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Cheap flights from Seattle to Bilbao from $534

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Bilbao departing on 10/27. 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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0 bags

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Find the cheapest flights from Seattle to Bilbao

Cheap round-trip flights

Multiple Airlines Logo
3:00 pm - 4:40 pmSEA-BIO
17h 40m1 stop
Multiple Airlines Logo
9:25 am - 11:15 pmBIO-SEA
22h 50m2 stops
$534Multiple Airlines
Find Deal
Mon, Oct 27 - Wed, Nov 12
Delta Logo
3:10 pm - 5:20 pmSEA-BIO
18h 10m1 stop
Delta Logo
7:25 am - 1:20 pmBIO-SEA
14h 55m1 stop
$546Delta
Find Deal
Mon, Oct 27 - Wed, Nov 12
Air Canada Logo
5:50 am - 6:05 pmSEA-BIO
27h 15m2 stops
Air Canada Logo
6:45 am - 10:06 pmBIO-SEA
24h 21m3 stops
$561Air Canada
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Sun, Nov 23 - Tue, Dec 2
United Airlines Logo
2:20 pm - 6:20 pmSEA-BIO
19h 00m1 stop
United Airlines Logo
6:45 am - 11:55 amBIO-SEA
14h 10m1 stop
$566United Airlines
Find Deal
Tue, Oct 7 - Tue, Oct 14
Lufthansa Logo
6:50 pm - 11:25 pmSEA-BIO
19h 35m1 stop
Lufthansa Logo
7:10 pm - 6:36 pmBIO-SEA
32h 26m2 stops
$575Lufthansa
Find Deal
Sun, Sep 28 - Mon, Oct 13
Air Canada Logo
8:00 pm - 6:05 pmSEA-BIO
37h 05m2 stops
Air Canada Logo
11:35 am - 7:16 pmBIO-SEA
40h 41m2 stops
$582Air Canada
Find Deal
Sat, Nov 22 - Mon, Dec 1
Lufthansa Logo
2:20 pm - 1:20 pmSEA-BIO
14h 00m1 stop
Lufthansa Logo
6:45 am - 11:55 amBIO-SEA
14h 10m1 stop
$595Lufthansa
Find Deal
Thu, Oct 16 - Thu, Oct 23
United Airlines Logo
7:00 am - 11:25 pmSEA-BIO
31h 25m2 stops
United Airlines Logo
6:45 am - 4:59 pmBIO-SEA
43h 14m2 stops
$618United Airlines
Find Deal
Tue, Oct 7 - Tue, Oct 14
KLM Logo
6:35 pm - 10:25 amSEA-BIO
30h 50m1 stop
KLM Logo
6:50 am - 4:05 pmBIO-SEA
18h 15m1 stop
$657KLM
Find Deal
Wed, Oct 1 - Fri, Oct 10
KLM Logo
1:40 pm - 5:20 pmSEA-BIO
18h 40m1 stop
KLM Logo
5:20 pm - 11:50 amBIO-SEA
27h 30m1 stop
$695KLM
Find Deal
Sat, Nov 22 - Mon, Dec 1

Air Canada flights from Seattle to Bilbao

Our best Air Canada deals on Seattle to Bilbao flight tickets
Air Canada
Nov 23
SEA5:50 amSeattle/Tacoma Intl
27h 15m
2 stops
BIO6:05 pmBilbao
Dec 2
BIO6:45 amBilbao
24h 21m
3 stops
SEA10:06 pmSeattle/Tacoma Intl
$561
Find similar
Air Canada
Nov 22
SEA8:00 pmSeattle/Tacoma Intl
37h 05m
2 stops
BIO6:05 pmBilbao
Dec 1
BIO11:35 amBilbao
40h 41m
2 stops
SEA7:16 pmSeattle/Tacoma Intl
$582
Find similar
Air Canada
Nov 15
SEA8:00 pmSeattle/Tacoma Intl
35h 40m
2 stops
BIO4:40 pmBilbao
Nov 22
BIO12:50 pmBilbao
53h 41m
2 stops
SEA9:31 amSeattle/Tacoma Intl
$635
Find similar

