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Cheap flights from Washington to Bilbao from $305

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Bilbao departing on 4/15. 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
1 adult, Economy, 0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Turkish Airlines Logo
7:10 pm - 5:20 pm
SEA
-
BIO
37h 10m
1 stop
Turkish Airlines Logo
12:10 pm - 5:15 pm
BIO
-
SEA
38h 05m
1 stop
$656Turkish Airlines
Tue, Sep 1 - Tue, Sep 8
Lufthansa Logo
6:50 pm - 11:25 pm
SEA
-
BIO
19h 35m
1 stop
Lufthansa Logo
6:50 am - 11:55 am
BIO
-
SEA
14h 05m
1 stop
$671Lufthansa
Sun, Sep 6 - Tue, Sep 29
Lufthansa Logo
6:50 pm - 11:25 pm
SEA
-
BIO
19h 35m
1 stop
Lufthansa Logo
6:50 am - 11:55 am
BIO
-
SEA
14h 05m
1 stop
$672Lufthansa
Tue, Jul 28 - Wed, Aug 26
Lufthansa Logo
6:50 pm - 11:25 pm
SEA
-
BIO
19h 35m
1 stop
Lufthansa Logo
6:50 am - 6:59 pm
BIO
-
SEA
21h 09m
2 stops
$680Lufthansa
Sun, Sep 6 - Thu, Oct 1
Turkish Airlines Logo
7:10 pm - 5:20 pm
SEA
-
BIO
37h 10m
1 stop
Turkish Airlines Logo
12:10 pm - 5:15 pm
BIO
-
SEA
38h 05m
1 stop
$681Turkish Airlines
Tue, Sep 1 - Tue, Sep 8
Scandinavian Airlines Logo
7:15 am - 11:35 am
SEA
-
BIO
43h 20m
2 stops
Scandinavian Airlines Logo
7:35 pm - 1:45 pm
BIO
-
SEA
27h 10m
1 stop
$689Scandinavian Airlines
Sat, May 2 - Fri, May 22
Scandinavian Airlines Logo
7:15 am - 11:35 am
SEA
-
BIO
43h 20m
2 stops
Scandinavian Airlines Logo
7:35 pm - 1:45 pm
BIO
-
SEA
27h 10m
1 stop
$690Scandinavian Airlines
Sat, May 2 - Fri, May 22
Multiple Airlines Logo
1:34 pm - 11:15 pm
PDX
-
BIO
24h 41m
2 stops
Multiple Airlines Logo
9:35 pm - 11:22 pm
BIO
-
PDX
34h 47m
2 stops
$832Multiple Airlines
Mon, Aug 3 - Mon, Aug 17
Finnair Logo
6:22 am - 11:15 pm
PDX
-
BIO
31h 53m
2 stops
Finnair Logo
6:45 am - 10:47 pm
BIO
-
PDX
25h 02m
2 stops
$850Finnair
Mon, May 4 - Mon, May 11
British Airways Logo
5:20 am - 4:55 pm
PDX
-
BIO
26h 35m
2 stops
British Airways Logo
9:15 am - 11:22 pm
BIO
-
PDX
23h 07m
2 stops
$896British Airways
Fri, Aug 7 - Fri, Aug 21

Lufthansa flights from State of Washington to Bilbao

Our best Lufthansa deals on State of Washington to Bilbao flight tickets
Lufthansa
Sep 6
SEA6:50 pmSeattle/Tacoma Intl
19h 35m
1 stop
BIO11:25 pmBilbao
Sep 29
BIO6:50 amBilbao
14h 05m
1 stop
SEA11:55 amSeattle/Tacoma Intl
$671
Lufthansa
Jul 28
SEA6:50 pmSeattle/Tacoma Intl
19h 35m
1 stop
BIO11:25 pmBilbao
Aug 26
BIO6:50 amBilbao
14h 05m
1 stop
SEA11:55 amSeattle/Tacoma Intl
$672
Lufthansa
Sep 6
SEA6:50 pmSeattle/Tacoma Intl
19h 35m
1 stop
BIO11:25 pmBilbao
Oct 1
BIO6:50 amBilbao
21h 09m
2 stops
SEA6:59 pmSeattle/Tacoma Intl
$680

