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
$396 USD
-17%$329 USD
Verified 13 days agoAugust 2026
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Good Availability
46% of dates checked are available within 10% of the lowest price
Friday, August 7th, 2026
8 round-trip options
Returning
Wed, Aug 12, 2026•5 Day Trip
$401 USD
Returning
Thu, Aug 13, 2026•6 Day Trip
$417 USD
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Fri, Aug 14, 2026•7 Day Trip
$417 USD
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Sat, Aug 15, 2026•8 Day Trip
$515 USD
Returning
Sun, Aug 16, 2026•9 Day Trip
$494 USD
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Mon, Aug 17, 2026•10 Day Trip
$417 USD
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Thu, Aug 20, 2026•13 Day Trip
$407 USD
Returning
Fri, Aug 21, 2026•14 Day Trip
$407 USD