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 14 days ago
Good Availability
48% of dates checked are available within 10% of the lowest price

Tuesday, August 25th, 2026

6 round-trip options

Returning
Mon, Aug 31, 2026•6 Day Trip
$357 USD
Google Flights
Returning
Tue, Sep 1, 2026•7 Day Trip
$357 USD
Google Flights
Returning
Thu, Sep 3, 2026•9 Day Trip
$357 USD
Google Flights
Returning
Fri, Sep 4, 2026•10 Day Trip
$357 USD
Google Flights
Returning
Sat, Sep 5, 2026•11 Day Trip
$357 USD
Google Flights
Returning
Sun, Sep 6, 2026•12 Day Trip
$391 USD
Google Flights