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

Delta Air LinesDLDelta Air Lines
Round Trip•Economy
United StatesPHL

Philadelphia International Airport

Philadelphia, United States
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
$399 USD
-18%$329 USD
Verified 14 days ago
Great Availability
69% of dates checked are available within 10% of the lowest price

Tuesday, January 19th, 2027

5 round-trip options

Returning
Mon, Jan 25, 2027•6 Day Trip
$349 USD
Google Flights
Returning
Tue, Jan 26, 2027•7 Day Trip
$349 USD
Google Flights
Returning
Thu, Jan 28, 2027•9 Day Trip
$349 USD
Google Flights
Returning
Fri, Jan 29, 2027•10 Day Trip
$349 USD
Google Flights
Returning
Sat, Jan 30, 2027•11 Day Trip
$349 USD
Google Flights