$321+ 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 8/28. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BIO
Aug 4 — Aug 111
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Bilbao 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 Seattle to Bilbao
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Best
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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 July 5, 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 July 5, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 7/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1210:30 am
SEA
- BIO
2 stops27h 55m
Lufthansa
Thu 10/226:50 am
BIO
- SEA
2 stops20h 42m
Lufthansa
Deal found 7/2![Lufthansa logo]()
$715
This Air France deal was found by Cheapflights users on 7/1. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/126:45 pm
SEA
- BIO
1 stop18h 15m
Multiple Airlines
Thu 10/226:45 am
BIO
- SEA
1 stop14h 07m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$725
This Air Canada deal was found by Cheapflights users on 7/1. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/123:00 pm
SEA
- BIO
2 stops17h 55m
Air Canada
Thu 10/226:50 am
BIO
- SEA
2 stops20h 42m
Air Canada
Deal found 7/1![Air Canada logo]()
$727
This Mytrip deal was found by Cheapflights users on 7/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/317:00 pm
SEA
- BIO
2 stops18h 40m
Multiple Airlines
Mon 9/76:50 pm
BIO
- SEA
3 stops47h 50m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$757
This oojo deal was found by Cheapflights users on 7/1. 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
Thu 10/86:50 am
BIO
- SEA
1 stop14h 30m
Lufthansa
Deal found 7/1![Lufthansa logo]()
$772
This United Airlines deal was found by Cheapflights users on 6/30. 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.
Thu 10/16:50 pm
SEA
- BIO
1 stop19h 35m
United Airlines
Mon 10/122:10 pm
BIO
- SEA
1 stop31h 10m
United Airlines
Deal found 6/30![United Airlines logo]()
$797
This Delta deal was found by Cheapflights users on 7/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/272:30 pm
SEA
- BIO
2 stops18h 00m
Delta
Thu 10/86:45 am
BIO
- SEA
2 stops19h 03m
Delta
Deal found 7/4![Delta logo]()
$800
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 July 5, 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 July 5, 2026.
This oojo deal was found by Cheapflights users on 7/4. 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.
Sun 9/276:50 pm
SEA
- BIO
1 stop14h 05m
Lufthansa
Thu 10/86:50 am
BIO
- SEA
1 stop14h 30m
Lufthansa
Deal found 7/4![Lufthansa logo]()
$772
This Delta deal was found by Cheapflights users on 7/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/272:30 pm
SEA
- BIO
2 stops18h 00m
Delta
Thu 10/86:45 am
BIO
- SEA
2 stops19h 03m
Delta
Deal found 7/4![Delta logo]()
$800
This United Airlines deal was found by Cheapflights users on 6/30. 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.
Thu 10/11:56 pm
SEA
- BIO
2 stops24h 29m
United Airlines
Mon 10/1211:10 am
BIO
- SEA
1 stop34h 10m
United Airlines
Deal found 6/30![United Airlines logo]()
$801
This Finnair deal was found by Cheapflights users on 6/30. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/12:07 pm
SEA
- BIO
2 stops24h 08m
Multiple Airlines
Tue 9/86:45 am
BIO
- SEA
2 stops26h 14m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$840
This British Airways deal was found by Cheapflights users on 7/3. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/171:30 pm
SEA
- BIO
1 stop20h 05m
British Airways
Wed 9/91:50 pm
BIO
- SEA
1 stop30h 45m
British Airways
Deal found 7/3![British Airways logo]()
$1,616
This Delta deal was found by Cheapflights users on 7/2. 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 9/15:30 am
SEA
- BIO
2 stops19h 20m
Delta
Tue 9/812:00 pm
BIO
- SEA
1 stop13h 35m
Delta
Deal found 7/2![Delta logo]()
$820
This TAP AIR PORTUGAL deal was found by Cheapflights users on 7/1. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3111:40 am
SEA
- BIO
3 stops21h 20m
TAP AIR PORTUGAL
Sun 9/137:45 pm
BIO
- SEA
2 stops35h 53m
TAP AIR PORTUGAL
Deal found 7/1![TAP AIR PORTUGAL logo]()
$1,753
This United Airlines deal was found by Cheapflights users on 7/1. 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 8/308:10 am
SEA
- BIO
2 stops30h 15m
United Airlines
Sat 9/126:50 am
BIO
- SEA
1 stop14h 05m
United Airlines
Deal found 7/1![United Airlines logo]()
$929
This British Airways deal was found by Cheapflights users on 7/3. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/191:36 pm
SEA
- BIO
2 stops19h 59m
British Airways
Sun 9/61:45 pm
BIO
- SEA
1 stop30h 50m
British Airways
Deal found 7/3![British Airways logo]()
$1,721
This TAP AIR PORTUGAL deal was found by Cheapflights users on 7/4. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2711:45 pm
SEA
- BIO
2 stops32h 50m
TAP AIR PORTUGAL
Mon 8/3112:25 pm
BIO
- SEA
3 stops31h 05m
TAP AIR PORTUGAL
Deal found 7/4![TAP AIR PORTUGAL logo]()
$2,047
Last-minute flights from Seattle to BilbaoDiscover last-minute flight deals from Seattle to Bilbao. Data last updated July 5, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Bilbao. Data last updated July 5, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 7/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:50 pm
SEA
- BIO
1 stop14h 05m
Lufthansa
Sun 8/306:50 am
BIO
- SEA
1 stop14h 05m
Lufthansa
Deal found 7/2![Lufthansa logo]()
$863
This United Airlines deal was found by Cheapflights users on 7/3. 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 8/177:11 am
SEA
- BIO
2 stops25h 44m
United Airlines
Mon 8/242:10 pm
BIO
- SEA
2 stops41h 32m
United Airlines
Deal found 7/3![United Airlines logo]()
$842
This oojo deal was found by Cheapflights users on 7/1. 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 8/196:50 pm
SEA
- BIO
1 stop14h 05m
Lufthansa
Sat 9/511:55 am
BIO
- SEA
1 stop14h 04m
Lufthansa
Deal found 7/1![Lufthansa logo]()
$821
This Mytrip deal was found by Cheapflights users on 7/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/317:00 pm
SEA
- BIO
2 stops18h 40m
Multiple Airlines
Mon 9/76:50 pm
BIO
- SEA
3 stops47h 50m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$757
This Cheapflightsfares deal was found by Cheapflights users on 7/4. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/317:00 am
SEA
- BIO
2 stops18h 50m
SWISS
Mon 9/79:10 pm
BIO
- SEA
2 stops34h 35m
SWISS
Deal found 7/4![SWISS logo]()
$845
This United Airlines deal was found by Cheapflights users on 7/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/315:13 pm
SEA
- BIO
2 stops37h 47m
United Airlines
Mon 9/72:10 pm
BIO
- SEA
1 stop30h 45m
United Airlines
Deal found 7/4![United Airlines logo]()
$854
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 July 5, 2026.
