$321+ Cheap flights from Pittsburgh to Seattle (PIT - BFI)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Pittsburgh to Seattle with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Pittsburgh to Seattle
One-way flights from Pittsburgh to SeattleSearch for one-way flight options from Pittsburgh to Seattle. Find affordable one-way fares based on user searches. Data last updated September 25, 2026.
Search for one-way flight options from Pittsburgh to Seattle. Find affordable one-way fares based on user searches. Data last updated September 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Find flight deals from Pittsburgh to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Pittsburgh (PIT) to Seattle (BFI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Popular in | July |
Cheapest in | February |
Average price | $385 |
Cheapflights Fare Finder
Use the filters below to find and compare flights from Pittsburgh to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
PittsburghSeattle
PIT Pittsburgh - BFI Seattle King County/Boeing
PITBFI
Pittsburgh
Tue 10/27
6:27 pm-10:15 pm
3 stops54h 48m
Seattle King County/Boeing
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
PittsburghSeattle
PIT Pittsburgh - BFI Seattle King County/Boeing
PITBFI
Pittsburgh
Wed 10/21
7:51 pm-10:15 pm
3 stops29h 24m
Seattle King County/Boeing
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
PittsburghSeattle
PIT Pittsburgh - BFI Seattle King County/Boeing
PITBFI
Pittsburgh
Sun 10/11
7:15 am-10:15 pm
3 stops42h 00m
Seattle King County/Boeing
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
PittsburghSeattle
PIT Pittsburgh - BFI Seattle King County/Boeing
PITBFI
Pittsburgh
Tue 10/20
7:51 pm-10:15 pm
3 stops53h 24m
Seattle King County/Boeing
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
PittsburghSeattle
PIT Pittsburgh - BFI Seattle King County/Boeing
PITBFI
Pittsburgh
Fri 11/6
8:54 pm-5:10 pm
3 stops47h 16m
Seattle King County/Boeing
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
PittsburghSeattle
PIT Pittsburgh - BFI Seattle King County/Boeing
PITBFI
Pittsburgh
Wed 11/18
6:27 pm-10:15 am
3 stops42h 48m
Seattle King County/Boeing
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
PittsburghSeattle
PIT Pittsburgh - BFI Seattle King County/Boeing
PITBFI
Pittsburgh
Sat 10/24
8:18 pm-5:10 pm
3 stops23h 52m
Seattle King County/Boeing
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
PittsburghSeattle
PIT Pittsburgh - BFI Seattle King County/Boeing
PITBFI
Pittsburgh
Sat 10/17
8:18 pm-10:15 pm
3 stops52h 57m
Seattle King County/Boeing
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
PittsburghSeattle
PIT Pittsburgh - BFI Seattle King County/Boeing
PITBFI
Pittsburgh
Tue 12/22
10:30 am-10:15 pm
3 stops38h 45m
Seattle King County/Boeing
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
Compare providers for flights from Pittsburgh to Seattle
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Pittsburgh to Seattle in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Pittsburgh-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Pittsburgh-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Pittsburgh-Seattle flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Pittsburgh-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Pittsburgh-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Pittsburgh to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Pittsburgh with our price prediction graph.
Related info for your journey
Find useful and relevant information for your journey from Pittsburgh to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.