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Cheap flight deals from Philadelphia to Seattle Starting at NZD 102

For as little as NZD 102, you can take your next adventure to Seattle without breaking the bank. Choose between one-way and return tickets from Philadelphia below.

  • One way
  • Round-trip
      • Cheapest nonstop
        PHL18:25
        6h 26m
        Nonstop
        SEA21:51
        Wed, Mar 5|Philadelphia - Seattle|Alaska Airlines
        NZD 211NZD 271
        22% OFF
        22% OFF
        NZD 271NZD 211

        Choose Alaska Airlines flights from Philadelphia to Seattle. The one-way direct flight with Alaska Airlines departs from Philadelphia International Airport on Wed, Mar 5, arriving at Seattle-Tacoma International Airport. One-way Prices start from NZD 211 including taxes and charges.

      • PHL17:46
        6h 10m
        Nonstop
        SEA20:56
        Wed, Mar 19|Philadelphia - Seattle|Alaska Airlines
        NZD 225NZD 271
        17% OFF
        17% OFF
        NZD 271NZD 225

        Choose Alaska Airlines flights from Philadelphia to Seattle. The one-way direct flight with Alaska Airlines departs from Philadelphia International Airport on Wed, Mar 19, arriving at Seattle-Tacoma International Airport. One-way Prices start from NZD 225 including taxes and charges.

      • PHL07:45
        28h 50m
        1 stop
        SEA09:35
        Wed, Feb 26|Philadelphia - Seattle|Frontier Airlines
        NZD 102NZD 271
        62% OFF
        62% OFF
        NZD 271NZD 102

        Choose Frontier Airlines flights from Philadelphia to Seattle. The one-way connecting flight with Frontier Airlines departs from Philadelphia International Airport on Wed, Feb 26, arriving at Seattle-Tacoma International Airport. One-way Prices start from NZD 102 including taxes and charges.

      • PHL15:19
        24h 13m
        1 stop
        SEA12:32
        Tue, Mar 18|Philadelphia - Seattle|Frontier Airlines
        NZD 112
        NZD 112

        Choose Frontier Airlines flights from Philadelphia to Seattle. The one-way connecting flight with Frontier Airlines departs from Philadelphia International Airport on Tue, Mar 18, arriving at Seattle-Tacoma International Airport. One-way Prices start from NZD 112 including taxes and charges.

      • PHL07:50
        9h 54m
        1 stop
        SEA14:44
        Tue, Mar 4|Philadelphia - Seattle|Frontier Airlines
        NZD 115
        NZD 115

        Choose Frontier Airlines flights from Philadelphia to Seattle. The one-way connecting flight with Frontier Airlines departs from Philadelphia International Airport on Tue, Mar 4, arriving at Seattle-Tacoma International Airport. One-way Prices start from NZD 115 including taxes and charges.

      • PHL06:40
        8h 22m
        1 stop
        SEA12:02
        Mon, Mar 10|Philadelphia - Seattle|Frontier Airlines
        NZD 120
        NZD 120

        Choose Frontier Airlines flights from Philadelphia to Seattle. The one-way connecting flight with Frontier Airlines departs from Philadelphia International Airport on Mon, Mar 10, arriving at Seattle-Tacoma International Airport. One-way Prices start from NZD 120 including taxes and charges.

      • PHL07:45
        9h 59m
        1 stop
        SEA14:44
        Tue, Feb 25|Philadelphia - Seattle|Frontier Airlines
        NZD 123
        NZD 123

        Choose Frontier Airlines flights from Philadelphia to Seattle. The one-way connecting flight with Frontier Airlines departs from Philadelphia International Airport on Tue, Feb 25, arriving at Seattle-Tacoma International Airport. One-way Prices start from NZD 123 including taxes and charges.

      • PHL07:45
        28h 45m
        1 stop
        SEA09:30
        Wed, Mar 12|Philadelphia - Seattle|Frontier Airlines
        NZD 125
        NZD 125

        Choose Frontier Airlines flights from Philadelphia to Seattle. The one-way connecting flight with Frontier Airlines departs from Philadelphia International Airport on Wed, Mar 12, arriving at Seattle-Tacoma International Airport. One-way Prices start from NZD 125 including taxes and charges.

      • PHL07:45
        28h 45m
        1 stop
        SEA09:30
        Wed, Mar 5|Philadelphia - Seattle|Frontier Airlines
        NZD 125
        NZD 125

        Choose Frontier Airlines flights from Philadelphia to Seattle. The one-way connecting flight with Frontier Airlines departs from Philadelphia International Airport on Wed, Mar 5, arriving at Seattle-Tacoma International Airport. One-way Prices start from NZD 125 including taxes and charges.

      • PHL06:40
        21h 4m
        1 stop
        SEA00:44
        Mon, Apr 21|Philadelphia - Seattle|Frontier Airlines
        NZD 127
        NZD 127

        Choose Frontier Airlines flights from Philadelphia to Seattle. The one-way connecting flight with Frontier Airlines departs from Philadelphia International Airport on Mon, Apr 21, arriving at Seattle-Tacoma International Airport. One-way Prices start from NZD 127 including taxes and charges.

