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Cheap flights from Seattle to Bilbao from $245

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Bilbao departing on 4/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Seattle to Bilbao

Cheap round-trip flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
6:00 am - 11:35 am
SEA
-
BIO
44h 35m
2 stops
Scandinavian Airlines Logo
7:35 pm - 1:45 pm
BIO
-
SEA
27h 10m
1 stop
$523Scandinavian Airlines
Sat, May 2 - Fri, May 22
Scandinavian Airlines Logo
6:00 am - 11:35 am
SEA
-
BIO
44h 35m
2 stops
Scandinavian Airlines Logo
7:35 pm - 1:45 pm
BIO
-
SEA
27h 10m
1 stop
$551Scandinavian Airlines
Sat, May 2 - Fri, May 22
Delta Logo
6:40 pm - 5:30 pm
SEA
-
BIO
13h 50m
1 stop
Delta Logo
6:45 am - 4:30 pm
BIO
-
SEA
18h 45m
1 stop
$567Delta
Tue, Apr 14 - Tue, Apr 21
Delta Logo
6:40 pm - 5:30 pm
SEA
-
BIO
13h 50m
1 stop
Delta Logo
6:45 am - 6:30 pm
BIO
-
SEA
20h 45m
2 stops
$577Delta
Tue, Apr 14 - Tue, Apr 21
Delta Logo
7:15 am - 11:15 am
SEA
-
BIO
19h 00m
2 stops
Delta Logo
6:45 am - 6:30 pm
BIO
-
SEA
20h 45m
2 stops
$587Delta
Tue, Apr 14 - Tue, Apr 21
Scandinavian Airlines Logo
7:25 am - 11:35 am
SEA
-
BIO
43h 10m
2 stops
Scandinavian Airlines Logo
7:35 pm - 1:45 pm
BIO
-
SEA
27h 10m
1 stop
$593Scandinavian Airlines
Sat, May 2 - Fri, May 22
Delta Logo
6:40 pm - 5:30 pm
SEA
-
BIO
13h 50m
1 stop
Delta Logo
6:45 am - 6:28 pm
BIO
-
SEA
20h 43m
2 stops
$597Delta
Tue, Apr 14 - Tue, Apr 21
United Airlines Logo
10:48 am - 4:00 pm
SEA
-
BIO
20h 12m
2 stops
United Airlines Logo
6:50 am - 9:53 pm
BIO
-
SEA
48h 03m
2 stops
$603United Airlines
Tue, Apr 14 - Tue, Apr 21
United Airlines Logo
7:00 am - 4:00 pm
SEA
-
BIO
24h 00m
2 stops
United Airlines Logo
6:50 am - 11:27 pm
BIO
-
SEA
25h 37m
3 stops
$605United Airlines
Tue, Apr 14 - Tue, Apr 21
United Airlines Logo
8:45 am - 11:25 pm
SEA
-
BIO
29h 40m
2 stops
United Airlines Logo
6:50 am - 11:59 pm
BIO
-
SEA
26h 09m
2 stops
$636United Airlines
Mon, Aug 3 - Wed, Aug 19

Scandinavian Airlines flights from Seattle to Bilbao

Our best Scandinavian Airlines deals on Seattle to Bilbao flight tickets
Scandinavian Airlines
May 2
SEA6:00 amSeattle/Tacoma Intl
44h 35m
2 stops
BIO11:35 amBilbao
May 22
BIO7:35 pmBilbao
27h 10m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
$523
Scandinavian Airlines
May 2
SEA6:00 amSeattle/Tacoma Intl
44h 35m
2 stops
BIO11:35 amBilbao
May 22
BIO7:35 pmBilbao
27h 10m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
$551
Scandinavian Airlines
May 2
SEA7:25 amSeattle/Tacoma Intl
43h 10m
2 stops
BIO11:35 amBilbao
May 22
BIO7:35 pmBilbao
27h 10m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
$593

United Airlines flights from Seattle to Bilbao

Our best United Airlines deals on Seattle to Bilbao flight tickets
United Airlines
Apr 14
SEA10:48 amSeattle/Tacoma Intl
20h 12m
2 stops
BIO4:00 pmBilbao
Apr 21
BIO6:50 amBilbao
48h 03m
2 stops
SEA9:53 pmSeattle/Tacoma Intl
$603
United Airlines
Apr 14
SEA7:00 amSeattle/Tacoma Intl
24h 00m
2 stops
BIO4:00 pmBilbao
Apr 21
BIO6:50 amBilbao
25h 37m
3 stops
SEA11:27 pmSeattle/Tacoma Intl
$605
United Airlines
Aug 3
SEA8:45 amSeattle/Tacoma Intl
29h 40m
2 stops
BIO11:25 pmBilbao
Aug 19
BIO6:50 amBilbao
26h 09m
2 stops
SEA11:59 pmSeattle/Tacoma Intl
$636