Lufthansa flights from Seattle to Bilbao

Our best Lufthansa deals on Seattle to Bilbao flight tickets
Lufthansa
Sep 28
SEA6:50 pmSeattle/Tacoma Intl
19h 35m
1 stop
BIO11:25 pmBilbao
Oct 13
BIO7:10 pmBilbao
32h 26m
2 stops
SEA6:36 pmSeattle/Tacoma Intl
$575
Find similar
Lufthansa
Oct 16
SEA2:20 pmSeattle/Tacoma Intl
14h 00m
1 stop
BIO1:20 pmBilbao
Oct 23
BIO6:45 amBilbao
14h 10m
1 stop
SEA11:55 amSeattle/Tacoma Intl
$595
Find similar
Lufthansa
Sep 28
SEA2:20 pmSeattle/Tacoma Intl
18h 30m
2 stops
BIO5:50 pmBilbao
Oct 13
BIO7:10 pmBilbao
28h 06m
2 stops
SEA2:16 pmSeattle/Tacoma Intl
$600
Find similar

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 September 18, 2025.
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

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Mon 10/27

3:00 pm-4:40 pm

1 stop17h 40m

Bilbao

Wed 11/12

9:25 am-11:15 pm

2 stops22h 50m

$534

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Mon 10/27

3:10 pm-5:20 pm

1 stop18h 10m

Bilbao

Wed 11/12

7:25 am-1:20 pm

1 stop14h 55m

$546

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sun 11/23

5:50 am-6:05 pm

2 stops27h 15m

Bilbao

Tue 12/2

6:45 am-10:06 pm

3 stops24h 21m

$561

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Tue 10/7

2:20 pm-6:20 pm

1 stop19h 00m

Bilbao

Tue 10/14

6:45 am-11:55 am

1 stop14h 10m

$566

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sun 9/28

6:50 pm-11:25 pm

1 stop19h 35m

Bilbao

Mon 10/13

7:10 pm-6:36 pm

2 stops32h 26m

$575

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sat 11/22

8:00 pm-6:05 pm

2 stops37h 05m

Bilbao

Mon 12/1

11:35 am-7:16 pm

2 stops40h 41m

$582

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Thu 10/16

2:20 pm-1:20 pm

1 stop14h 00m

Bilbao

Thu 10/23

6:45 am-11:55 am

1 stop14h 10m

$595

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Tue 10/7

7:00 am-11:25 pm

2 stops31h 25m

Bilbao

Tue 10/14

6:45 am-4:59 pm

2 stops43h 14m

$618

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Wed 10/1

6:35 pm-10:25 am

1 stop30h 50m

Bilbao

Fri 10/10

6:50 am-4:05 pm

1 stop18h 15m

$657

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sat 11/22

1:40 pm-5:20 pm

1 stop18h 40m

Bilbao

Mon 12/1

5:20 pm-11:50 am

1 stop27h 30m

$695

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 cheapest month to fly to Bilbao?

The cheapest month to fly to Bilbao from Seattle 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 Seattle 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 Seattle 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 Seattle 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.

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

Direct flights

None
There are no direct flights from Seattle to Bilbao. There are no popular flight routes from Seattle to Bilbao.
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  • How far is Seattle/Tacoma Intl to Bilbao by plane?

    The distance between Seattle/Tacoma Intl and Bilbao is about 5152.4 mi. 14h 00m 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 $596Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
Air FrancePriceFrom $675Free CancellationRating
7.4
1,468 reviews
Search Air France flights
KLMPriceFrom $702Free CancellationRating
7.8
1,386 reviews
Search KLM flights
DeltaPriceFrom $730Free CancellationRating
7.9
7,964 reviews
Search Delta flights
LufthansaPriceFrom $749Free CancellationRating
6.8
7,415 reviews
Search Lufthansa 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.

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