Cheap flights from Philadelphia to North Seattle

View AU$213 flight on Wed, 29 Oct. 2025Opens in a new window

Popular airlines from Philadelphia to North Seattle

  • Jetstar

    Jetstar

  • Qantas Airways

    Qantas Airways

  • Virgin Australia

    Virgin Australia

  • Scoot

    Scoot

  • American Airlines

    American Airlines

  • Emirates

    Emirates

  • United

    United

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

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, 2 Aug. - Sat, 9 Aug.
PHL
Philadelphia
SEA
Seattle
AU$1,414 Return, found 11 hours ago
AU$1,414
Return
found 11 hours ago
Select Alaska Airlines flight, departing Sat, 2 Aug. from Philadelphia to Seattle, returning Sat, 9 Aug., priced at AU$1,414 found 11 hours ago
American Airlines
Sat, 2 Aug. - Sat, 9 Aug.
PHL
Philadelphia
SEA
Seattle
AU$1,420 Return, found 11 hours ago
AU$1,420
Return
found 11 hours ago
Select American Airlines flight, departing Sat, 2 Aug. from Philadelphia to Seattle, returning Sat, 9 Aug., priced at AU$1,420 found 11 hours ago
United
Sat, 2 Aug. - Sat, 9 Aug.
PHL
Philadelphia
SEA
Seattle
AU$1,428 Return, found 11 hours ago
AU$1,428
Return
found 11 hours ago
Select United flight, departing Sat, 2 Aug. from Philadelphia to Seattle, returning Sat, 9 Aug., priced at AU$1,428 found 11 hours ago
Delta
Sat, 2 Aug. - Sat, 9 Aug.
PHL
Philadelphia
SEA
Seattle
AU$1,429 Return, found 11 hours ago
AU$1,429
Return
found 11 hours ago
Select Delta flight, departing Sat, 2 Aug. from Philadelphia to Seattle, returning Sat, 9 Aug., priced at AU$1,429 found 11 hours ago
Alaska Airlines
Sat, 2 Aug. - Sat, 9 Aug.
PHL
Philadelphia
SEA
Seattle
AU$1,430 Return, found 11 hours ago
AU$1,430
Return
found 11 hours ago
Select Alaska Airlines flight, departing Sat, 2 Aug. from Philadelphia to Seattle, returning Sat, 9 Aug., priced at AU$1,430 found 11 hours ago
American Airlines
Sat, 2 Aug. - Sat, 9 Aug.
PHL
Philadelphia
SEA
Seattle
AU$1,434 Return, found 11 hours ago
AU$1,434
Return
found 11 hours ago
Select American Airlines flight, departing Sat, 2 Aug. from Philadelphia to Seattle, returning Sat, 9 Aug., priced at AU$1,434 found 11 hours ago

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

September is typically the cheapest month to fly

From AU$211 - AU$419 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.