$549+ 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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — SEA
Oct 12 — Oct 191
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
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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 September 12, 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 September 12, 2026.
This Trip.com deal was found by Cheapflights users on 9/12. 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.
Tue 10/271:45 pm -
2 stops28h 51m
Tue 11/34:50 pm -
1 stop16h 45m
Deal found 9/12![Multiple Airlines logo]()
$683
This Trip.com deal was found by Cheapflights users on 9/8. 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.
Sat 10/171:50 pm -
1 stop15h 24m
Wed 10/215:30 pm -
1 stop20h 10m
Deal found 9/8![Multiple Airlines logo]()
$693
This Mytrip deal was found by Cheapflights users on 9/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/241:45 pm -
2 stops30h 30m
Mon 9/285:30 pm -
1 stop16h 05m
Deal found 9/10![Multiple Airlines logo]()
$714
This Mytrip deal was found by Cheapflights users on 9/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/181:25 pm -
2 stops30h 50m
Mon 9/285:30 pm -
1 stop16h 05m
Deal found 9/12![Multiple Airlines logo]()
$835
This Kiwi.com deal was found by Cheapflights users on 9/8. 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.
Wed 9/301:50 pm -
1 stop15h 20m
Wed 10/215:30 pm -
1 stop16h 05m
Deal found 9/8![Multiple Airlines logo]()
$859
This American Airlines deal was found by Cheapflights users on 9/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:15 am -
2 stops22h 42m
Wed 10/212:26 pm -
2 stops18h 24m
Deal found 9/8![American Airlines logo]()
$870
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 September 12, 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 September 12, 2026.
This Trip.com deal was found by Cheapflights users on 9/12. 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.
Tue 10/271:45 pm -
2 stops28h 51m
Tue 11/37:24 am -
2 stops26h 11m
Deal found 9/12![Multiple Airlines logo]()
$687
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 1/147:30 am -
2 stops22h 42m
Mon 1/181:50 pm -
1 stop18h 10m
Deal found 9/10![United Airlines logo]()
$896
This Mytrip deal was found by Cheapflights users on 9/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/206:50 am -
1 stop14h 30m
Fri 11/62:50 pm -
1 stop17h 55m
Deal found 9/9![Lufthansa logo]()
$905
This Delta deal was found by Cheapflights users on 9/9. 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 10/206:45 am -
1 stop14h 07m
Fri 11/610:39 am -
2 stops21h 46m
Deal found 9/9![Delta logo]()
$912
This Trip.com deal was found by Cheapflights users on 9/8. 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.
Sat 10/171:50 pm -
1 stop15h 24m
Wed 10/215:30 pm -
1 stop20h 10m
Deal found 9/8![Multiple Airlines logo]()
$693
This Mytrip deal was found by Cheapflights users on 9/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2411:30 am -
2 stops18h 10m
Mon 9/283:40 pm -
3 stops22h 20m
Deal found 9/10![Multiple Airlines logo]()
$825
This Delta deal was found by Cheapflights users on 9/12. 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 9/2812:00 pm -
1 stop32h 47m
Sun 10/41:30 pm -
1 stop19h 00m
Deal found 9/12![Delta logo]()
$957
This Mytrip deal was found by Cheapflights users on 9/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/75:05 pm -
2 stops32h 55m
Thu 1/72:35 pm -
3 stops22h 10m
Deal found 9/10![Multiple Airlines logo]()
$888
This KLM deal was found by Cheapflights users on 9/12. 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.
Mon 9/2812:00 pm -
1 stop13h 35m
Sun 10/46:40 pm -
1 stop18h 20m
Deal found 9/12![Multiple Airlines logo]()
$934
Last-minute flights from Bilbao to SeattleDiscover last-minute flight deals from Bilbao to Seattle. Data last updated September 12, 2026 and is based on user searches.
Discover last-minute flight deals from Bilbao to Seattle. Data last updated September 12, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 9/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/181:25 pm -
2 stops30h 50m
Mon 9/285:30 pm -
1 stop16h 05m
Deal found 9/12![Multiple Airlines logo]()
$835
This Mytrip deal was found by Cheapflights users on 9/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/241:45 pm -
2 stops30h 30m
Mon 9/285:30 pm -
1 stop16h 05m
Deal found 9/10![Multiple Airlines logo]()
$714
This Kiwi.com deal was found by Cheapflights users on 9/8. 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.
