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

Lufthansa, KLM, and Turkish Airlines are the most popular carriers operating from Washington to Bilbao

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 17h 55m on average. Another popular route from State of Washington to Bilbao is flying from Pasco to Bilbao, which will take roughly 31h 55m. 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 38% 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.

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 October 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.

$344 Cheap Flights from Washington to Bilbao in 2025/26

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Cheap round-trip flights

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10:05 am - 9:55 pmSEA-BIO

26h 50m2 stops

6:45 am - 12:10 pmBIO-SEA

14h 25m1 stop

$515Lufthansa

Find Deal

Tue, Nov 18 - Tue, Nov 25

10:05 am - 9:55 pmSEA-BIO

26h 50m2 stops

7:40 am - 7:16 pmBIO-SEA

20h 36m2 stops

$517Lufthansa

Find Deal

Tue, Nov 18 - Tue, Nov 25

5:50 am - 9:55 pmSEA-BIO

31h 05m2 stops

6:45 am - 10:06 pmBIO-SEA

24h 21m3 stops

$519Multiple Airlines

Find Deal

Tue, Nov 18 - Tue, Nov 25

1:40 pm - 11:30 amSEA-BIO

12h 50m1 stop

6:50 am - 11:45 amBIO-SEA

13h 55m1 stop

$520KLM

Find Deal

Tue, Nov 18 - Tue, Nov 25

10:05 am - 12:05 pmSEA-BIO

17h 00m2 stops

7:25 am - 10:16 pmBIO-SEA

23h 51m2 stops

$521Multiple Airlines

Find Deal

Wed, Nov 19 - Wed, Nov 26

7:30 am - 5:20 pmPDX-BIO

24h 50m2 stops

11:55 am - 11:25 amBIO-PDX

32h 30m1 stop

$524Delta

Find Deal

Mon, Nov 3 - Thu, Nov 13

3:10 pm - 6:05 pmSEA-BIO

17h 55m1 stop

6:45 am - 8:54 pmBIO-SEA

23h 09m2 stops

$525United Airlines

Find Deal

Sun, Nov 2 - Sat, Nov 15

1:25 pm - 4:30 pmPDX-BIO

18h 05m1 stop

6:50 am - 11:25 amBIO-PDX

13h 35m1 stop

$526KLM

Find Deal

Wed, Nov 5 - Fri, Nov 14

7:12 am - 11:20 amPDX-BIO

19h 08m2 stops

11:55 am - 11:25 amBIO-PDX

32h 30m1 stop

$531Delta

Find Deal

Tue, Nov 4 - Tue, Nov 11

5:00 am - 9:55 pmPDX-BIO

31h 55m2 stops

6:45 am - 10:51 pmBIO-PDX

25h 06m2 stops

$533United Airlines

Find Deal

Sun, Nov 2 - Sun, Nov 16

Delta flights from State of Washington to Bilbao

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

Delta

Nov 3

PDX7:30 amPortland

24h 50m

2 stops

BIO5:20 pmBilbao

Nov 13

BIO11:55 amBilbao

32h 30m

1 stop

PDX11:25 amPortland

$524

Find similar

Delta

Nov 4

PDX7:12 amPortland

19h 08m

2 stops

BIO11:20 amBilbao

Nov 11

BIO11:55 amBilbao

32h 30m

1 stop

PDX11:25 amPortland

$531

Find similar

Delta

Nov 5

PDX1:25 pmPortland

12h 55m

1 stop

BIO11:20 amBilbao

Nov 11

BIO6:50 amBilbao

24h 51m

2 stops

PDX10:41 pmPortland

$536

Find similar

United Airlines flights from State of Washington to Bilbao

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

United Airlines

Nov 2

SEA3:10 pmSeattle/Tacoma Intl

17h 55m

1 stop

BIO6:05 pmBilbao

Nov 15

BIO6:45 amBilbao

23h 09m

2 stops

SEA8:54 pmSeattle/Tacoma Intl

$525

Find similar

United Airlines

Nov 2

PDX5:00 amPortland

31h 55m

2 stops

BIO9:55 pmBilbao

Nov 16

BIO6:45 amBilbao

25h 06m

2 stops

PDX10:51 pmPortland

$533

Find similar

United Airlines

Nov 4

PDX3:54 pmPortland

21h 01m

2 stops

BIO9:55 pmBilbao

Nov 17

BIO11:35 amBilbao

21h 51m

2 stops

PDX12:26 amPortland

$535

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Tue 11/18

10:05 am-9:55 pm

2 stops26h 50m

Bilbao

Tue 11/25

6:45 am-12:10 pm

1 stop14h 25m

$515

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Tue 11/18

10:05 am-9:55 pm

2 stops26h 50m

Bilbao

Tue 11/25

7:40 am-7:16 pm

2 stops20h 36m

$517

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Tue 11/18

5:50 am-9:55 pm

2 stops31h 05m

Bilbao

Tue 11/25

6:45 am-10:06 pm

3 stops24h 21m

$519

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Tue 11/18

1:40 pm-11:30 am

1 stop12h 50m

Bilbao

Tue 11/25

6:50 am-11:45 am

1 stop13h 55m

$520

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Wed 11/19

10:05 am-12:05 pm

2 stops17h 00m

Bilbao

Wed 11/26

7:25 am-10:16 pm

2 stops23h 51m

$521

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Mon 11/3

7:30 am-5:20 pm

2 stops24h 50m

Bilbao

Thu 11/13

11:55 am-11:25 am

1 stop32h 30m

$524

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sun 11/2

3:10 pm-6:05 pm

1 stop17h 55m

Bilbao

Sat 11/15

6:45 am-8:54 pm

2 stops23h 09m

$525

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Wed 11/5

1:25 pm-4:30 pm

1 stop18h 05m

Bilbao

Fri 11/14

6:50 am-11:25 am

1 stop13h 35m

$526

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Tue 11/4

7:12 am-11:20 am

2 stops19h 08m

Bilbao

Tue 11/11

11:55 am-11:25 am

1 stop32h 30m

$531

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Sun 11/2

5:00 am-9:55 pm

2 stops31h 55m

Bilbao

Sun 11/16

6:45 am-10:51 pm

2 stops25h 06m

$533

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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 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 State of Washington 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 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

Direct flights	None

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 October 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 $596	Free Cancellation	Rating 7.4 8,957 reviews	Search United Airlines flights
Delta	PriceFrom $730	Free Cancellation	Rating 7.9 7,970 reviews	Search Delta flights
Lufthansa	PriceFrom $749	Free Cancellation	Rating 6.8 7,457 reviews	Search Lufthansa flights
KLM	PriceFrom $765	Free Cancellation	Rating 7.7 1,396 reviews	Search KLM flights

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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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Cheap flights from Washington to Bilbao from $344

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 11/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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

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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 month to fly to Bilbao?

What is the cheapest day to depart on your flight 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.

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

Lufthansa, KLM, and Turkish Airlines are the most popular carriers operating from Washington to Bilbao

What airlines fly to Bilbao?

How long does it take to fly to Bilbao?

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

Direct flights

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

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?

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

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

Traveling to a place near Bilbao?

Why use momondo?

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

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

How can momondo help me find flights 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?

An easier way to manage your Bilbao trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Spain

Airports servicing Basque Country