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Cheap flights from Seattle to Bilbao from $536

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Bilbao departing on 10/22. 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

Lufthansa Logo
6:50 pm - 5:50 pmSEA-BIO
14h 00m1 stop
Lufthansa Logo
7:25 am - 2:20 pmBIO-SEA
14h 55m1 stop
$536Lufthansa
Find Deal
Wed, Oct 22 - Wed, Oct 29
Logo
5:30 am - 2:15 pmSEA-BIO
23h 45m3 stops
Logo
7:45 pm - 7:16 pmBIO-SEA
31h 31m3 stops
$545
Find Deal
Wed, Oct 22 - Wed, Oct 29
Logo
5:30 am - 2:15 pmSEA-BIO
23h 45m3 stops
Logo
7:45 pm - 1:10 pmBIO-SEA
25h 25m2 stops
$552
Find Deal
Wed, Oct 22 - Wed, Oct 29
Lufthansa Logo
6:50 pm - 5:50 pmSEA-BIO
14h 00m1 stop
Lufthansa Logo
7:25 am - 2:20 pmBIO-SEA
14h 55m1 stop
$554Lufthansa
Find Deal
Wed, Oct 22 - Wed, Oct 29
Air Canada Logo
5:30 am - 5:50 pmSEA-BIO
27h 20m2 stops
Air Canada Logo
6:45 am - 9:31 amBIO-SEA
34h 46m2 stops
$561Air Canada
Find Deal
Wed, Oct 8 - Fri, Oct 31
United Airlines Logo
8:00 am - 10:25 pmSEA-BIO
29h 25m2 stops
United Airlines Logo
6:45 am - 1:10 pmBIO-SEA
14h 25m1 stop
$569United Airlines
Find Deal
Wed, Oct 8 - Fri, Oct 31
Air Canada Logo
5:30 am - 5:50 pmSEA-BIO
27h 20m2 stops
Air Canada Logo
7:25 am - 9:31 amBIO-SEA
34h 06m3 stops
$578Air Canada
Find Deal
Wed, Oct 22 - Wed, Oct 29
United Airlines Logo
12:43 pm - 11:25 pmSEA-BIO
25h 42m2 stops
United Airlines Logo
6:45 am - 10:45 pmBIO-SEA
24h 00m2 stops
$625United Airlines
Find Deal
Thu, Oct 23 - Thu, Oct 30
Delta Logo
7:10 am - 11:15 amSEA-BIO
19h 05m2 stops
Delta Logo
6:50 am - 5:54 pmBIO-SEA
20h 04m2 stops
$680Delta
Find Deal
Fri, Sep 26 - Fri, Oct 3
Aer Lingus Logo
12:34 am - 5:30 pmSEA-BIO
31h 56m2 stops
Aer Lingus Logo
4:50 pm - 12:30 pmBIO-SEA
27h 40m2 stops
$1,129Aer Lingus
Find Deal
Tue, Oct 7 - Fri, Oct 31

Lufthansa flights from Seattle to Bilbao

Our best Lufthansa deals on Seattle to Bilbao flight tickets
Lufthansa
Oct 22
SEA6:50 pmSeattle/Tacoma Intl
14h 00m
1 stop
BIO5:50 pmBilbao
Oct 29
BIO7:25 amBilbao
14h 55m
1 stop
SEA2:20 pmSeattle/Tacoma Intl
$536
Find similar
Lufthansa
Oct 22
SEA6:50 pmSeattle/Tacoma Intl
14h 00m
1 stop
BIO5:50 pmBilbao
Oct 29
BIO7:25 amBilbao
14h 55m
1 stop
SEA2:20 pmSeattle/Tacoma Intl
$554
Find similar
Lufthansa
Oct 8
SEA6:50 pmSeattle/Tacoma Intl
19h 35m
1 stop
BIO11:25 pmBilbao
Oct 31
BIO6:45 amBilbao
14h 25m
1 stop
SEA1:10 pmSeattle/Tacoma Intl
$555
Find similar

