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Cheap Flights from Seattle (SEA) to Philadelphia (PHL) start at $73 for one-way and $140 for round trip. Earn your airline miles on top of our rewards!

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

Detailed flight information from Seattle SEA to Philadelphia PHL. See all airline(s) with scheduled flights and weekly timetables up to 9 months ahead. Flightnumbers and complete route …

Book a one-way ticket from Seattle to Philadelphia International Airport from $70 or travel return from just $130. Fares listed are subject to change and may differ when you make your …

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