How long does it take to fly to Bilbao?

Flight times from State of Washington to Bilbao vary, but if you’re flying out of Seattle and flying into Bilbao (one of the most popular routes), then the duration is 14h on average. Another popular route from State of Washington to Bilbao is flying from Pasco to Bilbao, which will take roughly 25h 30m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to Bilbao?

Lufthansa, Delta 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 39% 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.

What is the cheapest airline that flies from Washington to Bilbao?

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

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?

As of December 2025, there are 4 operators available to choose from 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.

$319 Cheap Flights from Washington to Bilbao in 2025/26

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Find the cheapest flights from Washington to Bilbao

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:10 pm - 9:55 pm

SEA

BIO

21h 45m1 stop

7:25 am - 2:20 pm

BIO

SEA

14h 55m1 stop

$455Lufthansa

Wed, Mar 4 - Wed, Mar 11

7:00 am - 11:05 pm

SEA

BIO

32h 05m2 stops

6:45 am - 1:10 pm

BIO

SEA

14h 25m1 stop

$458Lufthansa

Mon, Mar 9 - Mon, Mar 16

2:10 pm - 9:55 pm

SEA

BIO

22h 45m2 stops

7:25 am - 7:16 pm

BIO

SEA

20h 51m2 stops

$459Lufthansa

Thu, Jan 29 - Sun, Feb 8

12:32 pm - 9:10 pm

SEA

BIO

23h 38m2 stops

9:25 am - 11:28 pm

BIO

SEA

22h 03m2 stops

$472SWISS

Wed, Mar 4 - Wed, Mar 11

2:02 pm - 5:20 pm

SEA

BIO

18h 18m2 stops

6:50 am - 11:50 am

BIO

SEA

14h 00m1 stop

$475KLM

Sat, Jan 24 - Sat, Jan 31

6:50 am - 5:20 pm

PSC

BIO

25h 30m2 stops

6:50 am - 4:23 pm

BIO

PSC

18h 33m2 stops

$476KLM

Sat, Jan 24 - Sat, Jan 31

3:50 pm - 11:20 pm

PDX

BIO

22h 30m2 stops

11:35 am - 6:56 pm

BIO

PDX

40h 21m2 stops

$488United Airlines

Fri, Jan 30 - Tue, Feb 3

5:00 am - 11:20 pm

PSC

BIO

33h 20m2 stops

11:35 am - 9:13 pm

BIO

PSC

42h 38m2 stops

$498United Airlines

Fri, Jan 30 - Tue, Feb 3

7:45 pm - 5:50 pm

PDX

BIO

37h 05m2 stops

9:00 pm - 7:05 pm

BIO

PDX

31h 05m2 stops

$933Multiple Airlines

Tue, May 19 - Tue, May 26

7:45 pm - 5:10 pm

PDX

BIO

36h 25m2 stops

7:15 am - 7:05 pm

BIO

PDX

20h 50m3 stops

$1,016Multiple Airlines

Tue, May 19 - Tue, May 26

United Airlines flights from State of Washington to Bilbao

Our best United Airlines deals on State of Washington to Bilbao flight tickets

United Airlines

Jan 25

SEA8:10 amSeattle/Tacoma Intl

17h 40m

2 stops

BIO10:50 amBilbao

Feb 1

BIO7:25 amBilbao

14h 55m

1 stop

SEA1:20 pmSeattle/Tacoma Intl

$478

Find similar

United Airlines

Jan 25

SEA7:00 amSeattle/Tacoma Intl

26h 05m

2 stops

BIO6:05 pmBilbao

Feb 1

BIO7:25 amBilbao

23h 51m

2 stops

SEA10:16 pmSeattle/Tacoma Intl

$484

Find similar

United Airlines

Jan 19

SEA8:10 amSeattle/Tacoma Intl

17h 40m

2 stops

BIO10:50 amBilbao

Jan 30

BIO6:45 amBilbao

23h 27m

3 stops

SEA9:12 pmSeattle/Tacoma Intl

$486

Find similar

KLM flights from State of Washington to Bilbao

Our best KLM deals on State of Washington to Bilbao flight tickets

KLM

Jan 24

SEA2:02 pmSeattle/Tacoma Intl

18h 18m

2 stops

BIO5:20 pmBilbao

Jan 31

BIO6:50 amBilbao

