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

Saturday, August 1st, 2026

6 round-trip options

Returning
Fri, Aug 7, 2026•6 Day Trip
$449 USD
Google Flights
Returning
Sat, Aug 8, 2026•7 Day Trip
$443 USD
Google Flights
Returning
Mon, Aug 10, 2026•9 Day Trip
$405 USD
Google Flights
Returning
Tue, Aug 11, 2026•10 Day Trip
$405 USD
Google Flights
Returning
Wed, Aug 12, 2026•11 Day Trip
$443 USD
Google Flights
Returning
Thu, Aug 13, 2026•12 Day Trip
$449 USD
Google Flights