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Cheap flights from Washington to Bilbao from $302

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 3/8. 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 Washington to Bilbao

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
2:00 pm - 10:50 pm
SEA
-
BIO
23h 50m
1 stop
Lufthansa Logo
6:50 pm - 2:20 pm
BIO
-
SEA
27h 30m
1 stop
$455Lufthansa
Thu, Mar 5 - Thu, Mar 12
Lufthansa Logo
2:00 pm - 10:50 pm
SEA
-
BIO
23h 50m
1 stop
Lufthansa Logo
6:50 pm - 1:10 pm
BIO
-
SEA
26h 20m
2 stops
$500Lufthansa
Thu, Mar 5 - Thu, Mar 12
United Airlines Logo
7:15 am - 5:15 pm
PDX
-
BIO
25h 00m
2 stops
United Airlines Logo
6:50 am - 9:14 pm
BIO
-
PDX
23h 24m
2 stops
$501United Airlines
Wed, Apr 8 - Tue, Apr 21
United Airlines Logo
12:36 pm - 10:50 pm
SEA
-
BIO
25h 14m
2 stops
United Airlines Logo
12:50 pm - 11:49 am
BIO
-
SEA
30h 59m
2 stops
$501United Airlines
Thu, Mar 5 - Thu, Mar 12
Delta Logo
1:55 pm - 5:30 pm
PDX
-
BIO
18h 35m
2 stops
Delta Logo
12:00 pm - 11:10 am
BIO
-
PDX
32h 10m
1 stop
$555Delta
Tue, Mar 31 - Wed, Apr 8
Delta Logo
10:40 pm - 9:50 am
SEA
-
BIO
26h 10m
2 stops
Delta Logo
6:45 am - 4:30 pm
BIO
-
SEA
18h 45m
1 stop
$555Delta
Mon, May 4 - Fri, May 29
Multiple Airlines Logo
3:30 pm - 5:30 pm
PDX
-
BIO
17h 00m
2 stops
Multiple Airlines Logo
10:30 am - 11:55 pm
BIO
-
PDX
22h 25m
2 stops
$572Multiple Airlines
Tue, Apr 14 - Tue, May 12
Multiple Airlines Logo
3:25 pm - 5:55 pm
PDX
-
BIO
17h 30m
2 stops
Multiple Airlines Logo
6:50 am - 11:52 pm
BIO
-
PDX
26h 02m
2 stops
$580Multiple Airlines
Tue, May 19 - Tue, May 26
KLM Logo
1:05 pm - 11:15 am
PDX
-
BIO
13h 10m
1 stop
KLM Logo
5:15 pm - 11:10 am
BIO
-
PDX
26h 55m
1 stop
$656KLM
Tue, Mar 31 - Wed, Apr 8
KLM Logo
1:05 pm - 4:30 pm
PDX
-
BIO
18h 25m
1 stop
KLM Logo
12:00 pm - 7:25 pm
BIO
-
PDX
16h 25m
2 stops
$665KLM
Wed, Apr 1 - Wed, Apr 8

United Airlines flights from State of Washington to Bilbao

Our best United Airlines deals on State of Washington to Bilbao flight tickets
United Airlines
Apr 8
PDX5:00 amPortland
27h 15m
2 stops
BIO5:15 pmBilbao
Apr 21
BIO6:50 amBilbao
24h 39m
2 stops
PDX10:29 pmPortland
$501
United Airlines
Mar 24
SEA7:00 amSeattle/Tacoma Intl
30h 55m
2 stops
BIO9:55 pmBilbao
Mar 31
BIO11:55 amBilbao
41h 58m
2 stops
SEA8:53 pmSeattle/Tacoma Intl
$545
United Airlines
May 6
SEA6:50 pmSeattle/Tacoma Intl
19h 35m
1 stop
BIO11:25 pmBilbao
May 28
BIO6:50 amBilbao
14h 30m
1 stop
SEA12:20 pmSeattle/Tacoma Intl
$553

Air Canada flights from State of Washington to Bilbao

Our best Air Canada deals on State of Washington to Bilbao flight tickets
Air Canada
May 7
SEA9:55 amSeattle/Tacoma Intl
22h 05m
2 stops
BIO5:00 pmBilbao
May 28
BIO6:50 amBilbao
20h 40m
2 stops
SEA6:30 pmSeattle/Tacoma Intl
$633
Air Canada
Apr 8
PDX9:50 amPortland
22h 25m
3 stops
BIO5:15 pmBilbao
Apr 21
BIO6:50 amBilbao
20h 40m
2 stops
PDX6:30 pmPortland
$686
Air Canada
Apr 14
PDX9:50 amPortland
22h 20m
3 stops
BIO5:10 pmBilbao
May 12
BIO6:50 amBilbao
35h 40m
2 stops
PDX9:30 amPortland
$722

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 February 7, 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

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Thu 3/5

2:00 pm-10:50 pm

1 stop23h 50m

Bilbao

Thu 3/12

6:50 pm-2:20 pm

1 stop27h 30m

$455

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Thu 3/5

2:00 pm-10:50 pm

1 stop23h 50m

Bilbao

Thu 3/12

6:50 pm-1:10 pm

2 stops26h 20m

$500

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Wed 4/8

7:15 am-5:15 pm

2 stops25h 00m

Bilbao

Tue 4/21

6:50 am-9:14 pm

2 stops23h 24m

$501

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Thu 3/5

12:36 pm-10:50 pm

2 stops25h 14m

Bilbao

Thu 3/12

12:50 pm-11:49 am

2 stops30h 59m

$501

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Tue 3/31

1:55 pm-5:30 pm

2 stops18h 35m

Bilbao

Wed 4/8

12:00 pm-11:10 am

1 stop32h 10m

$555

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Mon 5/4

10:40 pm-9:50 am

2 stops26h 10m

Bilbao

Fri 5/29

6:45 am-4:30 pm

1 stop18h 45m

$555

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Tue 4/14

3:30 pm-5:30 pm

2 stops17h 00m

Bilbao

Tue 5/12

10:30 am-11:55 pm

2 stops22h 25m

$572

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Tue 5/19

3:25 pm-5:55 pm

2 stops17h 30m

Bilbao

Tue 5/26

6:50 am-11:52 pm

2 stops26h 02m

$580

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Tue 3/31

1:05 pm-11:15 am

1 stop13h 10m

Bilbao

Wed 4/8

5:15 pm-11:10 am

1 stop26h 55m

$656

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Wed 4/1

1:05 pm-4:30 pm

1 stop18h 25m

Bilbao

Wed 4/8

12:00 pm-7:25 pm

2 stops16h 25m

$665

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 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 $484, 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.

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 10m

Direct flights

None
The fastest flight from State of Washington to Bilbao takes 14h 10m
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
9,245 reviews
Search United Airlines flights
LufthansaPriceFrom $484Free CancellationRating
6.8
7,769 reviews
Search Lufthansa flights
KLMPriceFrom $586Free CancellationRating
7.7
1,450 reviews
Search KLM flights
DeltaPriceFrom $731Free CancellationRating
7.9
8,164 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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