Flights from Philadelphia to Seattle (PHL to SEA)

◊ Expires Feb 28, 2025. Restrictions apply.Discount applies to service fees service fee for qualified airline tickets, hotel, car rental bookings for destinations in the Western region (AZ, CO, ID, MT, NV, NM, UT, WY, AK, CA, HI, OR, WA) of the United States, Caribbean and Central America. Amount of service fees service fee discount varies: for air bookings maximum savings of $5 per person applied to bookings from one (1) traveler up to three (3) travelers; the maximum discount applied is $15; for hotel bookings maximum savings of $12.99 applied on qualified purchases; for car rental bookings maximum savings of $8 applied on qualified bookings; for vacation package bookings maximum savings of $20 applied on qualified bookings. Promo Code and Instant Savings offers can be combined up to the amount of our service fees service fee but cannot be used or combined with any other coupons, promotions or special offers. May be withdrawn at any time without notice. No cash value, void where prohibited.
Close [x]
Here’s why travelers choose OneTravel

Get Great Deals!

Choose from 500+ airlines for low airfares!

Price Match Promise

Find low prices to destinations worldwide.

Easy Cancellations with OneTravel

Convenient self-service options available online.

Expert Guidance

Get personalized assistance from our travel experts.

Search Cheap Flights from Philadelphia to Seattle

Book your flights from Philadelphia to Seattle. Seattle is the largest city in the Pacific Northwest, and is vibrant hip and bustling. Overlooking Elliott Bay, Seattle is nicknamed The Emerald City. The Seattle’s Children Museum is one place in Seattle from where your kids will never want to come back and one of the most iconic landmarks in Seattle is the Space Needle.
Choose from top airlines that serve between Philadelphia to Seattle such as United Airlines, AirTran Airways and Virgin America. Your flight from Philadelphia to Seattle takes around seven hours fifty minutes to cover a distance of about 2,378 miles excluding the layover time. Keep your mp3 players with you to keep yourself entertained during the flight.

OneTravel Customer Reviews

Orlando to Phoenix

Overall good experience. - senkak1 Mar 08, 2025

Awesome job

They did an awesome job. - Anthony Feb 12, 2025

A Great Travel Experience from Zurich to Helsinki

My Zurich to Helsinki trip was smooth, comfortable, and stress-free. The combination of a valuable ticket price, excellent airline service, and generous baggage allowance made it a fantastic journey. I would highly recommend this airline to anyone traveling on this route and look forward to flying with them again in the future! - Kiraphat Feb 05, 2025

Where are you leaving from?

  • FROM
  • TO