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Book your flights from Seattle (SEA) to Philadelphia (PHL) on OneTravel. Take advantage of the exclusive travel deals and enjoy great savings on flights to top destinations.
One of America’s most historical cities, Philadelphia has lots to see and do! Take a trip to Philadelphia and spend time exploring the attractions, go shopping and feast on the savory local cuisine. Book flights to Philadelphia on OneTravel and save more to splurge on a vacation! We offer exclusive deals on top airlines, including AirTran, Frontier and Midwest Airlines. The average travel time to reach Philadelphia, PA from Seattle, WA is five hours.