14h 00m

1 stop

SEA11:50 amSeattle/Tacoma Intl

$475

Find similar

KLM

Jan 24

PSC6:50 amPasco Tri Cities

25h 30m

2 stops

BIO5:20 pmBilbao

Jan 31

BIO6:50 amBilbao

18h 33m

2 stops

PSC4:23 pmPasco Tri Cities

$476

Find similar

KLM

Jan 24

SEA2:02 pmSeattle/Tacoma Intl

18h 18m

2 stops

BIO5:20 pmBilbao

Jan 31

BIO6:50 amBilbao

19h 04m

2 stops

SEA4:54 pmSeattle/Tacoma Intl

$485

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Wed 3/4

3:10 pm-9:55 pm

1 stop21h 45m

Bilbao

Wed 3/11

7:25 am-2:20 pm

1 stop14h 55m

$455

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Mon 3/9

7:00 am-11:05 pm

2 stops32h 05m

Bilbao

Mon 3/16

6:45 am-1:10 pm

1 stop14h 25m

$458

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Thu 1/29

2:10 pm-9:55 pm

2 stops22h 45m

Bilbao

Sun 2/8

7:25 am-7:16 pm

2 stops20h 51m

$459

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Wed 3/4

12:32 pm-9:10 pm

2 stops23h 38m

Bilbao

Wed 3/11

9:25 am-11:28 pm

2 stops22h 03m

$472

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sat 1/24

2:02 pm-5:20 pm

2 stops18h 18m

Bilbao

Sat 1/31

6:50 am-11:50 am

1 stop14h 00m

$475

PascoBilbao

PSC - BIO

PSCBIO

Pasco Tri Cities

Sat 1/24

6:50 am-5:20 pm

2 stops25h 30m

Bilbao

Sat 1/31

6:50 am-4:23 pm

2 stops18h 33m

$476

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Fri 1/30

3:50 pm-11:20 pm

2 stops22h 30m

Bilbao

Tue 2/3

11:35 am-6:56 pm

2 stops40h 21m

$488

PascoBilbao

PSC - BIO

PSCBIO

Pasco Tri Cities

Fri 1/30

5:00 am-11:20 pm

2 stops33h 20m

Bilbao

Tue 2/3

11:35 am-9:13 pm

2 stops42h 38m

$498

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Tue 5/19

7:45 pm-5:50 pm

2 stops37h 05m

Bilbao

Tue 5/26

9:00 pm-7:05 pm

2 stops31h 05m

$933

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Tue 5/19

7:45 pm-5:10 pm

2 stops36h 25m

Bilbao

Tue 5/26

7:15 am-7:05 pm

3 stops20h 50m

$1,016

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

What is the cheapest month to fly to Bilbao?

The cheapest month to fly to Bilbao from State of Washington is in January. Flight prices, which tend to average around $533, 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 State of Washington to Bilbao during October average around $731.

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

The cheapest day to depart from State of Washington 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 State of Washington 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.

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 00m
Direct flights	None

The fastest flight from State of Washington to Bilbao takes 14h 00m

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?
As of December 2025, there are 4 operators available to choose from 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 Airlines	PriceFrom $484	Free Cancellation	Rating 7.4 9,095 reviews	Search United Airlines flights
Lufthansa	PriceFrom $484	Free Cancellation	Rating 6.8 7,626 reviews	Search Lufthansa flights
KLM	PriceFrom $586	Free Cancellation	Rating 7.7 1,432 reviews	Search KLM flights
Delta	PriceFrom $731	Free Cancellation	Rating 7.9 8,005 reviews	Search Delta flights

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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.