Wed 9/301:50 pm -
1 stop15h 20m
Wed 10/215:30 pm -
1 stop16h 05m
Deal found 9/8![Multiple Airlines logo]()
$859
This American Airlines deal was found by Cheapflights users on 9/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:15 am -
2 stops22h 42m
Wed 10/212:26 pm -
2 stops18h 24m
Deal found 9/8![American Airlines logo]()
$870
This Trip.com deal was found by Cheapflights users on 9/8. 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.
Sat 10/171:50 pm -
1 stop15h 24m
Wed 10/215:30 pm -
1 stop20h 10m
Deal found 9/8![Multiple Airlines logo]()
$693
This Trip.com deal was found by Cheapflights users on 9/12. 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.
Tue 10/271:45 pm -
2 stops28h 51m
Tue 11/34:50 pm -
1 stop16h 45m
Deal found 9/12![Multiple Airlines logo]()
$683
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 September 12, 2026.
Search for one-way flight options from Bilbao to Seattle. Find affordable one-way fares based on user searches. Data last updated September 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Wed 10/2110:50 pm -
3 stops52h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$549
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/221:20 pm -
3 stops38h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$556
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Mon 10/197:30 pm -
3 stops32h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$568
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Sat 10/179:40 pm -
3 stops30h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$595
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Tue 10/201:45 pm -
2 stops37h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$601
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/234:50 pm -
3 stops33h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$628
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 September 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $683 (Trip.com) |
One-way from | $549 (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 September 12, 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
BilbaoSeattle
BIO Bilbao - SEA Seattle/Tacoma Intl
BIOSEA
Bilbao
Thu 10/22
1:20 pm-6:45 pm
3 stops38h 25m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$556
BilbaoSeattle
BIO Bilbao - SEA Seattle/Tacoma Intl
BIOSEA
Bilbao
Fri 10/23
4:50 pm-5:10 pm
3 stops33h 20m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$628
BilbaoSeattle
BIO Bilbao - SEA Seattle/Tacoma Intl
BIOSEA
Bilbao
Tue 10/27
1:45 pm-10:36 am
2 stops28h 51m
Seattle/Tacoma Intl
Tue 11/3
7:24 am-6:35 pm
2 stops26h 11m
$687
BilbaoSeattle
BIO Bilbao - SEA Seattle/Tacoma Intl
BIOSEA
Bilbao
Sat 10/17
1:50 pm-8:14 pm
1 stop15h 24m
Seattle/Tacoma Intl
Wed 10/21
5:30 pm-10:40 pm
1 stop20h 10m
$693
Quickest round-trip
BilbaoSeattle
BIO Bilbao - SEA Seattle/Tacoma Intl
BIOSEA
Bilbao
Sun 10/18
7:40 am-5:10 pm
2 stops18h 30m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$742
BilbaoSeattle
BIO Bilbao - SEA Seattle/Tacoma Intl
BIOSEA
Bilbao
Thu 9/24
11:30 am-8:40 pm
2 stops18h 10m
Seattle/Tacoma Intl
Mon 9/28
3:40 pm-11:00 pm
3 stops22h 20m
$825
BilbaoSeattle
BIO Bilbao - SEA Seattle/Tacoma Intl
BIOSEA
Bilbao
Fri 10/23
12:05 pm-5:20 pm
1 stop38h 15m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$830
BilbaoSeattle
BIO Bilbao - SEA Seattle/Tacoma Intl
BIOSEA
Bilbao
Sun 10/18
6:25 pm-5:20 pm
1 stop31h 55m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$830
BilbaoSeattle
BIO Bilbao - SEA Seattle/Tacoma Intl
BIOSEA
Bilbao
Mon 12/7
5:05 pm-5:00 pm
2 stops32h 55m
Seattle/Tacoma Intl
Thu 1/7
2:35 pm-9:45 pm
3 stops22h 10m
$888
BilbaoSeattle
BIO Bilbao - SEA Seattle/Tacoma Intl
BIOSEA
Bilbao
Thu 1/14
7:30 am-9:12 pm
2 stops22h 42m
Seattle/Tacoma Intl
Mon 1/18
1:50 pm-5:00 pm
1 stop18h 10m
$896
Showing 1-10 of 14 resultsSorted by cheapest first
- 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.
Traveling to a place near Seattle?
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