Seattle / Tacoma (SEA) to Philadelphia (PHL) flight deal in economy from $329

American AirlinesAAAmerican Airlines
Round Trip•Economy
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
United StatesPHL

Philadelphia International Airport

Philadelphia, United States
$396 USD
-17%$329 USD
Verified 13 days ago
Good Availability
48% of dates checked are available within 10% of the lowest price

Friday, August 21st, 2026

6 round-trip options

Returning
Thu, Aug 27, 2026•6 Day Trip
$363 USD
Google Flights
Returning
Fri, Aug 28, 2026•7 Day Trip
$363 USD
Google Flights
Returning
Sun, Aug 30, 2026•9 Day Trip
$363 USD
Google Flights
Returning
Mon, Aug 31, 2026•10 Day Trip
$363 USD
Google Flights
Returning
Tue, Sep 1, 2026•11 Day Trip
$363 USD
Google Flights
Returning
Wed, Sep 2, 2026•12 Day Trip
$363 USD
Google Flights