Scandinavian Airlines flights from State of Washington to Bilbao

Our best Scandinavian Airlines deals on State of Washington to Bilbao flight tickets
Scandinavian Airlines
May 2
SEA7:15 amSeattle/Tacoma Intl
43h 20m
2 stops
BIO11:35 amBilbao
May 22
BIO7:35 pmBilbao
27h 10m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
$689
Scandinavian Airlines
May 2
SEA7:15 amSeattle/Tacoma Intl
43h 20m
2 stops
BIO11:35 amBilbao
May 22
BIO7:35 pmBilbao
27h 10m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
$690

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington 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 March 24, 2026.
Use the filters below to find and compare flights from Washington 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

Tue 9/1

7:10 pm-5:20 pm

1 stop37h 10m

Bilbao

Tue 9/8

12:10 pm-5:15 pm

1 stop38h 05m

$656
Quickest round-trip

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sun 9/6

6:50 pm-11:25 pm

1 stop19h 35m

Bilbao

Tue 9/29

6:50 am-11:55 am

1 stop14h 05m

$671

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Tue 7/28

6:50 pm-11:25 pm

1 stop19h 35m

Bilbao

Wed 8/26

6:50 am-11:55 am

1 stop14h 05m

$672

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sun 9/6

6:50 pm-11:25 pm

1 stop19h 35m

Bilbao

Thu 10/1

6:50 am-6:59 pm

2 stops21h 09m

$680

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Tue 9/1

7:10 pm-5:20 pm

1 stop37h 10m

Bilbao

Tue 9/8

12:10 pm-5:15 pm

1 stop38h 05m

$681

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sat 5/2

7:15 am-11:35 am

2 stops43h 20m

Bilbao

Fri 5/22

7:35 pm-1:45 pm

1 stop27h 10m

$689

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sat 5/2

7:15 am-11:35 am

2 stops43h 20m

Bilbao

Fri 5/22

7:35 pm-1:45 pm

1 stop27h 10m

$690

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Mon 8/3

1:34 pm-11:15 pm

2 stops24h 41m

Bilbao

Mon 8/17

9:35 pm-11:22 pm

2 stops34h 47m

$832

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Mon 5/4

6:22 am-11:15 pm

2 stops31h 53m

Bilbao

Mon 5/11

6:45 am-10:47 pm

2 stops25h 02m

$850

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Fri 8/7

5:20 am-4:55 pm

2 stops26h 35m

Bilbao

Fri 8/21

9:15 am-11:22 pm

2 stops23h 07m

$896

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 State of Washington 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 airline that flies from Washington to Bilbao?

United Airlines, Iberia, and KLM are the most popular carriers operating from Washington to Bilbao

What airlines fly to Bilbao?

Lufthansa, United Airlines and KLM are the top three most popular airlines that fly to Bilbao from State of Washington according to our data. Lufthansa is the first choice among our users, with 52% of people opting to fly with this airline when traveling to Bilbao. Keep in mind that there are 4 different airlines that fly to Bilbao on a routine basis, so you have a few additional options to choose from.

Cheap State of Washington to Bilbao flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Bilbao

Fastest flight time

14h 05m

Direct flights

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

  • When did momondo last update prices for flights from Washington to Bilbao Airport?

    Prices for flights from Washington to Bilbao Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Washington to Bilbao Airport?

  • How old do you have to be to fly from Washington to Bilbao Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington to Bilbao Airport.

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

    The necessary travel and health documents for your Bilbao Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from State of Washington to Bilbao

Compare and see reviews for airlines that fly from State of Washington to Bilbao with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $484Free CancellationRating
7.4
9,471 reviews
Search United Airlines flights
LufthansaPriceFrom $484Free CancellationRating
6.8
7,864 reviews
Search Lufthansa flights
KLMPriceFrom $581Free CancellationRating
7.8
1,477 reviews
Search KLM flights
DeltaPriceFrom $654Free CancellationRating
7.9
8,324 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 Washington to Bilbao?

It is quick and easy to find Washington to Bilbao flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Bilbao that suits you.

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

Yes. momondo enables you to select and highlight flights to Bilbao from Washington with this policy.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington to Bilbao.

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

Yes momondo offers price alerts on flights to Bilbao from Washington. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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