$361+ 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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BIO
Aug 16 — Aug 231
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 17, 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 17, 2026.
This oojo deal was found by Cheapflights users on 7/15. 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 7/15![Lufthansa logo]()
$724
This Air France deal was found by Cheapflights users on 7/13. 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 7/13![Multiple Airlines logo]()
$725
This United Airlines deal was found by Cheapflights users on 7/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/186:50 pm
SEA
- BIO
1 stop19h 35m
United Airlines
Wed 10/216:50 am
BIO
- SEA
1 stop14h 30m
United Airlines
Deal found 7/12![United Airlines logo]()
$727
This United Airlines deal was found by Cheapflights users on 7/15. 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 10/1910:42 am
SEA
- BIO
2 stops20h 18m
United Airlines
Thu 10/226:50 am
BIO
- SEA
1 stop14h 30m
United Airlines
Deal found 7/15![United Airlines logo]()
$732
This Cheapflightsfares deal was found by Cheapflights users on 7/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/277:00 am
SEA
- BIO
2 stops17h 25m
SWISS
Thu 10/88:45 pm
BIO
- SEA
2 stops31h 07m
SWISS
Deal found 7/12![SWISS logo]()
$764
This Cheapflightsfares deal was found by Cheapflights users on 7/14. 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 9/276:50 pm
SEA
- BIO
1 stop14h 05m
Lufthansa
Thu 10/86:50 am
BIO
- SEA
2 stops20h 42m
Lufthansa
Deal found 7/14![Lufthansa logo]()
$772
This oojo deal was found by Cheapflights users on 7/13. 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 9/277:00 am
SEA
- BIO
2 stops17h 25m
Multiple Airlines
Thu 10/86:50 am
BIO
- SEA
2 stops16h 32m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$780
This Trip.com deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/317:00 pm
SEA
- BIO
2 stops18h 40m
Multiple Airlines
Wed 9/166:10 pm
BIO
- SEA
2 stops35h 30m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$781
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 17, 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 17, 2026.
This United Airlines deal was found by Cheapflights users on 7/13. 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 10/186:50 pm
SEA
- BIO
1 stop19h 35m
United Airlines
Wed 10/216:50 am
BIO
- SEA
2 stops20h 42m
United Airlines
Deal found 7/13![United Airlines logo]()
$727
This Delta deal was found by Cheapflights users on 7/16. 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 9/276:00 am
SEA
- BIO
2 stops18h 50m
Delta
Thu 10/86:45 am
BIO
- SEA
2 stops18h 52m
Delta
Deal found 7/16![Delta logo]()
$800
This United deal was found by Cheapflights users on 7/16. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/610:58 pm
SEA
- BIO
2 stops39h 27m
Multiple Airlines
Tue 9/226:50 am
BIO
- SEA
2 stops16h 32m
Multiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$826
This Turkish Airlines deal was found by Cheapflights users on 7/13. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:15 pm
SEA
- BIO
1 stop30h 55m
Turkish Airlines
Thu 8/206:20 pm
BIO
- SEA
1 stop32h 00m
Turkish Airlines
Deal found 7/13![Turkish Airlines logo]()
$1,094
This United Airlines deal was found by Cheapflights users on 7/16. 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 10/192:10 pm
SEA
- BIO
1 stop23h 15m
United Airlines
Thu 10/226:50 am
BIO
- SEA
1 stop14h 30m
United Airlines
Deal found 7/16![United Airlines logo]()
$739
This Delta deal was found by Cheapflights users on 7/14. 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 8/307:15 am
SEA
- BIO
2 stops19h 00m
Delta
Sat 9/1210:30 am
BIO
- SEA
2 stops18h 50m
Delta
Deal found 7/14![Delta logo]()
$949
This United Airlines deal was found by Cheapflights users on 7/15. 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 8/2411:59 pm
SEA
- BIO
2 stops25h 46m
United Airlines
Mon 8/3111:55 am
BIO
- SEA
2 stops56h 49m
United Airlines
Deal found 7/15![United Airlines logo]()
$877
This United Airlines deal was found by Cheapflights users on 7/15. 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 8/278:10 am
SEA
- BIO
