Philadelphia (PHL) to Seattle / Tacoma (SEA) flight deal in economy from $329
PHLPhiladelphia International Airport
Philadelphia, United States
SEASeattle–Tacoma International Airport
Seattle / Tacoma, United States
$399 USD
-18%$329 USD
Verified 13 days agoAugust 2026
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Great Availability
69% of dates checked are available within 10% of the lowest price
Thursday, August 13th, 2026
7 round-trip options
Returning
Tue, Aug 18, 2026•5 Day Trip
$473 USD
Returning
Thu, Aug 20, 2026•7 Day Trip
$423 USD
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Sat, Aug 22, 2026•9 Day Trip
$473 USD
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Mon, Aug 24, 2026•11 Day Trip
$383 USD
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Tue, Aug 25, 2026•12 Day Trip
$349 USD
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Wed, Aug 26, 2026•13 Day Trip
$339 USD
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Thu, Aug 27, 2026•14 Day Trip
$349 USD