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Cheap flights from Seattle to Bilbao from $355

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 8/3. 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.
Multiple Airlines Logo
2:10 pm - 11:25 pm
SEA
-
BIO
24h 15m
1 stop
Multiple Airlines Logo
6:45 am - 6:22 pm
BIO
-
SEA
19h 37m
2 stops
$716Multiple Airlines
Sun, Oct 11 - Thu, Oct 29
Multiple Airlines Logo
2:10 pm - 11:25 pm
SEA
-
BIO
24h 15m
1 stop
Multiple Airlines Logo
6:45 am - 9:57 pm
BIO
-
SEA
23h 12m
2 stops
$717Multiple Airlines
Sun, Oct 11 - Thu, Oct 29
Multiple Airlines Logo
2:10 pm - 1:20 pm
SEA
-
BIO
14h 10m
1 stop
Multiple Airlines Logo
6:45 am - 6:22 pm
BIO
-
SEA
19h 37m
2 stops
$718Multiple Airlines
Sun, Oct 11 - Tue, Oct 27
Multiple Airlines Logo
2:10 pm - 5:10 pm
SEA
-
BIO
18h 00m
1 stop
Multiple Airlines Logo
6:50 am - 2:22 pm
BIO
-
SEA
16h 32m
2 stops
$720Multiple Airlines
Tue, Sep 22 - Thu, Oct 1
Lufthansa Logo
2:10 pm - 1:20 pm
SEA
-
BIO
14h 10m
1 stop
Lufthansa Logo
6:45 am - 1:00 pm
BIO
-
SEA
14h 15m
1 stop
$723Lufthansa
Sun, Oct 11 - Thu, Oct 29
Lufthansa Logo
2:10 pm - 1:20 pm
SEA
-
BIO
14h 10m
1 stop
Lufthansa Logo
7:25 am - 2:00 pm
BIO
-
SEA
14h 35m
1 stop
$725Lufthansa
Sun, Oct 11 - Wed, Oct 28
United Airlines Logo
7:30 am - 10:45 am
SEA
-
BIO
18h 15m
1 stop
United Airlines Logo
6:50 am - 12:20 pm
BIO
-
SEA
14h 30m
1 stop
$726United Airlines
Tue, Sep 22 - Thu, Oct 1
Delta Logo
6:45 pm - 5:30 pm
SEA
-
BIO
13h 45m
1 stop
Delta Logo
6:45 am - 11:47 am
BIO
-
SEA
14h 02m
1 stop
$727Delta
Sun, Sep 20 - Tue, Sep 29
Multiple Airlines Logo
8:00 am - 1:20 pm
SEA
-
BIO
20h 20m
2 stops
Multiple Airlines Logo
7:25 am - 2:00 pm
BIO
-
SEA
14h 35m
1 stop
$728Multiple Airlines
Sun, Oct 11 - Wed, Oct 28
United Airlines Logo
6:50 pm - 11:25 pm
SEA
-
BIO
19h 35m
1 stop
United Airlines Logo
6:50 am - 11:55 am
BIO
-
SEA
14h 05m
1 stop
$729United Airlines
Sun, Sep 20 - Wed, Sep 30

United Airlines flights from Seattle to Bilbao

Our best United Airlines deals on Seattle to Bilbao flight tickets
United Airlines
Sep 22
SEA7:30 amSeattle/Tacoma Intl
18h 15m
1 stop
BIO10:45 amBilbao
Oct 1
BIO6:50 amBilbao
14h 30m
1 stop
SEA12:20 pmSeattle/Tacoma Intl
$726
United Airlines
Sep 20
SEA6:50 pmSeattle/Tacoma Intl
19h 35m
1 stop
BIO11:25 pmBilbao
Sep 30
BIO6:50 amBilbao
14h 05m
1 stop
SEA11:55 amSeattle/Tacoma Intl
$729
United Airlines
Sep 21
SEA11:04 pmSeattle/Tacoma Intl
26h 41m
2 stops
BIO10:45 amBilbao
Sep 30
BIO6:50 amBilbao
20h 42m
2 stops
SEA6:32 pmSeattle/Tacoma Intl
$730

