Flights to North Seattle from Philadelphia - ￥21,740

View ￥21,740 flight on Sat, Aug 30, 2025Opens in a new window

Popular airlines from Philadelphia to North Seattle

  • American Airlines

    American Airlines

  • Delta

    Delta

  • United

    United

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Cheap Flights from Philadelphia to North Seattle (ILG-SEA)

Prices were available within the past 7 days and start at ￥21,740 for one-way flights and ￥42,170 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, Aug 29 - Fri, Sep 5
PHL
Philadelphia
SEA
Seattle
￥42,170 Roundtrip, found 4 days ago
￥42,170
Roundtrip
found 4 days ago
Select Delta flight, departing Fri, Aug 29 from Philadelphia to Seattle, returning Fri, Sep 5, priced at ￥42,170 found 4 days ago
Delta
Fri, Aug 29 - Fri, Sep 5
PHL
Philadelphia
SEA
Seattle
￥43,480 Roundtrip, found 4 days ago
￥43,480
Roundtrip
found 4 days ago
Select Delta flight, departing Fri, Aug 29 from Philadelphia to Seattle, returning Fri, Sep 5, priced at ￥43,480 found 4 days ago
American Airlines
Fri, Aug 29 - Fri, Sep 5
PHL
Philadelphia
SEA
Seattle
￥46,560 Roundtrip, found 4 days ago
￥46,560
Roundtrip
found 4 days ago
Select American Airlines flight, departing Fri, Aug 29 from Philadelphia to Seattle, returning Fri, Sep 5, priced at ￥46,560 found 4 days ago
Delta
Wed, Jan 7 - Fri, Jan 30
PHL
Philadelphia
SEA
Seattle
￥47,630 Roundtrip, found 1 day ago
￥47,630
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Jan 7 from Philadelphia to Seattle, returning Fri, Jan 30, priced at ￥47,630 found 1 day ago
American Airlines
Fri, Aug 29 - Fri, Sep 5
PHL
Philadelphia
SEA
Seattle
￥47,980 Roundtrip, found 4 days ago
￥47,980
Roundtrip
found 4 days ago
Select American Airlines flight, departing Fri, Aug 29 from Philadelphia to Seattle, returning Fri, Sep 5, priced at ￥47,980 found 4 days ago
United
Wed, Jan 7 - Fri, Jan 30
PHL
Philadelphia
SEA
Seattle
￥54,300 Roundtrip, found 1 day ago
￥54,300
Roundtrip
found 1 day ago
Select United flight, departing Wed, Jan 7 from Philadelphia to Seattle, returning Fri, Jan 30, priced at ￥54,300 found 1 day ago

Find the cheapest month to fly from Philadelphia (PHL) to Seattle (SEA)

September is typically the cheapest month to fly

From ￥20,222 - ￥40,026 per traveler.

Graph displaying average flight prices per month

*Available to Expedia members.