      • PHL01:00 pm
        3h 5m
        Nonstop
        SEA02:00 pm
        Thu, Feb 20|Philadelphia - Seattle|Alaska Airlines
        Find More Flights
        Find More Flights

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

Philadelphia to Seattle flight time & flight schedules

Flight info.
Departure
Arrival
Weekly Schedule

  1. F93339

    Frontier Airlines

    06:10

    PHL

    4.2h

    08:24

    DEN

    S--WTF-
    Search

  2. F91175

    Frontier Airlines

    13:30

    DEN

    3.2h

    15:41

    SEA

    SMTWTFS

  3. F92168

    Frontier Airlines

    06:40

    PHL

    1.4h

    08:07

    BOS

    SM-WTFS
    Search

  4. AS364

    Alaska Airlines

    17:20

    BOS

    6.2h

    20:34

    SEA

    SMTWTFS

  5. F92168

    Frontier Airlines

    06:40

    PHL

    1.4h

    08:07

    BOS

    SM-WTFS
    Search

  6. B6497

    Jetblue Airways

    17:55

    BOS

    6.5h

    21:25

    SEA

    SMTWTFS

  7. UA2383

    United Airlines

    08:00

    PHL

    4.3h

    10:17

    DEN

    SMTWTFS
    Search

  8. F93405

    Frontier Airlines

    22:36

    DEN

    3.1h

    00:44

    SEA

    S-T-TF-

  9. DL717

    Delta Air Lines

    09:33

    PHL

    1.9h

    11:28

    DTW

    SMTWTFS
    Search

  10. DL728

    Delta Air Lines

    12:15

    DTW

    5.0h

    14:17

    SEA

    SMTWTFS

  11. F93265

    Frontier Airlines

    12:20

    PHL

    4.3h

    14:41

    DEN

    S--WTFS
    Search

  12. F91175

    Frontier Airlines

    13:30

    DEN

    3.2h

    15:41

    SEA

    SMTWTFS

  13. DL733

    Delta Air Lines

    16:50

    PHL

    1.9h

    18:44

    DTW

    SMTWTFS
    Search

  14. DL565

    Delta Air Lines

    20:20

    DTW

    5.1h

    22:25

    SEA

    SMTWTFS

  15. AA2001

    American Airlines

    18:47

    PHL

    6.1h

    Nonstop

    21:54

    SEA

    SMTWTFS
    Search

  16. AS443

    Alaska Airlines

    18:53

    PHL

    6.1h

    Nonstop

    22:00

    SEA

    SMTWTFS
    Search

  17. F92297

    Frontier Airlines

    20:36

    PHL

    2.5h

    23:04

    ATL

    -M-WTFS
    Search

  18. F91449

    Frontier Airlines

    20:50

    ATL

    3.6h

    22:27

    DEN

    SMTWTFS

  19. F91175

    Frontier Airlines

    13:30

    DEN

    3.2h

    15:41

    SEA

    SMTWTFS
Find more flights and airlines

When is the cheapest time to fly from Philadelphia to Seattle?

Price trend charts are a great way of tracking how much your flights cost in the lead up to departure and can help you choose when to book your tickets. See how prices to Seattle from Philadelphia have changed and are set to move below.

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • When are flight tickets from Philadelphia (PHL) to Seattle (SEA) the cheapest?

    Airlines adjust prices for flights from Philadelphia to Seattle based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much do flights from Philadelphia (PHL) to Seattle (SEA) cost?

    According to Trip.com's data, the lowest price is around NZD 575.

  • How long does it take to fly from Philadelphia (PHL) to Seattle (SEA)?

    It takes about 6 hours 59 minutes to fly from Philadelphia (PHL) to Seattle (SEA).

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

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

  • What are the most popular airlines that fly from Philadelphia (PHL) to Seattle (SEA)?

    Airlines with flights from Philadelphia (PHL) to Seattle (SEA): Alaska Airlines, British Airways, Air Tahiti Nui, Hawaiian Airlines, American Airlines, United Airlines and Qatar Airways.

  • What's the most popular airline for non-stop flights from Philadelphia (PHL) to Seattle (SEA)?

    Alaska Airlines operates 2 non-stop flights from Philadelphia (PHL) to Seattle (SEA).

  • How many airports are there in Seattle (SEA)?

How to find a cheap flight from Philadelphia to Seattle

If you don’t know some of the key things to look out for when buying flight tickets, prices can often end up sky high or, worse, sold out! We’ve carefully compiled our six most important steps to help ensure you’re getting the best deals when planning your next journey.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

Flight Info | Philadelphia to Seattle

Cheapest direct flight priceNZD 101
Cheapest return ticket priceNZD 350
Off-season for travelMarch
Peak season for travelNovember
Flight distance3,816.94 km
Average flight time6 hours 59 minutes
Popular airlineDelta Air Lines

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