Delta flights from Seattle to Bilbao

Our best Delta deals on Seattle to Bilbao flight tickets
Delta
Sep 20
SEA6:45 pmSeattle/Tacoma Intl
13h 45m
1 stop
BIO5:30 pmBilbao
Sep 29
BIO6:45 amBilbao
14h 02m
1 stop
SEA11:47 amSeattle/Tacoma Intl
$727
Delta
Sep 22
SEA7:20 amSeattle/Tacoma Intl
25h 10m
2 stops
BIO5:30 pmBilbao
Sep 28
BIO12:00 pmBilbao
32h 47m
1 stop
SEA11:47 amSeattle/Tacoma Intl
$731
Delta
Sep 23
SEA6:45 pmSeattle/Tacoma Intl
30h 05m
1 stop
BIO9:50 amBilbao
Oct 1
BIO7:10 amBilbao
13h 05m
1 stop
SEA11:15 amSeattle/Tacoma Intl
$736

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 May 21, 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

Cheapest round-trip

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sun 10/11

2:10 pm-11:25 pm

1 stop24h 15m

Bilbao

Thu 10/29

6:45 am-6:22 pm

2 stops19h 37m

$716

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sun 10/11

2:10 pm-11:25 pm

1 stop24h 15m

Bilbao

Thu 10/29

6:45 am-9:57 pm

2 stops23h 12m

$717

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sun 10/11

2:10 pm-1:20 pm

1 stop14h 10m

Bilbao

Tue 10/27

6:45 am-6:22 pm

2 stops19h 37m

$718

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Tue 9/22

2:10 pm-5:10 pm

1 stop18h 00m

Bilbao

Thu 10/1

6:50 am-2:22 pm

2 stops16h 32m

$720

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sun 10/11

2:10 pm-1:20 pm

1 stop14h 10m

Bilbao

Thu 10/29

6:45 am-1:00 pm

1 stop14h 15m

$723

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sun 10/11

2:10 pm-1:20 pm

1 stop14h 10m

Bilbao

Wed 10/28

7:25 am-2:00 pm

1 stop14h 35m

$725

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Tue 9/22

7:30 am-10:45 am

1 stop18h 15m

Bilbao

Thu 10/1

6:50 am-12:20 pm

1 stop14h 30m

$726
Quickest round-trip

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sun 9/20

6:45 pm-5:30 pm

1 stop13h 45m

Bilbao

Tue 9/29

6:45 am-11:47 am

1 stop14h 02m

$727

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sun 10/11

8:00 am-1:20 pm

2 stops20h 20m

Bilbao

Wed 10/28

7:25 am-2:00 pm

1 stop14h 35m

$728

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sun 9/20

6:50 pm-11:25 pm

1 stop19h 35m

Bilbao

Wed 9/30

6:50 am-11:55 am

1 stop14h 05m

$729

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 February. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you’re not able to fly to Bilbao in February, then January is your next best option. Flight prices from Seattle to Bilbao during January average around $484.

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

14h 05m

Direct flights

None
The fastest flight from Seattle to Bilbao takes 14h 05m
There are no direct flights from Seattle to Bilbao. There are no popular flight routes from Seattle to Bilbao.
Search flight deals

Frequently asked questions about flying from Seattle to Bilbao

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

    The distance between Seattle/Tacoma Intl and Bilbao is about 5152.4 mi. 14h 05m 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
9,742 reviews
Search United Airlines flights
LufthansaPriceFrom $514Free CancellationRating
6.8
8,015 reviews
Search Lufthansa flights
KLMPriceFrom $586Free CancellationRating
7.8
1,518 reviews
Search KLM flights
DeltaPriceFrom $731Free CancellationRating
7.9
8,452 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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