Frontier Airlines
        AU$ 130
        AU$ 130
      • PHL20:40
        23h 18m
        1 stop
        SEA16:58
        Philadelphia - Seattle|Tue, May 7|Frontier Airlines
        AU$ 130
        AU$ 130
      • PHL20:40
        27h 20m
        1 stop
        SEA21:00
        Philadelphia - Seattle|Tue, May 14|Frontier Airlines
        AU$ 135
        AU$ 135
      • PHL20:40
        14h 50m
        1 stop
        SEA08:30
        Philadelphia - Seattle|Wed, May 15|Frontier Airlines
        AU$ 138
        AU$ 138
      • PHL22:13
        13h 21m
        1 stop
        SEA08:34
        Philadelphia - Seattle|Mon, Apr 29|Frontier Airlines
        AU$ 140
        AU$ 140
      • PHL11:50
        23h 40m
        2 stops
        SEA08:30
        Philadelphia - Seattle|Wed, May 22|Sun Country Airlines
        AU$ 145
        AU$ 145
      • PHL22:13
        25h 22m
        2 stops
        SEA20:35
        Philadelphia - Seattle|Mon, May 13|Frontier Airlines
        AU$ 145
        AU$ 145
      • PHL13:00
        3h 5m
        Direct
        SEA14:00
        Philadelphia - Seattle|Mon, May 6|Spirit Airlines
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Selected Airlines from Philadelphia International Airport to Seattle-Tacoma International Airport

See which airlines fly from Philadelphia to Seattle. Find the airline that best meets your travel needs by comparing prices and treat yourself to an enjoyable journey.

Spirit Airlines
From AU$ 124
Sun Country Airlines
From AU$ 145
American Airlines
From AU$ 173
Delta Air Lines
From AU$ 199
United Airlines
From AU$ 217
Southwest Airlines
From AU$ 273
Jetblue Airways
From AU$ 300
Frontier Airlines
From AU$ 390
Alaska Airlines
From AU$ 613
ANA airlines
Find more flights and airlines

Find Cheaper Flights from Philadelphia to Seattle

Explore other flights from Philadelphia to Seattle to find the best alternative options.

  • Cheapest
    Frontier Airlines
    TTN
    20:24
    28h 11m
    2 transfer
    SEA
    21:35
    Trenton Mercer Airport - Seattle-Tacoma International Airport
    Mon, Apr 29Frontier Airlines
    AU$ 174
  • Frontier Airlines
    TTN
    20:24
    28h 11m
    2 transfer
    SEA
    21:35
    Trenton Mercer Airport - Seattle-Tacoma International Airport
    Mon, Apr 29Frontier Airlines
    AU$ 174
    Find More Flights
Flight Schedule from Philadelphia International Airport to Seattle-Tacoma International Airport

Check the schedule for flights from Philadelphia to Seattle and find the flight that best matches your travel plans.

Flight info.
Departure
Arrival
Weekly Schedule

  1. UA1586

    United Airlines

    07:05

    PHL

    4.3h

    09:21

    DEN

    SMT----
    Search

  2. F93405

    Frontier Airlines

    19:08

    DEN

    3.0h

    21:08

    SEA

    --T----

  3. AS370

    Alaska Airlines

    07:07

    PHL

    6.0h

    Direct

    10:07

    SEA

    SMTWTFS
    Search

  4. AA1313

    American Airlines

    08:59

    PHL

    4.2h

    11:12

    DEN

    SMTWT-S
    Search

  5. F91175

    Frontier Airlines

    07:31

    DEN

    3.0h

    09:28

    SEA

    S----F-

  6. UA347

    United Airlines

    10:00

    PHL

    4.3h

    12:20

    DEN

    SMT-TFS
    Search

  7. F91815

    Frontier Airlines

    18:25

    DEN

    3.2h

    20:35

    SEA

    -M-----

  8. AA015

    American Airlines

    10:50

    PHL

    4.3h

    13:06

    DEN

    SMTWTFS
    Search

  9. F94647

    Frontier Airlines

    19:55

    DEN

    3.2h

    22:05

    SEA

    S----F-

  10. SY1776

    Sun Country Airlines

    11:40

    PHL

    3.0h

    13:37

    MSP

    ---W---
    Search

  11. SY285

    Sun Country Airlines

    14:34

    MSP

    3.9h

    16:26

    SEA

    S-TWT-S

  12. F93985

    Frontier Airlines

    18:38

    PHL

    3.7h

    21:18

    DFW

    SMTWTFS
    Search

  13. F92549

    Frontier Airlines

    16:00

    DFW

    2.3h

    17:18

    DEN

    SMT-TF-

  14. F94647

    Frontier Airlines

    19:55

    DEN

    3.2h

    22:05

    SEA

    S----F-

  15. AS443

    Alaska Airlines

    18:59

    PHL

    6.0h

    Direct

    21:59

    SEA

    SMTWTFS
    Search

  16. AA2361

    American Airlines

    19:20

    PHL

    6.3h

    Direct

    22:40

    SEA

    SMTWTFS
    Search

  17. F94815

    Frontier Airlines

    23:13

    PHL

    2.3h

    00:30

    MDW

    -M-W--S
    Search

  18. AS333

    Alaska Airlines

    06:00

    ORD

    4.5h

    08:31

    SEA

    SMTWTFS
Find more flights and airlines

Philadelphia International Airport to Seattle-Tacoma International Airport Flights Info

Flight distance3,821.03km
Cheapest one-way ticket priceAU$ 124
Cheapest return ticket priceAU$ 255

FAQs for Philadelphia International Airport to Seattle-Tacoma International Airport Flights

  • How long is the flights from Philadelphia International Airport (PHL) to Seattle-Tacoma International Airport (SEA)?

    It takes around 7 hours 32 minutes to fly from Philadelphia International Airport (PHL) to Seattle-Tacoma International Airport (SEA).

  • How many daily flights are there from Philadelphia International Airport (PHL) to Seattle-Tacoma International Airport (SEA)?

    There are around 4 daily flights from Philadelphia International Airport (PHL) to Seattle-Tacoma International Airport (SEA).

  • When are flight from Philadelphia International Airport (PHL) to Seattle-Tacoma International Airport (SEA) the cheapest?

    Tickets cost around AU$ 361 in June, making it the cheapest month to book. Philadelphia International Airport (PHL) to Seattle-Tacoma International Airport (SEA) is a popular route, so don't forget to book your tickets in advance.

  • When are flight from Philadelphia International Airport (PHL) to Seattle-Tacoma International Airport (SEA) most expensive?

    The route from Philadelphia International Airport (PHL) to Seattle-Tacoma International Airport (SEA) is quite popular. Without considering departure times or holidays, tickets cost around AU$ 560 in July, the most expensive month to book this route.

  • What time does the earliest flight from Philadelphia International Airport to Seattle-Tacoma International Airport depart?

    The earliest flight departs from Philadelphia International Airport (PHL) at 07:15 and arrives in Seattle-Tacoma International Airport (SEA) at 10:14.

  • What time does the latest flight from Philadelphia International Airport to Seattle-Tacoma International Airport depart?

    The latest flight departs from Philadelphia International Airport (PHL) at 18:50 and arrives in Seattle-Tacoma International Airport (SEA) at 21:52.

  • What is the transportation method from the main airport to downtown in Seattle?

    • The distance from Seattle-Tacoma International Airport to downtown is about 17km, by taxi about 30 minutes.

  • Which airline operates the most direct flights from Philadelphia International Airport (PHL) to Seattle-Tacoma International Airport (SEA)?

    Alaska Airlines is a very popular airline operating an average of 1313 flights per month.

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