Alaska Airlines
Every day
starting at $418
Compare airlines, prices, and flight durations for your trip
A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Philadelphia to Seattle:
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Answers to questions about the route that travelers are most interested in.
We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.
Looking for cheap flights from Philadelphia to Seattle? Look no further! Our air ticket search website offers the best rates on flights from Philadelphia to Seattle, ensuring you save big on your travel expenses. With our user-friendly interface, you can easily compare different airlines and book the most affordable tickets available. Whether you're planning a business trip or a vacation, our website provides the most up-to-date information on flight schedules and prices. Don't miss out on the chance to visit the stunning Emerald City without breaking the bank. Start your search now and discover the cheapest flights from Philadelphia to Seattle with just a few clicks.
Alaska Airlines
Every day
starting at $418
A non-stop flight is the most convenient and comfortable way to fly from Philadelphia to Seattle, despite the fact that sometimes flights with transfers can cost significantly less.
Philadelphia — Seattle
02/20/2026
Departure
Direct flight
AA2361
starting at $168
Philadelphia — Seattle
03/01/2026
Departure
Direct flight
AA2361
starting at $322
Philadelphia — Seattle
03/02/2026
Departure
Direct flight
AA2361
starting at $301
Philadelphia — Seattle
03/30/2026
Departure
Direct flight
AA2361
starting at $172
Philadelphia — Seattle
04/02/2026
Departure
Direct flight
AS370
starting at $303
Philadelphia — Seattle
04/03/2026
Departure
Direct flight
AA2361
starting at $164
Philadelphia — Seattle
04/12/2026
Departure
Direct flight
AA2763
starting at $231
The Philadelphia — Seattle route is served by multiple airlines, including American Airlines, Alaska Airlines, and Frontier Airlines. This is convenient for those who want the best balance of price, schedule, and travel conditions. Tickets start from $126, and depending on season and promotions, even better deals may appear. With our service, you can easily compare available options and book tickets that match your plans. The variety of carriers allows flexible choices and comfortable travel without overpaying.
The cheapest one-way flight from Philadelphia to Seattle departs on 03/01/2026, is operated by Frontier Airlines and costs $126
The cheapest roundtrip flight from Philadelphia to Seattle departs on 03/10/2026, is operated by Southwest Airlines and costs $131
Fastest flight from Philadelphia to Seattle takes 6h 22m
There are direct flights on this route 4 days a week: Su, Mo, Th, and Fr
The distance between Philadelphia and Seattle is 3819km (2368 miles). The average flight duration is 6h 23m. There are 40 direct flights from Philadelphia to Seattle. The time difference between Philadelphia and Seattle is 3h. Flights from Philadelphia begin at 7:02 AM. The latest flight from Philadelphia departs at 7:12 PM
The cheapest flight ticket from Philadelphia to Seattle according to data for the last 48 hours costs $126
Often the best time to buy tickets from Philadelphia to Seattle is 2 months before departure.
The fastest flights from Philadelphia to Seattle start from 6 hours 22 minutes in the air.
The following airlines operate direct flights on the route Philadelphia — Seattle: American Airlines, Alaska Airlines
We carefully collect statistics on the search and pricing of airlines and, based on these data, we make an assumption about future prices. Thus, you can better understand which season is the cheapest to fly from Philadelphia to Seattle
We couldn't find any special offers for flights from Philadelphia to Seattle