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

Delta Air LinesDLDelta Air Lines
Round Trip•Economy
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
United StatesPHL

Philadelphia International Airport

Philadelphia, United States
$390 USD
-16%$329 USD
Verified about 15 hours ago
Great Availability
65% of dates checked are available within 10% of the lowest price

Tuesday, July 7th, 2026

10 round-trip options

Returning
Sun, Jul 12, 2026•5 Day Trip
$413 USD
Google Flights
Returning
Mon, Jul 13, 2026•6 Day Trip
$339 USD
Google Flights
Returning
Tue, Jul 14, 2026•7 Day Trip
$363 USD
Google Flights
Returning
Wed, Jul 15, 2026•8 Day Trip
$413 USD
Google Flights
Returning
Thu, Jul 16, 2026•9 Day Trip
$413 USD
Google Flights
Returning
Fri, Jul 17, 2026•10 Day Trip
$413 USD
Google Flights
Returning
Sat, Jul 18, 2026•11 Day Trip
$363 USD
Google Flights
Returning
Sun, Jul 19, 2026•12 Day Trip
$363 USD
Google Flights
Returning
Mon, Jul 20, 2026•13 Day Trip
$339 USD
Google Flights
Returning
Tue, Jul 21, 2026•14 Day Trip
$329 USD
Google Flights