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$585+ Cheap flights from Bilbao (BIO) to Seattle (SEA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — SEA
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from Bilbao to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Bilbao (BIO) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 20, 2025.

Round-trip from

$585
(United Airlines)

Popular in

August

Cheapest in

February

Average price

$629
From Bilbao to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($151 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
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Find flight deals from Bilbao to Seattle

Cheapest flights from Bilbao to Seattle
Explore the most affordable flight options available from Bilbao to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This United Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/36:45 amBIO - SEA
2 stops37h 28mUnited Airlines
Mon 3/1011:25 pmSEA - BIO
2 stops27h 30mUnited Airlines
Deal found 2/20$585
This Delta deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/36:50 amBIO - SEA
1 stop13h 47mDelta
Mon 3/101:35 pmSEA - BIO
1 stop13h 55mDelta
Deal found 2/20$587
This KLM deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/66:50 amBIO - SEA
1 stop13h 47mKLM
Sun 3/91:35 pmSEA - BIO
1 stop24h 45mKLM
Deal found 2/20$605
This Expedia deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/36:45 pmBIO - SEA
1 stop27h 35mMultiple Airlines
Mon 3/106:15 amSEA - BIO
2 stops21h 30mMultiple Airlines
Deal found 2/20$687
This Air Canada deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/296:45 amBIO - SEA
2 stops21h 52mAir Canada
Thu 10/27:20 amSEA - BIO
2 stops25h 30mAir Canada
Deal found 2/20$758
This Lufthansa deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/296:35 pmBIO - SEA
1 stop31h 24mLufthansa
Thu 10/22:20 pmSEA - BIO
1 stop23h 30mLufthansa
Deal found 2/20$760
This Justfly.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/296:25 pmBIO - SEA
1 stop31h 50mTurkish Airlines
Thu 1/87:00 pmSEA - BIO
1 stop31h 10mTurkish Airlines
Deal found 2/20$820

Find flights from Bilbao to Seattle within your budget

Customize your flight search to find flights from Bilbao to Seattle 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, Cheapflights users made 2,558,603 searches. Data last updated February 20, 2025.

Fly from

Bilbao

Fly to

Seattle

Route

Depart

Return

Price

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Mon 3/3

6:45 am-11:13 am

2 stops37h 28m

Seattle/Tacoma Intl

Mon 3/10

11:25 pm-10:55 am

2 stops27h 30m

$585

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Mon 3/3

6:50 am-11:37 am

1 stop13h 47m

Seattle/Tacoma Intl

Mon 3/10

6:00 am-11:30 am

2 stops21h 30m

$587

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Thu 3/6

6:50 am-11:37 am

1 stop13h 47m

Seattle/Tacoma Intl

Sun 3/9

1:35 pm-10:20 pm

1 stop24h 45m

$605

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Mon 3/3

6:45 pm-1:20 pm

1 stop27h 35m

Seattle/Tacoma Intl

Mon 3/10

6:15 am-11:45 am

2 stops21h 30m

$687

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Thu 5/29

6:45 am-7:37 pm

2 stops21h 52m

Seattle/Tacoma Intl

Thu 10/2

7:20 am-5:50 pm

2 stops25h 30m

$758

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Thu 5/29

6:35 pm-4:59 pm

1 stop31h 24m

Seattle/Tacoma Intl

Thu 10/2

2:20 pm-10:50 pm

1 stop23h 30m

$760

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Thu 5/29

6:25 pm-5:15 pm

1 stop31h 50m

Seattle/Tacoma Intl

Thu 1/8

7:00 pm-11:10 am

1 stop31h 10m

$820

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Thu 5/29

6:25 pm-5:15 pm

1 stop31h 50m

$595

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Thu 5/29

7:55 pm-5:15 pm

2 stops30h 20m

$607

BilbaoSeattle

BIO - SEA

BIOSEA

Bilbao

Thu 5/29

7:15 am-6:25 pm

3 stops44h 10m

$1,447

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Best time to book a flight from Bilbao to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Bilbao with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Bilbao to Seattle

Get recent, data-driven insights about flights from Bilbao to Seattle including ideal travel times, pricing trends, and more.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated February 20, 2025.
Delta
8.0
Very good
8,219 reviews

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,219 reviews
Delta
8.0
Very good
8,219 reviews

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
8,219 reviews

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines
7.4
Good
8,765 reviews
Delta
8.0
Very good
8,219 reviews

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Turkish Airlines
7.3
Good
3,832 reviews
Delta
8.0
Very good
8,219 reviews

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air Canada
7.0
Good
8,748 reviews
Delta
8.0
Very good
8,219 reviews

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Bilbao to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Bilbao to Seattle round-trip?

    According to our current data, United Airlines ($585), Delta ($587), and KLM ($605) offers the cheapest pricing from Bilbao to Seattle. United Airlines is 40% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Bilbao to Seattle that include hotel bookings?

    Yes. In addition to deals on Bilbao to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Bilbao to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Bilbao to Seattle.

  • Can I find deals for business class flights from Bilbao to Seattle?

    Yes. Cheapflights offers flight deals from Bilbao to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Bilbao to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Bilbao to Seattle (average of $238). Flying from Bilbao to Seattle in July is currently the most expensive (average of $411). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Bilbao?

Book flights to Bilbao if you plan to visit one of these locations
SeaTac
Tukwila
Renton
Tacoma
Lacey
Ocean Shores
Leavenworth
Olympia
Federal Way
Centralia
Marysville
Cle Elum
Mukilteo
Aberdeen
Lakewood
Issaquah
Shoreline
Lynnwood
Shelton
Silverdale

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