$561+ 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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — SEA
Nov 26 — Dec 31
Round-trip
1 adult, Economy
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Find cheap flights from Bilbao to Seattle with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Bilbao to Seattle
Cheapest
Best
Last-minute
One-way
Cheapest flights from Bilbao to SeattleExplore 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 October 27, 2026.
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 October 27, 2026.
This Trip.com deal was found by Cheapflights users on 10/23. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/147:50 am -
1 stop18h 10m
Mon 1/186:40 pm -
1 stop18h 15m
Deal found 10/23![Multiple Airlines logo]()
$657
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/57:50 am -
1 stop18h 10m
Mon 11/96:45 pm -
1 stop14h 50m
Deal found 10/27![Multiple Airlines logo]()
$706
This Trip.com deal was found by Cheapflights users on 10/26. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/97:50 am -
1 stop18h 10m
Sun 11/156:45 pm -
1 stop18h 50m
Deal found 10/26![Multiple Airlines logo]()
$728
This eDestinos deal was found by Cheapflights users on 10/23. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/195:15 pm -
1 stop32h 55m
Fri 1/297:05 pm -
1 stop36h 10m
Deal found 10/23![Turkish Airlines logo]()
$795
This Delta deal was found by Cheapflights users on 10/23. 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.
Thu 11/196:50 am -
1 stop13h 57m
Fri 1/299:50 am -
2 stops22h 35m
Deal found 10/23![Delta logo]()
$884
Best flights from Bilbao to SeattleDiscover carefully curated flight deals from Bilbao to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 27, 2026.
Discover carefully curated flight deals from Bilbao to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 27, 2026.
This WAYA deal was found by Cheapflights users on 10/22. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/35:05 pm -
1 stop27h 20m
Wed 2/106:45 pm -
1 stop18h 10m
Deal found 10/22![Multiple Airlines logo]()
$756
This Delta deal was found by Cheapflights users on 10/27. 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.
Tue 2/96:50 am -
1 stop13h 57m
Sun 2/213:30 pm -
1 stop16h 55m
Deal found 10/27![Delta logo]()
$859
This Trip.com deal was found by Cheapflights users on 10/23. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/145:05 pm -
2 stops32h 55m
Mon 1/182:35 pm -
3 stops34h 50m
Deal found 10/23![Multiple Airlines logo]()
$760
This Delta deal was found by Cheapflights users on 10/22. 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.
Wed 2/36:50 am -
1 stop13h 57m
Wed 2/107:15 am -
2 stops19h 15m
Deal found 10/22![Delta logo]()
$862
Last-minute flights from Bilbao to SeattleDiscover last-minute flight deals from Bilbao to Seattle. Data last updated October 27, 2026 and is based on user searches.
Discover last-minute flight deals from Bilbao to Seattle. Data last updated October 27, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/57:50 am -
1 stop18h 10m
Mon 11/96:45 pm -
1 stop14h 50m
Deal found 10/27![Multiple Airlines logo]()
$706
This Delta deal was found by Cheapflights users on 10/27. 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.
Thu 11/56:50 am -
2 stops20h 45m
Mon 11/96:00 am -
2 stops20h 30m
Deal found 10/27![Delta logo]()
$921
This Trip.com deal was found by Cheapflights users on 10/26. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/97:50 am -
1 stop18h 10m
Sun 11/156:45 pm -
1 stop18h 50m
Deal found 10/26![Multiple Airlines logo]()
$728
This Delta deal was found by Cheapflights users on 10/26. 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 11/96:50 am -
2 stops18h 40m
Sun 11/1511:30 am -
2 stops20h 55m
Deal found 10/26![Delta logo]()
$911
This eDestinos deal was found by Cheapflights users on 10/23. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/195:15 pm -
1 stop32h 55m
Fri 1/297:05 pm -
1 stop36h 10m
Deal found 10/23![Turkish Airlines logo]()
$795
This Delta deal was found by Cheapflights users on 10/23. 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.
Thu 11/196:50 am -
1 stop13h 57m
Fri 1/299:50 am -
2 stops22h 35m
Deal found 10/23![Delta logo]()
$884
One-way flights from Bilbao to SeattleSearch for one-way flight options from Bilbao to Seattle. Find affordable one-way fares based on user searches. Data last updated October 27, 2026.
Search for one-way flight options from Bilbao to Seattle. Find affordable one-way fares based on user searches. Data last updated October 27, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/212:00 pm -
3 stops41h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Multiple Airlines logo]()
$561
This KLM deal was found by Cheapflights users on 10/25. 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.
Fri 4/212:00 pm -
1 stop13h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![KLM logo]()
$602
Find 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 October 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $603 (Mytrip) |
One-way from | $561 (Kiwi.com) |
Cheapflights Fare Finder
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 7,457,451 searches. Data last updated October 27, 2026.
Use the filters below to find and compare flights from Bilbao to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
BilbaoSeattle
BIO Bilbao - SEA Seattle/Tacoma Intl
BIOSEA
Bilbao
Fri 4/2
12:00 pm-4:20 pm
1 stop13h 20m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$602
BilbaoSeattle
BIO Bilbao - SEA Seattle/Tacoma Intl
BIOSEA
Bilbao
Fri 4/2
9:15 am-11:52 pm
2 stops23h 37m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$609
BilbaoSeattle
BIO Bilbao - SEA Seattle/Tacoma Intl
BIOSEA
Bilbao
Wed 2/3
5:05 pm-11:25 am
1 stop27h 20m
Seattle/Tacoma Intl
Wed 2/10
6:45 pm-9:55 pm
1 stop18h 10m
$756
BilbaoSeattle
BIO Bilbao - SEA Seattle/Tacoma Intl
BIOSEA
Bilbao
Mon 12/14
5:05 pm-5:00 pm
2 stops32h 55m
Seattle/Tacoma Intl
Mon 1/18
2:35 pm-10:25 am
3 stops34h 50m
$760
BilbaoSeattle
BIO Bilbao - SEA Seattle/Tacoma Intl
BIOSEA
Bilbao
Tue 2/9
6:50 am-11:47 am
1 stop13h 57m
Seattle/Tacoma Intl
Sun 2/21
3:30 pm-5:25 pm
1 stop16h 55m
$859
BilbaoSeattle
BIO Bilbao - SEA Seattle/Tacoma Intl
BIOSEA
Bilbao
Wed 2/3
6:50 am-11:47 am
1 stop13h 57m
Seattle/Tacoma Intl
Wed 2/10
7:15 am-11:30 am
2 stops19h 15m
$862
Sorted by cheapest first
Compare providers for flights from Bilbao to Seattle
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Bilbao to Seattle in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Bilbao-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Bilbao-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Bilbao-Seattle flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Bilbao-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Bilbao-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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.
BIO-SEA
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.
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.
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