Search for one-way flight options from Seattle to Bilbao. Find affordable one-way fares based on user searches. Data last updated July 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2811:25 pm
SEA
- BIO
3 stops38h 15m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$321
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1111:25 pm
SEA
- BIO
3 stops26h 05m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2611:25 pm
SEA
- BIO
2 stops54h 45m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$354
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/57:00 pm
SEA
- BIO
3 stops41h 00m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$361
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/107:00 am
SEA
- BIO
3 stops40h 15m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$364
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/611:25 pm
SEA
- BIO
3 stops38h 15m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$366
This Kiwi.com deal was found by Cheapflights users on 7/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:00 pm
SEA
- BIO
2 stops38h 35m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$367
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/77:00 am
SEA
- BIO
3 stops40h 30m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$380
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 July 5, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $629 (Scandinavian Airlines) |
One-way from | $321 (Kiwi.com) |
Popular in | July |
Cheapest in | January |
Average price | $1,207 |
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 July 5, 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 9/27
6:50 pm-5:55 pm
1 stop14h 05m
Bilbao
Thu 10/8
6:50 am-12:20 pm
1 stop14h 30m
$772
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Sun 9/27
2:30 pm-5:30 pm
2 stops18h 00m
Bilbao
Thu 10/8
6:45 am-4:48 pm
2 stops19h 03m
$800
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Thu 10/1
1:56 pm-11:25 pm
2 stops24h 29m
Bilbao
Mon 10/12
11:10 am-12:20 pm
1 stop34h 10m
$801
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Tue 9/1
5:30 am-9:50 am
2 stops19h 20m
Bilbao
Tue 9/8
12:00 pm-4:35 pm
1 stop13h 35m
$820
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Tue 9/1
2:07 pm-11:15 pm
2 stops24h 08m
Bilbao
Tue 9/8
6:45 am-11:59 pm
2 stops26h 14m
$840
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Sun 8/30
8:10 am-11:25 pm
2 stops30h 15m
Bilbao
Sat 9/12
6:50 am-11:55 am
1 stop14h 05m
$929
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Mon 8/17
1:30 pm-6:35 pm
1 stop20h 05m
Bilbao
Wed 9/9
1:50 pm-11:35 am
1 stop30h 45m
$1,616
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Wed 8/19
1:36 pm-6:35 pm
2 stops19h 59m
Bilbao
Sun 9/6
1:45 pm-11:35 am
1 stop30h 50m
$1,721
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Mon 8/31
11:40 am-6:00 pm
3 stops21h 20m
Bilbao
Sun 9/13
7:45 pm-10:38 pm
2 stops35h 53m
$1,753
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Thu 8/27
11:45 pm-5:35 pm
2 stops32h 50m
Bilbao
Mon 8/31
12:25 pm-10:30 am
3 stops31h 05m
$2,047
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 July.
| 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
How far ahead should I book a flight from Seattle to Bilbao?
The best time to book flights from Seattle to Bilbao is 70 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
How much does it cost to fly round-trip 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 July 5, 2026.
Peruse reviews from past customers who have flown with KLM,Delta, 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.
Overall
7.8
Boarding
7.8
Comfort
7.7
Crew
8.4
Entertainment
7.2
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Overall
7.8
Boarding
7.8
Comfort
7.7
Crew
8.4
Entertainment
7.2
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Overall
7.8
Boarding
7.8
Comfort
7.7
Crew
8.4
Entertainment
7.2
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Overall
7.8
Boarding
7.8
Comfort
7.7
Crew
8.4
Entertainment
7.2
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Overall
7.8
Boarding
7.8
Comfort
7.7
Crew
8.4
Entertainment
7.2
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
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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Explore flights to Bilbao departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 5, 2026.
Complete your trip
Complete your trip to Bilbao by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from Seattle to Bilbao, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Bilbao flights
Browse other Seattle and Bilbao flight options. Last updated on July 5, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on July 5, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 July 5, 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$1,064 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$731 | Average$1,040 | FlexibilityNo cancel fee | On-timeN/A |