Cheap Flights from Pittsburgh (PIT) to Seattle (SEA)

View AU$196 flight on Sat, 18 Oct 2025Opens in a new window

Popular airlines from Pittsburgh International Airport (PIT) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Pittsburgh (PIT) to Seattle (SEA)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, 18 Oct - Mon, 27 Oct
PIT
Pittsburgh
SEA
Seattle
AU$272 Return, found 2 days ago
AU$272
Return
found 2 days ago
Select American Airlines flight, departing Sat, 18 Oct from Pittsburgh to Seattle, returning Mon, 27 Oct, priced at AU$272 found 2 days ago
American Airlines
Sat, 18 Oct - Mon, 27 Oct
PIT
Pittsburgh
SEA
Seattle
AU$295 Return, found 2 days ago
AU$295
Return
found 2 days ago
Select American Airlines flight, departing Sat, 18 Oct from Pittsburgh to Seattle, returning Mon, 27 Oct, priced at AU$295 found 2 days ago
Alaska Airlines
Sat, 18 Oct - Mon, 27 Oct
PIT
Pittsburgh
SEA
Seattle
AU$345 Return, found 2 days ago
AU$345
Return
found 2 days ago
Select Alaska Airlines flight, departing Sat, 18 Oct from Pittsburgh to Seattle, returning Mon, 27 Oct, priced at AU$345 found 2 days ago
Delta
Sat, 18 Oct - Mon, 27 Oct
PIT
Pittsburgh
SEA
Seattle
AU$376 Return, found 2 days ago
AU$376
Return
found 2 days ago
Select Delta flight, departing Sat, 18 Oct from Pittsburgh to Seattle, returning Mon, 27 Oct, priced at AU$376 found 2 days ago
American Airlines
Sat, 18 Oct - Mon, 27 Oct
PIT
Pittsburgh
SEA
Seattle
AU$377 Return, found 2 days ago
AU$377
Return
found 2 days ago
Select American Airlines flight, departing Sat, 18 Oct from Pittsburgh to Seattle, returning Mon, 27 Oct, priced at AU$377 found 2 days ago
American Airlines
Fri, 31 Oct - Sun, 2 Nov
PIT
Pittsburgh
SEA
Seattle
AU$387 Return, found 1 day ago
AU$387
Return
found 1 day ago
Select American Airlines flight, departing Fri, 31 Oct from Pittsburgh to Seattle, returning Sun, 2 Nov, priced at AU$387 found 1 day ago
Delta
Fri, 31 Oct - Sun, 2 Nov
PIT
Pittsburgh
SEA
Seattle
AU$391 Return, found 1 day ago
AU$391
Return
found 1 day ago
Select Delta flight, departing Fri, 31 Oct from Pittsburgh to Seattle, returning Sun, 2 Nov, priced at AU$391 found 1 day ago
American Airlines
Sat, 18 Oct - Mon, 27 Oct
PIT
Pittsburgh
SEA
Seattle
AU$399 Return, found 2 days ago
AU$399
Return
found 2 days ago
Select American Airlines flight, departing Sat, 18 Oct from Pittsburgh to Seattle, returning Mon, 27 Oct, priced at AU$399 found 2 days ago
Alaska Airlines
Sat, 18 Oct - Mon, 27 Oct
PIT
Pittsburgh
SEA
Seattle
AU$406 Return, found 2 days ago
AU$406
Return
found 2 days ago
Select Alaska Airlines flight, departing Sat, 18 Oct from Pittsburgh to Seattle, returning Mon, 27 Oct, priced at AU$406 found 2 days ago
United
Sat, 18 Oct - Mon, 27 Oct
PIT
Pittsburgh
SEA
Seattle
AU$416 Return, found 2 days ago
AU$416
Return
found 2 days ago
Select United flight, departing Sat, 18 Oct from Pittsburgh to Seattle, returning Mon, 27 Oct, priced at AU$416 found 2 days ago

Find the cheapest month to fly from Pittsburgh (PIT) to Seattle (SEA)

September is typically the cheapest month to fly

From AU$215 - AU$513 per traveller.

Frequently asked questions

How much is a flight from Pittsburgh Intl. Airport (PIT) to Seattle - Tacoma Intl. Airport (SEA)?
The lowest price advertised for a round-trip journey between Pittsburgh Airport and Sea-Tac Airport is AU$272. But you better get a move on. This figure is based on fares available within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from PIT to SEA?
We get that life can throw the odd curveball, so we've made it as simple as possible for you to cancel your trip online. Just visit the Customer Service Portal and follow the instructions.
How do I find cheap flights from Pittsburgh Airport to SEA that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for PIT to Sea-Tac Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Pittsburgh Intl. Airport (PIT) to Sea-Tac Airport?
Around 3 400 kilometres separates Pittsburgh and SeaTac, so pack something to help you fill in a couple of hours. That latest bestseller you haven't started will be ideal.
Which airlines fly direct from Pittsburgh Airport to Sea-Tac Airport?
Alaska Airlines (AS) will fly you from Pittsburgh Intl. Airport (PIT) to SEA safely and comfortably. You can choose from 30 flights each month on this route.
Are Pittsburgh Airport to Sea-Tac Airport flight tickets cheaper when they're purchased at the last minute?
Last-minute planners can occasionally nab a bargain, with some of the cheapest fares from PIT to SEA surfacing a few weeks prior to the departure date. If you'd rather book ahead, Expedia compares and updates all the best flight deals continuously — as early as 12 months in advance in some cases. It does depend on the carrier though, as not all airlines release prices so far in advance.

Travel information

Travel information

Origin airport
Pittsburgh Intl.
Destination airport
Seattle - Tacoma Intl.
Return price
AU$272
Distance
3388 km
Average flight time
4 hours 20 mins

Book with confidence

Book with confidence

Your quick guide to flights from Pittsburgh to Seattle

Pick up great flights from Pittsburgh to Seattle

With Expedia, you have your pick of 4 flights a day with 20 airlines covering flights from Pittsburgh to Seattle. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Pittsburgh to Seattle that take around 5 hours.

Find cheap flights from Pittsburgh to Seattle

From the great flight deals with prices currently ranging from AU$272 to AU$416, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Pittsburgh to Seattle around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Seattle is normally in October.

Reasons to book your flight from Pittsburgh to Seattle with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Pittsburgh to Seattle across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Seattle right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Your quick guide to flights from Pittsburgh to Seattle
*Available to Expedia members.