$338+ 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 9/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BIO
Jul 4 — Jul 111
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 June 4, 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 June 4, 2026.
This Justfly.com deal was found by Cheapflights users on 6/1. 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.
Tue 9/293:55 pm
SEA
- BIO
1 stop17h 50m
Scandinavian Airlines
Fri 10/97:35 pm
BIO
- SEA
1 stop27h 10m
Scandinavian Airlines
Deal found 6/1![Scandinavian Airlines logo]()
$693
This FlightHub deal was found by Cheapflights users on 5/31. 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.
Tue 8/183:55 pm
SEA
- BIO
1 stop17h 50m
Scandinavian Airlines
Fri 9/47:35 pm
BIO
- SEA
1 stop27h 10m
Scandinavian Airlines
Deal found 5/31![Scandinavian Airlines logo]()
$709
This oojo deal was found by Cheapflights users on 6/1. 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 oojo 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
Tue 10/66:50 am
BIO
- SEA
1 stop14h 30m
Lufthansa
Deal found 6/1![Lufthansa logo]()
$713
This Gotogate deal was found by Cheapflights users on 6/1. 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 9/288:00 am
SEA
- BIO
2 stops23h 00m
Multiple Airlines
Fri 10/96:45 am
BIO
- SEA
1 stop14h 35m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$718
This oojo deal was found by Cheapflights users on 6/3. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/153:55 pm
SEA
- BIO
1 stop17h 50m
Scandinavian Airlines
Wed 9/237:35 pm
BIO
- SEA
2 stops36h 35m
Scandinavian Airlines
Deal found 6/3![Scandinavian Airlines logo]()
$719
This Cheapflightsfares deal was found by Cheapflights users on 5/31. 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 9/226:50 pm
SEA
- BIO
1 stop19h 35m
Lufthansa
Tue 10/66:50 am
BIO
- SEA
1 stop14h 30m
Lufthansa
Deal found 5/31![Lufthansa logo]()
$720
This oojo deal was found by Cheapflights users on 6/4. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/122:10 pm
SEA
- BIO
1 stop14h 10m
Lufthansa
Thu 10/226:50 am
BIO
- SEA
1 stop14h 30m
Lufthansa
Deal found 6/4![Lufthansa logo]()
$725
This Delta deal was found by Cheapflights users on 5/31. 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 9/201:30 pm
SEA
- BIO
1 stop19h 00m
Delta
Thu 10/86:45 am
BIO
- SEA
1 stop14h 07m
Delta
Deal found 5/31![Delta logo]()
$726
This oojo deal was found by Cheapflights users on 6/3. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/92:00 pm
SEA
- BIO
1 stop18h 00m
Lufthansa
Wed 11/187:25 am
BIO
- SEA
1 stop14h 35m
Lufthansa
Deal found 6/3![Lufthansa logo]()
$727
This United Airlines deal was found by Cheapflights users on 5/31. 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 9/206:50 pm
SEA
- BIO
1 stop19h 35m
United Airlines
Wed 10/76:50 am
BIO
- SEA
2 stops20h 42m
United Airlines
Deal found 5/31![United Airlines logo]()
$728
This United Airlines deal was found by Cheapflights users on 5/31. 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 9/2111:00 pm
SEA
- BIO
2 stops26h 45m
United Airlines
Tue 10/66:50 am
BIO
- SEA
1 stop14h 30m
United Airlines
Deal found 5/31![United Airlines logo]()
$730
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 June 4, 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 June 4, 2026.
This KLM deal was found by Cheapflights users on 6/1. 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 9/285:45 pm
SEA
- BIO
1 stop32h 30m
KLM
Fri 10/96:45 am
BIO
- SEA
1 stop14h 07m
KLM
Deal found 6/1![KLM logo]()
$731
This United Airlines deal was found by Cheapflights users on 6/2. 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 10/127:00 am
SEA
- BIO
2 stops24h 00m
United Airlines
Tue 10/206:50 am
BIO
- SEA
3 stops24h 06m
United Airlines
Deal found 6/2![United Airlines logo]()
$744
This Delta deal was found by Cheapflights users on 5/30. 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 9/15:10 am
SEA
- BIO
2 stops21h 05m
Delta
Tue 9/86:45 am
BIO
- SEA
2 stops19h 07m
Delta
Deal found 5/30![Delta logo]()
$776
This Lufthansa deal was found by Cheapflights users on 6/3. 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.
Fri 8/143:00 pm
SEA
- BIO
2 stops17h 55m
Lufthansa
Fri 8/216:45 am
BIO
- SEA
1 stop14h 10m
Lufthansa
Deal found 6/3![Lufthansa logo]()
$869
This United Airlines deal was found by Cheapflights users on 6/1. 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 9/285:00 am
SEA
- BIO
2 stops33h 25m
United Airlines
Sat 10/106:50 am
BIO
- SEA
3 stops24h 06m
United Airlines
Deal found 6/1![United Airlines logo]()
$793
This United Airlines deal was found by Cheapflights users on 6/1. 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.
