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
$402 USD
-18%$329 USD
Verified about 20 hours ago
Good Availability
40% of dates checked are available within 10% of the lowest price

Sunday, August 9th, 2026

9 round-trip options

Returning
Fri, Aug 14, 2026•5 Day Trip
$494 USD
Google Flights
Returning
Sat, Aug 15, 2026•6 Day Trip
$478 USD
Google Flights
Returning
Sun, Aug 16, 2026•7 Day Trip
$484 USD
Google Flights
Returning
Tue, Aug 18, 2026•9 Day Trip
$440 USD
Google Flights
Returning
Wed, Aug 19, 2026•10 Day Trip
$440 USD
Google Flights
Returning
Thu, Aug 20, 2026•11 Day Trip
$440 USD
Google Flights
Returning
Fri, Aug 21, 2026•12 Day Trip
$440 USD
Google Flights
Returning
Sat, Aug 22, 2026•13 Day Trip
$440 USD
Google Flights
Returning
Sun, Aug 23, 2026•14 Day Trip
$484 USD
Google Flights