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Philadelphia Seattle - Cheap flights

Special flight deals from Philadelphia to Seattle

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Find the best time to book cheap flights to Seattle

Flexible on travel dates? Discover the cheapest month to fly to Seattle

  • Cheapest round-trip flight

    from 377 USD

  • Cheapest month to travel

    May, June

  • The cheapest day to fly

    Tuesday

  • Lowest prices

    3 months before
Sep
??
Oct
379 USD
Nov
439 USD
Dec
??
Jan
??
Feb
??
Mar
??
Apr
379 USD
May
377 USD
Jun
377 USD
Jul
??
Aug
??

When is the best time to buy flight tickets?

Find out how far in advance it's worth booking round-trip flights.

  • 6 months before

    from

    772 USD

  • 3 months before

    from

    473 USD

  • 30 days before

    from

    876 USD

  • 7 days before

    from

    972 USD

  • 1 day before

    from

    578 USD

Discover the cheapest day to fly

Discover on which day of the week flights are usually the most affordable.
655 USD
Mon
504 USD
Tue
1,128 USD
Wed
717 USD
Thu
662 USD
Fri
596 USD
Sat
648 USD
Sun

General information

  • Local time (UTC-8)

  • Local currency

    USD
Seattle
Seattle, the largest city in the state of Washington, is situated between Puget Sound and Lake Washington, about 175 km from the Canadian border. Home to about 684,451 people in 2015, it is known as the "Emerald City" and serves as an important seaport and air gateway for trade with Asia. Seattle attracts visitors with the Space Needle, Pike Place Market, and the Museum of Pop Culture. The climate is temperate, with mild winters and cool summers. The best time to visit is summer, when temperatures are pleasant.