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Bilbao 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, momondo users made 832,500 searches. Data last updated February 28, 2026.
Use the filters below to find and compare flights from Seattle to Bilbao that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sat 5/2

6:00 am-11:35 am

2 stops44h 35m

Bilbao

Fri 5/22

7:35 pm-1:45 pm

1 stop27h 10m

$523

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sat 5/2

6:00 am-11:35 am

2 stops44h 35m

Bilbao

Fri 5/22

7:35 pm-1:45 pm

1 stop27h 10m

$551

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Tue 4/14

6:40 pm-5:30 pm

1 stop13h 50m

Bilbao

Tue 4/21

6:45 am-4:30 pm

1 stop18h 45m

$567

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Tue 4/14

6:40 pm-5:30 pm

1 stop13h 50m

Bilbao

Tue 4/21

6:45 am-6:30 pm

2 stops20h 45m

$577

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Tue 4/14

7:15 am-11:15 am

2 stops19h 00m

Bilbao

Tue 4/21

6:45 am-6:30 pm

2 stops20h 45m

$587

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sat 5/2

7:25 am-11:35 am

2 stops43h 10m

Bilbao

Fri 5/22

7:35 pm-1:45 pm

1 stop27h 10m

$593

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Tue 4/14

6:40 pm-5:30 pm

1 stop13h 50m

Bilbao

Tue 4/21

6:45 am-6:28 pm

2 stops20h 43m

$597

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Tue 4/14

10:48 am-4:00 pm

2 stops20h 12m

Bilbao

Tue 4/21

6:50 am-9:53 pm

2 stops48h 03m

$603

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Tue 4/14

7:00 am-4:00 pm

2 stops24h 00m

Bilbao

Tue 4/21

6:50 am-11:27 pm

3 stops25h 37m

$605

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Mon 8/3

8:45 am-11:25 pm

2 stops29h 40m

Bilbao

Wed 8/19

6:50 am-11:59 pm

2 stops26h 09m

$636

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Bilbao from

How to get the cheapest flight ticket from Seattle to Bilbao

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Seattle and Bilbao?

What is the cheapest month to fly to Bilbao?

The cheapest month to fly to Bilbao from Seattle is in January. Flight prices, which tend to average around $484, are often lower during this time because this is during the off-season. If you’re not able to fly to Bilbao in January, then October is your next best option. Flight prices from Seattle to Bilbao during October average around $731.

When to book flights from Seattle to Bilbao

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Bilbao according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Bilbao (SEA to BIO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Bilbao

Fastest flight time

13h 50m

Direct flights

None
The fastest flight from Seattle to Bilbao takes 13h 50m
There are no direct flights from Seattle to Bilbao. There are no popular flight routes from Seattle to Bilbao.
Search flight deals

  • How far is Seattle/Tacoma Intl to Bilbao by plane?

    The distance between Seattle/Tacoma Intl and Bilbao is about 5152.4 mi. 13h 50m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Bilbao Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Bilbao Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Bilbao Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Bilbao Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to Bilbao Airport.

  • What documentation or ID do you need to fly to Bilbao Airport?

    The travel and health documents required for your trip to Bilbao Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Bilbao Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Seattle to Bilbao?

Best airlines flying from Seattle to Bilbao

Compare and see reviews for airlines that fly from Seattle to Bilbao with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $484Free CancellationRating
7.4
9,362 reviews
Search United Airlines flights
LufthansaPriceFrom $484Free CancellationRating
6.8
7,817 reviews
Search Lufthansa flights
KLMPriceFrom $586Free CancellationRating
7.7
1,461 reviews
Search KLM flights
DeltaPriceFrom $731Free CancellationRating
7.9
8,244 reviews
Search Delta flights

Traveling to a place near Bilbao?

Book flights to Bilbao if you plan to visit one of these locations
Getxo
Laredo
Lekeitio

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Bilbao?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Bilbao from Seattle.

Can I find flights from Seattle to Bilbao with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Seattle to Bilbao flights to just show those with flexible booking policies.

How can momondo help me find flights from Seattle to Bilbao?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Bilbao from Seattle.

I’m not ready to book a flight from Seattle to Bilbao right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Seattle to Bilbao now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Bilbao and let you know when they change.

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