A direct 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.
Schedule of direct flights from Philadelphia to Seattle
A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Philadelphia to Seattle:
Philadelphia airports overview
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Seattle airports overview
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Frequently asked questions (FAQ)
Answers to questions about the route that travelers are most interested in.
Special offers and sales on air tickets from Philadelphia to Seattle
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.
Alternative routes
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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.
Cheapest one way flight
$174
Southwest Airlines
2 transfers
12h 55m
05/05/2026
The cheapest one-way flight from Philadelphia to Seattle departs on 05/05/2026, is operated by Southwest Airlines and costs $174
Cheapest round trip flight
$186
Southwest Airlines
1 transfer
20h 15m
01/05/2026
The cheapest roundtrip flight from Philadelphia to Seattle departs on 01/05/2026, is operated by Southwest Airlines and costs $186
The fastest flight
6h 1m
Fastest flight from Philadelphia to Seattle takes 6h 1m
Direct flights
Once a week
There are direct flights on this route 1 day a week: Su
Earliest flight
7:02 AM
Latest flight
7:12 PM
Average flight duration
6h 23m
Direct flights count
40
Distance
3819km
Timezone difference
3h
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 route Philadelphia — Seattle is served by many carriers — 4 in total, including United Airlines, Alaska Airlines, Southwest Airlines, and Frontier Airlines. This gives passengers wide opportunities: from finding the lowest fare (from $174) to selecting flights by schedule or service class. Our service aggregates data from multiple booking systems so you can compare offers in one place. This saves time and money: no need to check dozens of sites — just pick the right option and book online.
We couldn't find any special offers for flights from Philadelphia to Seattle
Avg Price
How much is the cheapest flight ticket from Philadelphia to Seattle?
The cheapest flight ticket from Philadelphia to Seattle according to data for the last 48 hours costs $174
When is the best time to buy air tickets on the route Philadelphia — Seattle?
Often the best time to buy tickets from Philadelphia to Seattle is 2 months before departure.
How long does it take to fly from Philadelphia to Seattle?
The fastest flights from Philadelphia to Seattle start from 6 hours 1 minute in the air.
Which airline can fly direct from Philadelphia to Seattle?
The following airlines operate direct flights on the route Philadelphia — Seattle: United 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
