Seattle / Tacoma (SEA) to Philadelphia (PHL) flight deal in economy from $329
SEASeattle–Tacoma International Airport
Seattle / Tacoma, United States
PHLPhiladelphia International Airport
Philadelphia, United States
$401 USD
-18%$329 USD
Verified 14 days agoAugust 2026
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Great Availability
68% of dates checked are available within 10% of the lowest price
Saturday, August 8th, 2026
5 round-trip options
Returning
Sat, Aug 15, 2026•7 Day Trip
$822 USD
Returning
Tue, Aug 18, 2026•10 Day Trip
$638 USD
Returning
Wed, Aug 19, 2026•11 Day Trip
$712 USD
Returning
Thu, Aug 20, 2026•12 Day Trip
$648 USD
Returning
Sat, Aug 22, 2026•14 Day Trip
$772 USD