C$247 Cheap Flights from Philadelphia to Seattle

Compare Philadelphia to Seattle flight deals

Find the cheapest month or even day of the year to fly to Seattle

Book the best Seattle fare with no extra fees

Flight deals from Philadelphia to Seattle

Looking for a cheap last-minute deal or the best round-trip flight from Philadelphia to Seattle? Find the lowest prices on one-way and round-trip tickets right here.

Seattle.C$247 per passenger.Departing Thu, Apr 24, returning Tue, May 6.Round-trip flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departing from Philadelphia International on Thu, Apr 24, arriving in Seattle / Tacoma International.Inbound indirect flight with Spirit Airlines, departing from Seattle / Tacoma International on Tue, May 6, arriving in Philadelphia International.Price includes taxes and charges.From C$247, select.

Seattle.C$247 per passenger.Departing Wed, Apr 2, returning Thu, Apr 10.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Philadelphia International on Wed, Apr 2, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departing from Seattle / Tacoma International on Thu, Apr 10, arriving in Philadelphia International.Price includes taxes and charges.From C$247, select.

Seattle.C$251 per passenger.Departing Fri, May 2, returning Tue, May 6.Round-trip flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departing from Philadelphia International on Fri, May 2, arriving in Seattle / Tacoma International.Inbound indirect flight with Spirit Airlines, departing from Seattle / Tacoma International on Tue, May 6, arriving in Philadelphia International.Price includes taxes and charges.From C$251, select.

Seattle.C$278 per passenger.Departing Mon, Mar 31, returning Mon, Apr 7.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Philadelphia International on Mon, Mar 31, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departing from Seattle / Tacoma International on Mon, Apr 7, arriving in Philadelphia International.Price includes taxes and charges.From C$278, select.

Seattle.C$278 per passenger.Departing Mon, Mar 24, returning Thu, Mar 27.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Philadelphia International on Mon, Mar 24, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departing from Seattle / Tacoma International on Thu, Mar 27, arriving in Philadelphia International.Price includes taxes and charges.From C$278, select.

Seattle.C$292 per passenger.Departing Tue, Jul 15, returning Tue, Jul 22.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Philadelphia International on Tue, Jul 15, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departing from Seattle / Tacoma International on Tue, Jul 22, arriving in Philadelphia International.Price includes taxes and charges.From C$292, select.

Seattle.C$319 per passenger.Departing Thu, May 29, returning Sat, Jun 7.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Philadelphia International on Thu, May 29, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departing from Seattle / Tacoma International on Sat, Jun 7, arriving in Philadelphia International.Price includes taxes and charges.From C$319, select.

Seattle.C$321 per passenger.Departing Sat, Jun 14, returning Wed, Jun 25.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Philadelphia International on Sat, Jun 14, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departing from Seattle / Tacoma International on Wed, Jun 25, arriving in Philadelphia International.Price includes taxes and charges.From C$321, select.

Find the cheapest month to fly from Philadelphia to Seattle

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Philadelphia to Seattle flights are currently cheapest in April.

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Jan

Feb

Direct flights from Philadelphia to Seattle

Alternative Philadelphia to Seattle routes

Looking for the cheapest, fastest or easiest route from Philadelphia to Seattle? You could fly into the following airports instead.

Philadelphia to Seattle: Flight information

The things to know before you go.

Cheapest flight found	C$247
Cheapest month to fly	April
Average flight time	6 hrs, 8 mins
Most popular airline	Air Tahiti Nui
Average flights per week	68

Finding cheap flights from Philadelphia to Seattle: Frequently asked questions

How many airports are there in Seattle?

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.

How much are round-trip flights from Philadelphia to Seattle?

The best price we found for a round-trip flight from Philadelphia to Seattle is C$247. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Philadelphia to Seattle?

6 hours and 8 minutes is the average flight time from Philadelphia to Seattle.

Which airlines fly direct from Philadelphia to Seattle?

Air Tahiti Nui, American Airlines and Alaska Airlines fly direct from Philadelphia to Seattle.

How many flights are there a week from Philadelphia to Seattle?

There are 68 flights per week flying from Philadelphia to Seattle, as of March 2025.

When is the cheapest time to fly from Philadelphia to Seattle?

The cheapest month to fly from Philadelphia to Seattle is usually March 2025.

What's the cheapest airport to fly to in Seattle?

If you're flying from Philadelphia, the cheapest airport near Seattle is Seattle / Tacoma International – which is 19.5 km away from the center of Seattle. We've found flights to this airport from C$247.

Which upcoming date is cheapest to fly from Philadelphia to Seattle on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Philadelphia to Seattle on Thursday, April 24, 2025.

Can I get a direct flight from Philadelphia to Seattle?

Yes – the average flight time is 6 hours and 8 minutes.

How can I get the best flight deal from Philadelphia to Seattle?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Seattle?

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.

What’s the weather like in Seattle?

In March, the average temperature is usually around 6°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.

Which is the cheapest airline to fly with from Philadelphia to Seattle?

The cheapest airline that flies to Seattle is Spirit Airlines, and the cheapest airline that flies to Seattle Boeing Fld Airport is Hawaiian Airlines.

How to find cheap flights to Seattle from Philadelphia

Looking for cheap tickets from Philadelphia to Seattle? Here are a few tips on how to secure the best flight price and make your journey as smooth as possible.

Simply hit "search." From Delta Air Lines to international carriers like Emirates, we compare all major airlines along with the most popular online travel agents to find the cheapest plane tickets from Philadelphia to Seattle. And with us, there are no hidden fees – what you see is what you pay.
Compare flight deals to Seattle from Philadelphia from over 1,000 providers. Then choose the cheapest plane tickets or fastest journeys.
Flex your dates to find the best Philadelphia–Seattle ticket prices. If you're flexible when it comes to your travel dates, use Skyscanner's "Whole month" tool to find the cheapest month, and even day to fly to Seattle from Philadelphia.
Set up a Price Alert. You can easily track the fare of your cheap Philadelphia–Seattle flights by creating an alert. Whenever prices go down or up, you'll get an email or push notification to help make sure you get the best possible flight deal.
Fly without stops. Only interested in direct flights between Philadelphia and Seattle? Make sure to tick "Direct flights only" when performing a search. If there are direct flights available on the route, these will appear in the results.
Find the cheapest Business Class flights from Philadelphia and Seattle. We scour the Internet for the best Business, Premium Economy and First Class flight fares to Seattle, too. Check the difference in price as you search – you might just stumble on a last-minute low fare. Note that not all cabin classes are available for every destination or airline.
Include nearby airports in your search. Widen your search for Philadelphia to Seattle flight deals by selecting the "add nearby airports" option. This will allow you to see flight prices for all the nearest airports at your departure point and your destination and could help you save the next time you travel.

Combine your flight to Seattle from Philadelphia with hotels and car rental

Once you've secured your cheap flight ticket from Philadelphia to Seattle, discover the best prices and exclusive rates for hotels in Seattle or nearby. You can also compare hundreds of car rental companies at once so you get the best car rental price for your trip.