United Airlines flights from Seattle to Bilbao

Our best United Airlines deals on Seattle to Bilbao flight tickets
United Airlines
Oct 8
SEA8:00 amSeattle/Tacoma Intl
29h 25m
2 stops
BIO10:25 pmBilbao
Oct 31
BIO6:45 amBilbao
14h 25m
1 stop
SEA1:10 pmSeattle/Tacoma Intl
$569
Find similar
United Airlines
Oct 23
SEA12:43 pmSeattle/Tacoma Intl
25h 42m
2 stops
BIO11:25 pmBilbao
Oct 30
BIO6:45 amBilbao
24h 00m
2 stops
SEA10:45 pmSeattle/Tacoma Intl
$625
Find similar
United Airlines
Oct 1
SEA8:00 amSeattle/Tacoma Intl
29h 25m
2 stops
BIO10:25 pmBilbao
Oct 10
BIO6:45 amBilbao
22h 59m
2 stops
SEA8:44 pmSeattle/Tacoma Intl
$710
Find similar

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 September 9, 2025.
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

Wed 10/22

6:50 pm-5:50 pm

1 stop14h 00m

Bilbao

Wed 10/29

7:25 am-2:20 pm

1 stop14h 55m

$536

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Wed 10/22

5:30 am-2:15 pm

3 stops23h 45m

Bilbao

Wed 10/29

7:45 pm-7:16 pm

3 stops31h 31m

$545

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Wed 10/22

5:30 am-2:15 pm

3 stops23h 45m

Bilbao

Wed 10/29

7:45 pm-1:10 pm

2 stops25h 25m

$552

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Wed 10/22

6:50 pm-5:50 pm

1 stop14h 00m

Bilbao

Wed 10/29

7:25 am-2:20 pm

1 stop14h 55m

$554

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Wed 10/8

5:30 am-5:50 pm

2 stops27h 20m

Bilbao

Fri 10/31

6:45 am-9:31 am

2 stops34h 46m

$561

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Wed 10/8

8:00 am-10:25 pm

2 stops29h 25m

Bilbao

Fri 10/31

6:45 am-1:10 pm

1 stop14h 25m

$569

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Wed 10/22

5:30 am-5:50 pm

2 stops27h 20m

Bilbao

Wed 10/29

7:25 am-9:31 am

3 stops34h 06m

$578

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Thu 10/23

12:43 pm-11:25 pm

2 stops25h 42m

Bilbao

Thu 10/30

6:45 am-10:45 pm

2 stops24h 00m

$625

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Fri 9/26

7:10 am-11:15 am

2 stops19h 05m

Bilbao

Fri 10/3

6:50 am-5:54 pm

2 stops20h 04m

$680

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Tue 10/7

12:34 am-5:30 pm

2 stops31h 56m

Bilbao

Fri 10/31

4:50 pm-12:30 pm

2 stops27h 40m

$1,129

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 cheapest month to fly to Bilbao?

The cheapest month to fly to Bilbao from Seattle is in October. Flight prices, which tend to average around $749, are often lower during this time because this is during the off-season. If you’re not able to fly to Bilbao in October, then February is your next best option. Flight prices from Seattle to Bilbao during February average around $788.

What is the cheapest day to depart on your flight to Bilbao?

The cheapest day to depart from Seattle to Bilbao is on a Monday. Travelers who choose to depart for Bilbao on a Monday will often find tickets for as low as $872. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $1,448. These prices are subject to change though, so be sure to set up a Price Alert for flights to Bilbao.

What is the cheapest time of day to depart on your flight to Bilbao?

Our most recent data shows that the best time of day to fly to Bilbao is in the morning. Flights from Seattle to Bilbao during this time can be as low as $715. At noon is when there is more demand to fly to Bilbao, so prices are often more expensive at around $1,245 per ticket.

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

Direct flights

None
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. 14h 00m 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 $596Free CancellationRating
7.4
8,943 reviews
Search United Airlines flights
Air FrancePriceFrom $675Free CancellationRating
7.4
1,469 reviews
Search Air France flights
KLMPriceFrom $702Free CancellationRating
7.8
1,386 reviews
Search KLM flights
DeltaPriceFrom $730Free CancellationRating
7.9
7,965 reviews
Search Delta flights
LufthansaPriceFrom $749Free CancellationRating
6.8
7,408 reviews
Search Lufthansa 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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