Cheap Flights from Philadelphia (PHL) to Seattle (SEA) start at $70 for one-way and $143 for round trip. Earn your airline miles on top of our rewards!

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Flights from Philadelphia to Seattle. Use Google Flights to plan your next trip and find cheap one way or round trip flights from Philadelphia to Seattle. Find the best flights fast, track...

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Philadelphia to Seattle. Discover the best prices and deals for you by selecting …

Find United Airlines cheap flights from Philadelphia to Seattle. Enjoy a Philadelphia to Seattle modern flight experience in premium cabins with Wi-Fi.

Philadelphia (PHL) to Seattle (SEA) flight schedule. The monthly calendar shows every direct flight departure from Philadelphia International Airport (PHL) with all airlines. Click on a date to …

Looking for a cheap last-minute deal or the best round-trip flight from Philadelphia to Seattle / Tacoma International? Find the lowest prices on one-way and round-trip tickets right here.

Looking for a cheap last-minute deal or the best round-trip flight from Philadelphia to Seattle? Find the lowest prices on one-way and round-trip tickets right here.

Find the best deals on flights from Philadelphia International (PHL) to Seattle (SEAA). Compare prices from hundreds of major travel agents and airlines, all in one search.