$340+ Cheap flights from Seattle (SEA) to Bilbao (BIO)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BIO
Jun 10 — Jun 171
Round-trip
1 adult, Economy
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Cheapest flights from Seattle to BilbaoExplore the most affordable flight options available from Seattle to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 11, 2026.
Explore the most affordable flight options available from Seattle to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 11, 2026.
This Gotogate deal was found by Cheapflights users on 5/7. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/142:10 pm
SEA
- BIO
1 stop18h 05m
Multiple Airlines
Fri 10/236:45 am
BIO
- SEA
2 stops24h 57m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$711
This FlightHub deal was found by Cheapflights users on 5/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:50 pm
SEA
- BIO
1 stop19h 35m
Lufthansa
Fri 10/236:45 am
BIO
- SEA
1 stop14h 35m
Lufthansa
Deal found 5/7![Lufthansa logo]()
$728
This United Airlines deal was found by Cheapflights users on 5/7. 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.
Wed 10/143:30 pm
SEA
- BIO
2 stops22h 55m
United Airlines
Fri 10/236:45 am
BIO
- SEA
2 stops24h 57m
United Airlines
Deal found 5/7![United Airlines logo]()
$733
This United Airlines deal was found by Cheapflights users on 5/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/168:00 am
SEA
- BIO
2 stops30h 05m
United Airlines
Thu 11/196:45 am
BIO
- SEA
1 stop14h 25m
United Airlines
Deal found 5/8![United Airlines logo]()
$734
This Gotogate deal was found by Cheapflights users on 5/7. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/162:10 pm
SEA
- BIO
1 stop23h 15m
Multiple Airlines
Wed 9/306:50 am
BIO
- SEA
2 stops16h 32m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$746
This FlightHub deal was found by Cheapflights users on 5/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:50 pm
SEA
- BIO
1 stop19h 35m
Multiple Airlines
Tue 9/298:55 pm
BIO
- SEA
2 stops30h 37m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$755
This Air France deal was found by Cheapflights users on 5/9. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:40 pm
SEA
- BIO
1 stop18h 20m
Multiple Airlines
Thu 8/2012:00 pm
BIO
- SEA
1 stop32h 37m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$757
This FlightHub deal was found by Cheapflights users on 5/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:50 pm
SEA
- BIO
1 stop19h 35m
Lufthansa
Wed 9/306:50 am
BIO
- SEA
1 stop14h 05m
Lufthansa
Deal found 5/7![Lufthansa logo]()
$758
This United Airlines deal was found by Cheapflights users on 5/7. 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.
Wed 9/163:33 pm
SEA
- BIO
2 stops22h 52m
United Airlines
Wed 9/306:50 am
BIO
- SEA
2 stops16h 32m
United Airlines
Deal found 5/7![United Airlines logo]()
$763
This United Airlines deal was found by Cheapflights users on 5/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/165:00 am
SEA
- BIO
2 stops27h 55m
United Airlines
Thu 8/2011:55 am
BIO
- SEA
1 stop14h 04m
United Airlines
Deal found 5/9![United Airlines logo]()
$765
This Cheapflightsfares deal was found by Cheapflights users on 5/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/11:57 pm
SEA
- BIO
2 stops24h 08m
Lufthansa
Tue 9/811:55 am
BIO
- SEA
1 stop14h 04m
Lufthansa
Deal found 5/9![Lufthansa logo]()
$768
Best flights from Seattle to BilbaoDiscover carefully curated flight deals from Seattle to Bilbao that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 11, 2026.
Discover carefully curated flight deals from Seattle to Bilbao that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 11, 2026.
This United Airlines deal was found by Cheapflights users on 5/6. 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.
Sun 10/112:10 pm
SEA
- BIO
1 stop14h 10m
United Airlines
Wed 10/146:50 am
BIO
- SEA
1 stop14h 30m
United Airlines
Deal found 5/6![United Airlines logo]()
$741
This Finnair deal was found by Cheapflights users on 5/7. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/12:06 pm
SEA
- BIO
2 stops24h 09m
Multiple Airlines
Tue 9/86:45 am
BIO
- SEA
2 stops26h 05m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$811
This Lufthansa deal was found by Cheapflights users on 5/6. 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.
Wed 9/22:10 pm
SEA
- BIO
1 stop23h 15m
Lufthansa
Mon 9/216:40 pm
BIO
- SEA
1 stop31h 19m
Lufthansa
Deal found 5/6![Lufthansa logo]()
$833
This Delta deal was found by Cheapflights users on 5/6. 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 8/317:20 am
SEA
- BIO
2 stops18h 55m
Delta
Sun 9/137:10 am
BIO
- SEA
1 stop13h 05m
Delta
Deal found 5/6![Delta logo]()
$911
This United Airlines deal was found by Cheapflights users on 5/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/282:10 pm
SEA
- BIO
1 stop23h 15m
United Airlines
Sat 10/176:50 am
BIO
- SEA
2 stops36h 02m
United Airlines
Deal found 5/9![United Airlines logo]()
$791
This KLM deal was found by Cheapflights users on 5/6. 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 8/316:40 pm
SEA
- BIO
1 stop18h 20m
Multiple Airlines
Sun 9/137:10 am
BIO
- SEA
1 stop13h 05m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$902
This United Airlines deal was found by Cheapflights users on 5/10. 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.