Tue 9/2912:15 pm
SEA
- BIO
2 stops26h 10m
United Airlines
Sat 10/106:50 am
BIO
- SEA
3 stops24h 06m
United Airlines
Deal found 6/1![United Airlines logo]()
$793
This Lufthansa deal was found by Cheapflights users on 6/4. 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.
Fri 8/216:50 pm
SEA
- BIO
1 stop19h 35m
Lufthansa
Sun 9/136:50 am
BIO
- SEA
2 stops16h 32m
Lufthansa
Deal found 6/4![Lufthansa logo]()
$885
This United Airlines deal was found by Cheapflights users on 6/3. 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 9/411:04 pm
SEA
- BIO
2 stops39h 21m
United Airlines
Fri 9/116:45 am
BIO
- SEA
2 stops24h 57m
United Airlines
Deal found 6/3![United Airlines logo]()
$836
This United Airlines deal was found by Cheapflights users on 6/2. 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.
Tue 8/255:00 am
SEA
- BIO
2 stops20h 45m
United Airlines
Wed 9/26:50 am
BIO
- SEA
2 stops23h 17m
United Airlines
Deal found 6/2![United Airlines logo]()
$859
This United Airlines deal was found by Cheapflights users on 5/30. 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.
Tue 9/18:10 am
SEA
- BIO
2 stops29h 55m
United Airlines
Tue 9/86:50 am
BIO
- SEA
3 stops37h 54m
United Airlines
Deal found 5/30![United Airlines logo]()
$879
This United Airlines deal was found by Cheapflights users on 6/1. 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 7/246:50 pm
SEA
- BIO
1 stop14h 05m
United Airlines
Fri 8/217:15 am
BIO
- SEA
1 stop18h 44m
United Airlines
Deal found 6/1![United Airlines logo]()
$910
Last-minute flights from Seattle to BilbaoDiscover last-minute flight deals from Seattle to Bilbao. Data last updated June 4, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Bilbao. Data last updated June 4, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 6/1. 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.
Wed 7/153:40 pm
SEA
- BIO
2 stops22h 00m
Multiple Airlines
Thu 7/231:45 pm
BIO
- SEA
2 stops31h 00m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$852
This United Airlines deal was found by Cheapflights users on 6/1. 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 7/196:50 pm
SEA
- BIO
1 stop14h 05m
United Airlines
Thu 8/206:50 am
BIO
- SEA
2 stops16h 32m
United Airlines
Deal found 6/1![United Airlines logo]()
$849
This United Airlines deal was found by Cheapflights users on 6/1. 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 7/2011:11 pm
SEA
- BIO
2 stops26h 34m
United Airlines
Fri 8/216:45 am
BIO
- SEA
1 stop14h 10m
United Airlines
Deal found 6/1![United Airlines logo]()
$851
This United Airlines deal was found by Cheapflights users on 6/1. 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.
Tue 7/217:30 am
SEA
- BIO
1 stop18h 15m
United Airlines
Thu 8/206:50 am
BIO
- SEA
1 stop14h 05m
United Airlines
Deal found 6/1![United Airlines logo]()
$846
This oojo deal was found by Cheapflights users on 6/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/226:50 pm
SEA
- BIO
1 stop14h 05m
Lufthansa
Thu 8/206:50 am
BIO
- SEA
1 stop14h 05m
Lufthansa
Deal found 6/1![Lufthansa logo]()
$832
This Gotogate deal was found by Cheapflights users on 6/1. 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 7/223:00 pm
SEA
- BIO
2 stops17h 55m
Multiple Airlines
Thu 8/206:50 am
BIO
- SEA
1 stop14h 05m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$836
This FlightHub deal was found by Cheapflights users on 6/1. 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 7/266:50 pm
SEA
- BIO
1 stop14h 05m
Lufthansa
Thu 8/206:50 am
BIO
- SEA
2 stops16h 32m
Lufthansa
Deal found 6/1![Lufthansa logo]()
$843
This Delta deal was found by Cheapflights users on 6/1. 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 7/2610:40 pm
SEA
- BIO
2 stops26h 10m
Delta
Fri 8/216:45 am
BIO
- SEA
1 stop18h 42m
Delta
Deal found 6/1![Delta logo]()
$848
This Delta deal was found by Cheapflights users on 6/1. 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 7/276:35 pm
SEA
- BIO
1 stop30h 15m
Delta
Thu 8/206:45 am
BIO
- SEA
1 stop13h 52m
Delta
Deal found 6/1![Delta logo]()
$818
This United Airlines deal was found by Cheapflights users on 6/1. 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 7/278:45 am
SEA
- BIO
2 stops29h 40m
United Airlines
Wed 8/196:50 am
BIO
- SEA
1 stop14h 05m
United Airlines
Deal found 6/1![United Airlines logo]()
$824
This United Airlines deal was found by Cheapflights users on 6/1. 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 7/275:15 am
SEA
- BIO
2 stops33h 10m
United Airlines
Tue 8/1811:10 am
BIO
- SEA
1 stop33h 45m
United Airlines
Deal found 6/1![United Airlines logo]()
$844
This United Airlines deal was found by Cheapflights users on 6/1. 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.
