HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$510+ Cheap flights from Bilbao (BIO) to Seattle (SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/18. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — SEA
Aug 28 — Sep 41
Fri 8/28
Fri 9/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Bilbao 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 Bilbao to Seattle

Cheapest flights from Bilbao to Seattle
Explore the most affordable flight options available from Bilbao to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2026.

This Trip.com deal was found by Cheapflights users on 7/25. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/812:00 pm
BIO
-
SEA
2 stops17h 40m
Multiple Airlines
Mon 9/147:00 pm
SEA
-
BIO
2 stops18h 40m
Multiple Airlines
Deal found 7/25$761
This Trip.com deal was found by Cheapflights users on 7/25. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/812:00 pm
BIO
-
SEA
2 stops17h 40m
Multiple Airlines
Tue 9/157:00 pm
SEA
-
BIO
2 stops18h 40m
Multiple Airlines
Deal found 7/25$781
This Gotogate deal was found by Cheapflights users on 7/25. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/86:50 am
BIO
-
SEA
1 stop14h 05m
Lufthansa
Tue 9/152:10 pm
SEA
-
BIO
1 stop14h 10m
Lufthansa
Deal found 7/25$855
This KLM deal was found by Cheapflights users on 7/27. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:45 am
BIO
-
SEA
1 stop14h 02m
Multiple Airlines
Sun 9/136:45 pm
SEA
-
BIO
1 stop13h 45m
Multiple Airlines
Deal found 7/27$871
This Delta deal was found by Cheapflights users on 7/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/212:00 pm
BIO
-
SEA
2 stops19h 05m
Delta
Sun 9/136:45 pm
SEA
-
BIO
1 stop13h 45m
Delta
Deal found 7/27$877

Find flight deals from Bilbao to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Bilbao (BIO) to Seattle (SEA). 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 July 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$761
(Trip.com)

One-way from

$510
(Kiwi.com)
Provider with most accurate pricing for Bilbao-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Bilbao-Seattle/Tacoma Intl flights.
Search Deals
From Bilbao to Seattle/Tacoma Intl
Search Deals
One-way flight from Bilbao to Seattle/Tacoma Intl
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Bilbao to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 29, 2026.
Use the filters below to find and compare flights from Bilbao to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Tue 9/8

12:00 pm-11:45 am

2 stops32h 45m

Seattle/Tacoma Intl

Tue 9/15

7:00 pm-9:40 am

3 stops29h 40m

$799
Quickest round-trip

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Wed 9/2

6:45 am-11:47 am

1 stop14h 02m

Seattle/Tacoma Intl

Sun 9/13

6:45 pm-5:30 pm

1 stop13h 45m

$871

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Wed 9/2

12:00 pm-10:05 pm

2 stops19h 05m

Seattle/Tacoma Intl

Sun 9/13

6:45 pm-5:30 pm

1 stop13h 45m

$877

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Mon 9/7

6:50 am-11:55 am

1 stop14h 05m

Seattle/Tacoma Intl

Mon 9/14

2:10 pm-10:25 pm

1 stop23h 15m

$883

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Thu 9/3

6:50 am-11:55 am

1 stop14h 05m

Seattle/Tacoma Intl

Sun 5/16

6:50 pm-11:25 pm

1 stop19h 35m

$903

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Wed 9/2

6:50 am-11:55 am

1 stop14h 05m

Seattle/Tacoma Intl

Sun 9/13

6:50 pm-11:25 pm

1 stop19h 35m

$903
Cheapest one-way

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Fri 9/18

7:45 am-8:40 pm

2 stops21h 55m

$533

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Wed 8/5

9:35 pm-10:56 pm

2 stops34h 21m

$908

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Thu 8/6

6:20 pm-5:20 pm

1 stop32h 00m

$1,027

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Wed 8/5

6:20 pm-5:20 pm

1 stop32h 00m

$1,058

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

Showing 1-10 of 12 resultsSorted by cheapest first
1
2
  • Most accurate provider: When it comes to deals on Bilbao-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Bilbao-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Bilbao-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Bilbao-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 Bilbao-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 Bilbao to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Bilbao with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Bilbao to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Bilbao to Seattle?

    Delta can get you from Bilbao to Seattle in just under 19h 05m. Your travel time can differ by up to . Bilbao and Seattle are separated by a distance of 5159 mi.

  • Can I find deals for flights from Bilbao to Seattle that include hotel bookings?

    Yes. In addition to deals on Bilbao to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Bilbao to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Bilbao to Seattle.

  • Can I find deals for business class flights from Bilbao to Seattle?

    Yes. Cheapflights offers flight deals from Bilbao to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Renton
Tacoma
Lacey
Leavenworth
Olympia
Edmonds
Tukwila
Snoqualmie
Tumwater
Centralia
Puyallup
Kent
Ellensburg
Fife
Marysville
Ocean Shores
Lakewood
Lynnwood
Shoreline

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
Cookie settings©2026 Cheapflights