Mon 8/3111:04 pm
SEA
- BIO
2 stops33h 51m
United Airlines
Sun 9/136:50 am
BIO
- SEA
2 stops24h 52m
United Airlines
Deal found 5/10![United Airlines logo]()
$855
This United Airlines deal was found by Cheapflights users on 5/6. 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.
Sun 8/306:50 pm
SEA
- BIO
1 stop19h 35m
United Airlines
Sat 9/126:50 am
BIO
- SEA
1 stop14h 05m
United Airlines
Deal found 5/6![United Airlines logo]()
$896
This United Airlines deal was found by Cheapflights users on 5/6. 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.
Fri 9/46:50 pm
SEA
- BIO
1 stop19h 35m
United Airlines
Sun 9/207:40 am
BIO
- SEA
1 stop18h 19m
United Airlines
Deal found 5/6![United Airlines logo]()
$901
Last-minute flights from Seattle to BilbaoDiscover last-minute flight deals from Seattle to Bilbao. Data last updated May 11, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Bilbao. Data last updated May 11, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 5/6. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/172:10 pm
SEA
- BIO
1 stop17h 50m
Lufthansa
Sat 5/306:50 am
BIO
- SEA
1 stop14h 30m
Lufthansa
Deal found 5/6![Lufthansa logo]()
$877
This Cheapflightsfares deal was found by Cheapflights users on 5/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1810:45 am
SEA
- BIO
2 stops24h 20m
SWISS
Thu 5/288:45 pm
BIO
- SEA
2 stops31h 20m
SWISS
Deal found 5/6![SWISS logo]()
$920
This Gotogate deal was found by Cheapflights users on 5/9. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/185:50 am
SEA
- BIO
2 stops27h 05m
Multiple Airlines
Thu 5/286:50 am
BIO
- SEA
1 stop14h 30m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$939
This Cheapflightsfares deal was found by Cheapflights users on 5/5. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1810:45 am
SEA
- BIO
2 stops22h 10m
Lufthansa
Thu 5/286:50 am
BIO
- SEA
2 stops20h 40m
Lufthansa
Deal found 5/5![Lufthansa logo]()
$943
This Delta deal was found by Cheapflights users on 5/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/611:00 pm
SEA
- BIO
2 stops27h 15m
Delta
Fri 8/216:45 am
BIO
- SEA
1 stop13h 52m
Delta
Deal found 5/8![Delta logo]()
$947
This Delta deal was found by Cheapflights users on 5/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/76:50 pm
SEA
- BIO
1 stop13h 40m
Delta
Fri 8/216:45 am
BIO
- SEA
1 stop13h 52m
Delta
Deal found 5/8![Delta logo]()
$938
This Kiwi.com deal was found by Cheapflights users on 5/8. 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.
Mon 6/810:45 am
SEA
- BIO
2 stops17h 35m
Lufthansa
Fri 8/217:15 am
BIO
- SEA
1 stop18h 44m
Lufthansa
Deal found 5/8![Lufthansa logo]()
$909
This Delta deal was found by Cheapflights users on 5/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/86:50 pm
SEA
- BIO
1 stop30h 00m
Delta
Wed 8/196:45 am
BIO
- SEA
1 stop13h 52m
Delta
Deal found 5/8![Delta logo]()
$940
This United Airlines deal was found by Cheapflights users on 5/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/106:50 pm
SEA
- BIO
1 stop14h 05m
United Airlines
Thu 8/2011:55 am
BIO
- SEA
1 stop14h 04m
United Airlines
Deal found 5/8![United Airlines logo]()
$942
This United Airlines deal was found by Cheapflights users on 5/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/106:50 pm
SEA
- BIO
1 stop14h 05m
United Airlines
Fri 8/216:45 am
BIO
- SEA
2 stops23h 56m
United Airlines
Deal found 5/8![United Airlines logo]()
$948
One-way flights from Seattle to BilbaoSearch for one-way flight options from Seattle to Bilbao. Find affordable one-way fares based on user searches. Data last updated May 11, 2026.
Search for one-way flight options from Seattle to Bilbao. Find affordable one-way fares based on user searches. Data last updated May 11, 2026.
