Seattle / Tacoma (SEA) to Philadelphia (PHL) flight deal from $144 USD in economy class – flightdeals.net

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Alaska Airlines, Inc.

ASAlaska Airlines, Inc.

One Way•Economy

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

Philadelphia International Airport

Philadelphia, United States

$258 USD

-44%$144 USD

Verified Nov 5, 2025 at 8:28 AM

December 2025

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1$254 2$164 3$144 4$164 5$144 6$144 7$144 8$144 9$144 10$144 11$164 12$144 13$144 14$144 15$144 16$164 17$254 18$309 19$519 20$439 21$309 22$309 23$309 24$144 25$164 26$214 27$254 28$214 29$214 30$214 31$144 1 2 3 4

Limited Availability

16% of dates checked are available within 10% of the lowest price

Thursday, December 11th, 2025

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