Tue 7/286:50 pm
SEA
- BIO
1 stop14h 05m
United Airlines
Thu 8/206:50 am
BIO
- SEA
2 stops24h 58m
United Airlines
Deal found 6/1![United Airlines logo]()
$819
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 June 4, 2026.
Search for one-way flight options from Seattle to Bilbao. Find affordable one-way fares based on user searches. Data last updated June 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/30. 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 9/73:40 pm
SEA
- BIO
2 stops21h 20m
Multiple Airlines
Deal found 5/30![Multiple Airlines logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 8/197:00 pm
SEA
- BIO
3 stops28h 55m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$344
This Delta deal was found by Cheapflights users on 6/2. 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 10/61:30 pm
SEA
- BIO
1 stop19h 00m
Delta
Deal found 6/2![Delta logo]()
$346
This American Airlines deal was found by Cheapflights users on 6/3. 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.
Mon 9/281:30 pm
SEA
- BIO
2 stops16h 35m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$347
This United Airlines deal was found by Cheapflights users on 5/31. 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 9/276:50 pm
SEA
- BIO
1 stop19h 35m
United Airlines
Deal found 5/31![United Airlines logo]()
$350
This Delta deal was found by Cheapflights users on 5/31. 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 9/2711:20 am
SEA
- BIO
2 stops21h 10m
Delta
Deal found 5/31![Delta logo]()
$351
This Iberia deal was found by Cheapflights users on 5/31. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/275:30 am
SEA
- BIO
2 stops22h 15m
Iberia
Deal found 5/31![Iberia logo]()
$356
This Booking.com deal was found by Cheapflights users on 5/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/86:50 pm
SEA
- BIO
1 stop14h 05m
Lufthansa
Deal found 5/30![Lufthansa logo]()
$370
This United Airlines deal was found by Cheapflights users on 6/3. 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 9/2812:10 pm
SEA
- BIO
3 stops42h 50m
United Airlines
Deal found 6/3![United Airlines logo]()
$371
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 June 4, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $693 (Justfly.com) |
One-way from | $338 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $1,139 |
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 June 4, 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
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Mon 9/28
5:45 pm-11:15 am
1 stop32h 30m
Bilbao
Fri 10/9
6:45 am-11:52 am
1 stop14h 07m
$731
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Mon 10/12
7:00 am-4:00 pm
2 stops24h 00m
Bilbao
Tue 10/20
6:50 am-9:56 pm
3 stops24h 06m
$744
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Tue 9/1
5:10 am-11:15 am
2 stops21h 05m
Bilbao
Tue 9/8
6:45 am-4:52 pm
2 stops19h 07m
$776
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Mon 9/28
5:00 am-11:25 pm
2 stops33h 25m
Bilbao
Sat 10/10
6:50 am-9:56 pm
3 stops24h 06m
$793
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Tue 9/29
12:15 pm-11:25 pm
2 stops26h 10m
Bilbao
Sat 10/10
6:50 am-9:56 pm
3 stops24h 06m
$793
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Fri 9/4
11:04 pm-11:25 pm
2 stops39h 21m
Bilbao
Fri 9/11
6:45 am-10:42 pm
2 stops24h 57m
$836
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Tue 8/25
5:00 am-10:45 am
2 stops20h 45m
Bilbao
Wed 9/2
6:50 am-9:07 pm
2 stops23h 17m
$859
Quickest round-trip
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Fri 8/14
3:00 pm-5:55 pm
2 stops17h 55m
Bilbao
Fri 8/21
6:45 am-11:55 am
1 stop14h 10m
$869
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Tue 9/1
8:10 am-11:05 pm
2 stops29h 55m
Bilbao
Tue 9/8
6:50 am-11:44 am
3 stops37h 54m
$879
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Fri 8/21
6:50 pm-11:25 pm
1 stop19h 35m
Bilbao
Sun 9/13
6:50 am-2:22 pm
2 stops16h 32m
$885
Showing 1-10 of 19 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 June.
| 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 June 4, 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.
Comfort
7.8
Food
7.2
Overall
7.9
Entertainment
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Food
7.2
Overall
7.9
Entertainment
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Food
7.2
Overall
7.9
Entertainment
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Food
7.2
Overall
7.9
Entertainment
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Food
7.2
Overall
7.9
Entertainment
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Seattle to Bilbao. 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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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 June 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$484 | Average$940 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$514 | Average$901 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$586 | Average$1,138 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$731 | Average$1,069 | FlexibilityNo cancel fee | On-timeN/A |