Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Seattle to Bilbao from $369

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 9/22. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Bilbao

Cheap round-trip flights

Enter your travel dates to find the best prices.
KLM Logo
7:20 am - 11:50 am
SEA
-
BIO
19h 30m
2 stops
KLM Logo
6:50 am - 11:50 am
BIO
-
SEA
14h 00m
1 stop
$715KLM
Tue, Jan 19 - Fri, Jan 22
KLM Logo
7:20 am - 11:50 am
SEA
-
BIO
19h 30m
2 stops
KLM Logo
6:50 am - 4:35 pm
BIO
-
SEA
18h 45m
2 stops
$725KLM
Tue, Jan 19 - Fri, Jan 22
United Airlines Logo
2:50 pm - 9:55 pm
SEA
-
BIO
22h 05m
1 stop
United Airlines Logo
6:45 am - 12:00 pm
BIO
-
SEA
14h 15m
1 stop
$728United Airlines
Sun, Jan 24 - Thu, Jan 28
United Airlines Logo
7:00 am - 4:10 pm
SEA
-
BIO
24h 10m
2 stops
United Airlines Logo
6:45 am - 12:00 pm
BIO
-
SEA
14h 15m
1 stop
$733United Airlines
Sun, Jan 24 - Thu, Jan 28
Multiple Airlines Logo
10:10 am - 5:00 pm
SEA
-
BIO
21h 50m
3 stops
Multiple Airlines Logo
6:45 am - 6:22 pm
BIO
-
SEA
20h 37m
2 stops
$745Multiple Airlines
Tue, Jan 19 - Fri, Jan 22
Air Canada Logo
10:10 am - 5:00 pm
SEA
-
BIO
21h 50m
3 stops
Air Canada Logo
6:45 am - 9:27 am
BIO
-
SEA
35h 42m
3 stops
$752Air Canada
Tue, Jan 19 - Fri, Jan 22
Lufthansa Logo
6:50 pm - 11:25 pm
SEA
-
BIO
19h 35m
1 stop
Lufthansa Logo
6:50 am - 12:20 pm
BIO
-
SEA
14h 30m
1 stop
$768Lufthansa
Sun, Oct 11 - Wed, Oct 21
Lufthansa Logo
6:50 pm - 5:55 pm
SEA
-
BIO
14h 05m
1 stop
Lufthansa Logo
6:45 am - 12:20 pm
BIO
-
SEA
14h 35m
1 stop
$768Lufthansa
Sun, Sep 27 - Fri, Oct 9
Delta Logo
1:30 pm - 5:30 pm
SEA
-
BIO
19h 00m
1 stop
Delta Logo
12:00 pm - 11:52 am
BIO
-
SEA
32h 52m
1 stop
$790Delta
Tue, Sep 29 - Mon, Oct 12
Delta Logo
1:30 pm - 5:30 pm
SEA
-
BIO
19h 00m
1 stop
Delta Logo
6:45 am - 4:35 pm
BIO
-
SEA
18h 50m
1 stop
$790Delta
Sun, Sep 27 - Fri, Oct 9

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

United Airlines flights from Seattle to Bilbao

Our best United Airlines deals on Seattle to Bilbao flight tickets
United Airlines
Jan 24
SEA2:50 pmSeattle/Tacoma Intl
22h 05m
1 stop
BIO9:55 pmBilbao
Jan 28
BIO6:45 amBilbao
14h 15m
1 stop
SEA12:00 pmSeattle/Tacoma Intl
$728
United Airlines
Jan 24
SEA7:00 amSeattle/Tacoma Intl
24h 10m
2 stops
BIO4:10 pmBilbao
Jan 28
BIO6:45 amBilbao
14h 15m
1 stop
SEA12:00 pmSeattle/Tacoma Intl
$733
United Airlines
Jan 24
SEA7:00 amSeattle/Tacoma Intl
24h 10m
2 stops
BIO4:10 pmBilbao
Jan 28
BIO6:45 amBilbao
24h 44m
2 stops
SEA10:29 pmSeattle/Tacoma Intl
$742

Lufthansa flights from Seattle to Bilbao

Our best Lufthansa deals on Seattle to Bilbao flight tickets
Lufthansa
Sep 27
SEA6:50 pmSeattle/Tacoma Intl
14h 05m
1 stop
BIO5:55 pmBilbao
Oct 9
BIO6:45 amBilbao
14h 35m
1 stop
SEA12:20 pmSeattle/Tacoma Intl
$768
Lufthansa
Sep 27
SEA6:50 pmSeattle/Tacoma Intl
14h 05m
1 stop
BIO5:55 pmBilbao
Oct 8
BIO6:50 amBilbao
14h 30m
1 stop
SEA12:20 pmSeattle/Tacoma Intl
$772
Lufthansa
Sep 27
SEA6:50 pmSeattle/Tacoma Intl
14h 05m
1 stop
BIO5:55 pmBilbao
Oct 8
BIO6:50 amBilbao
14h 30m
1 stop
SEA12:20 pmSeattle/Tacoma Intl
$776

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 August 1, 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

Tue 1/19

7:20 am-11:50 am

2 stops19h 30m

Bilbao

Fri 1/22

6:50 am-11:50 am

1 stop14h 00m

$715

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Tue 1/19

7:20 am-11:50 am

2 stops19h 30m

Bilbao

Fri 1/22

6:50 am-4:35 pm

2 stops18h 45m

$725

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sun 1/24

2:50 pm-9:55 pm

1 stop22h 05m

Bilbao

Thu 1/28

6:45 am-12:00 pm

1 stop14h 15m

$728

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sun 1/24

7:00 am-4:10 pm

2 stops24h 10m

Bilbao

Thu 1/28

6:45 am-12:00 pm

1 stop14h 15m

$733

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Tue 1/19

10:10 am-5:00 pm

3 stops21h 50m

Bilbao

Fri 1/22

6:45 am-6:22 pm

2 stops20h 37m

$745

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Tue 1/19

10:10 am-5:00 pm

3 stops21h 50m

Bilbao

Fri 1/22

6:45 am-9:27 am

3 stops35h 42m

$752

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sun 10/11

6:50 pm-11:25 pm

1 stop19h 35m

Bilbao

Wed 10/21

6:50 am-12:20 pm

1 stop14h 30m

$768
Quickest round-trip

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sun 9/27

6:50 pm-5:55 pm

1 stop14h 05m

Bilbao

Fri 10/9

6:45 am-12:20 pm

1 stop14h 35m

$768

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Tue 9/29

1:30 pm-5:30 pm

1 stop19h 00m

Bilbao

Mon 10/12

12:00 pm-11:52 am

1 stop32h 52m

$790

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sun 9/27

1:30 pm-5:30 pm

1 stop19h 00m

Bilbao

Fri 10/9

6:45 am-4:35 pm

1 stop18h 50m

$790

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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?

Prices are currently low for flights on this route.

Typical prices usually range from $877 to $1,477.
The lowest price recently found on this route was $715.

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.

How far in advance should I book a flight from Seattle to Bilbao?

You are more likely to see cheaper flights to Bilbao from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Bilbao for around $853 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bilbao from Seattle for as low as $742 on momondo.

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
10,063 reviews
Search United Airlines flights
LufthansaPriceFrom $522Free CancellationRating
6.8
8,168 reviews
Search Lufthansa flights
KLMPriceFrom $581Free CancellationRating
7.8
1,552 reviews
Search KLM flights
DeltaPriceFrom $654Free CancellationRating
7.8
8,498 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.

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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 8/31
Mon 9/7
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Spain

Airports servicing Basque Country

San Sebastián Airport