This Gotogate deal was found by Cheapflights users on 5/8. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/276:50 pm
SEA
- BIO
1 stop19h 35m
Lufthansa
Deal found 5/8![Lufthansa logo]()
$340
This KLM deal was found by Cheapflights users on 5/8. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/285:40 pm
SEA
- BIO
1 stop13h 50m
KLM
Deal found 5/8![KLM logo]()
$351
This United Airlines deal was found by Cheapflights users on 5/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/275:00 am
SEA
- BIO
2 stops33h 25m
United Airlines
Deal found 5/8![United Airlines logo]()
$354
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 9/117:00 pm
SEA
- BIO
3 stops29h 20m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$369
This Mytrip deal was found by Cheapflights users on 5/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:50 pm
SEA
- BIO
1 stop14h 05m
Lufthansa
Deal found 5/8![Lufthansa logo]()
$387
This Finnair deal was found by Cheapflights users on 5/6. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/22:06 pm
SEA
- BIO
2 stops24h 09m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$391
This United Airlines deal was found by Cheapflights users on 5/6. 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.
Wed 9/27:00 am
SEA
- BIO
2 stops30h 25m
United Airlines
Deal found 5/6![United Airlines logo]()
$397
This Priceline deal was found by Cheapflights users on 5/8. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:40 am
SEA
- BIO
2 stops27h 15m
Air Canada
Deal found 5/8![Air Canada logo]()
$400
This Kiwi.com deal was found by Cheapflights users on 5/8. 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.
Mon 9/283:40 pm
SEA
- BIO
3 stops20h 55m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$407
This Mytrip deal was found by Cheapflights users on 5/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/273:40 pm
SEA
- BIO
3 stops31h 35m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$419
This United Airlines deal was found by Cheapflights users on 5/6. 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 9/36:50 pm
SEA
- BIO
1 stop19h 35m
United Airlines
Deal found 5/6![United Airlines logo]()
$440
Find flight deals from Seattle to Bilbao
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Bilbao (BIO). 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 May 11, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $711 (Gotogate) |
One-way from | $340 (Gotogate) |
Popular in | July |
Cheapest in | January |
Average price | $1,024 |
Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated May 11, 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
Cheapest round-trip
Quickest round-trip
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Sun 10/11
2:10 pm-1:20 pm
1 stop14h 10m
Bilbao
Wed 10/14
6:50 am-12:20 pm
1 stop14h 30m
$741
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Mon 9/28
2:10 pm-10:25 pm
1 stop23h 15m
Bilbao
Sat 10/17
6:50 am-9:52 am
2 stops36h 02m
$791
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Tue 9/1
2:06 pm-11:15 pm
2 stops24h 09m
Bilbao
Tue 9/8
6:45 am-11:50 pm
2 stops26h 05m
$811
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Wed 9/2
2:10 pm-10:25 pm
1 stop23h 15m
Bilbao
Mon 9/21
6:40 pm-4:59 pm
1 stop31h 19m
$833
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Mon 8/31
11:04 pm-5:55 pm
2 stops33h 51m
Bilbao
Sun 9/13
6:50 am-10:42 pm
2 stops24h 52m
$855
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Sun 8/30
6:50 pm-11:25 pm
1 stop19h 35m
Bilbao
Sat 9/12
6:50 am-11:55 am
1 stop14h 05m
$896
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Fri 9/4
6:50 pm-11:25 pm
1 stop19h 35m
Bilbao
Sun 9/20
7:40 am-4:59 pm
1 stop18h 19m
$901
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Mon 8/31
6:40 pm-10:00 pm
1 stop18h 20m
Bilbao
Sun 9/13
7:10 am-11:15 am
1 stop13h 05m
$902
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Mon 8/31
7:20 am-11:15 am
2 stops18h 55m
Bilbao
Sun 9/13
7:10 am-11:15 am
1 stop13h 05m
$911
Cheapest one-way
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Sun 9/27
6:50 pm-11:25 pm
1 stop19h 35m
$340
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Seattle to Bilbao
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 Seattle to Bilbao in May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Bilbao flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Seattle-Bilbao flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Seattle-Bilbao flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Bilbao flights, Cheapflights users trust Ovago the most. Ovago 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 Seattle-Bilbao 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 Seattle to Bilbao
Have a flexible travel schedule? Discover the best time to fly to Bilbao from Seattle with our price prediction graph.
SEA-BIO
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.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Bilbao
Reviews of airlines servicing Bilbao
Get insights into the airlines that provide service to Bilbao. 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 Bilbao. Reviews last updated May 11, 2026.
Peruse reviews from past customers who have flown with Delta,KLM, andUnited Airlines from Seattle to Bilbao to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.2
Crew
8.5
Boarding
8.1
Comfort
7.9
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Crew
8.5
Boarding
8.1
Comfort
7.9
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Crew
8.5
Boarding
8.1
Comfort
7.9
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Crew
8.5
Boarding
8.1
Comfort
7.9
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Crew
8.5
Boarding
8.1
Comfort
7.9
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
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Seattle and Bilbao flights
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Top 4 airlines flying from Seattle to Bilbao
Discover the top 4 airlines that operate flights from Seattle to Bilbao. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$484 | Average$940 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$514 | Average$898 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$586 | Average$1,220 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$731 | Average$1,051 | FlexibilityNo cancel fee | On-timeN/A |