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 13 days ago
Great Availability
69% of dates checked are available within 10% of the lowest price

Saturday, January 2nd, 2027

5 round-trip options

Returning
Fri, Jan 8, 2027•6 Day Trip
$648 USD
Google Flights
Returning
Sat, Jan 9, 2027•7 Day Trip
$648 USD
Google Flights
Returning
Mon, Jan 11, 2027•9 Day Trip
$648 USD
Google Flights
Returning
Tue, Jan 12, 2027•10 Day Trip
$648 USD
Google Flights
Returning
Wed, Jan 13, 2027•11 Day Trip
$648 USD
Google Flights