2 stops24h 45m
United Airlines
Mon 8/312:10 pm
BIO
- SEA
1 stop30h 45m
United Airlines
Deal found 7/15![United Airlines logo]()
$1,000
Last-minute flights from Seattle to BilbaoDiscover last-minute flight deals from Seattle to Bilbao. Data last updated July 17, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Bilbao. Data last updated July 17, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 7/15. 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 8/242:10 pm
SEA
- BIO
1 stop14h 10m
Lufthansa
Mon 8/316:40 pm
BIO
- SEA
1 stop31h 19m
Lufthansa
Deal found 7/15![Lufthansa logo]()
$856
This Gotogate deal was found by Cheapflights users on 7/15. 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 8/248:00 am
SEA
- BIO
2 stops20h 20m
Multiple Airlines
Mon 8/316:40 pm
BIO
- SEA
1 stop31h 19m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$865
This United Airlines deal was found by Cheapflights users on 7/15. 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 8/2411:59 pm
SEA
- BIO
2 stops25h 46m
United Airlines
Mon 8/3111:55 am
BIO
- SEA
2 stops56h 49m
United Airlines
Deal found 7/15![United Airlines logo]()
$877
This Cheapflightsfares deal was found by Cheapflights users on 7/13. 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 8/306:50 pm
SEA
- BIO
1 stop19h 35m
Lufthansa
Sat 9/126:50 am
BIO
- SEA
1 stop14h 05m
Lufthansa
Deal found 7/13![Lufthansa logo]()
$907
This Trip.com deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/317:00 pm
SEA
- BIO
2 stops18h 40m
Multiple Airlines
Wed 9/166:10 pm
BIO
- SEA
2 stops35h 30m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$781
This Gotogate deal was found by Cheapflights users on 7/14. 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 8/317:15 pm
SEA
- BIO
1 stop37h 05m
Turkish Airlines
Wed 9/166:20 pm
BIO
- SEA
1 stop32h 00m
Turkish Airlines
Deal found 7/14![Turkish Airlines logo]()
$795
This United Airlines deal was found by Cheapflights users on 7/17. 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 9/711:10 am
BIO
- SEA
1 stop33h 45m
United Airlines
Deal found 7/17![United Airlines logo]()
$854
This Booking.com deal was found by Cheapflights users on 7/14. 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.
Mon 8/317:00 am
SEA
- BIO
2 stops19h 10m
Lufthansa
Wed 9/166:50 am
BIO
- SEA
1 stop14h 05m
Lufthansa
Deal found 7/14![Lufthansa logo]()
$873
This United Airlines deal was found by Cheapflights users on 7/16. 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 stops32h 32m
United Airlines
Sun 9/136:50 am
BIO
- SEA
2 stops24h 52m
United Airlines
Deal found 7/16![United Airlines logo]()
$875
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 17, 2026.
Search for one-way flight options from Seattle to Bilbao. Find affordable one-way fares based on user searches. Data last updated July 17, 2026.
This Mytrip deal was found by Cheapflights users on 7/13. 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 8/63:40 pm
SEA
- BIO
2 stops20h 20m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$361
This Kiwi.com deal was found by Cheapflights users on 7/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:25 pm
SEA
- BIO
2 stops34h 10m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$380
This Kiwi.com deal was found by Cheapflights users on 7/13. 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 8/111:25 pm
SEA
- BIO
2 stops34h 10m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$399
This Air France deal was found by Cheapflights users on 7/13. 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 9/76:45 pm
SEA
- BIO
1 stop18h 15m
Air France
Deal found 7/13![Air France logo]()
$463
This Delta deal was found by Cheapflights users on 7/14. 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 9/77:15 am
SEA
- BIO
2 stops19h 00m
Delta
Deal found 7/14![Delta logo]()
$472
This Turkish Airlines deal was found by Cheapflights users on 7/13. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:15 pm
SEA
- BIO
1 stop30h 55m
Turkish Airlines
Deal found 7/13![Turkish Airlines logo]()
$621
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 17, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $724 (oojo) |
One-way from | $361 (Mytrip) |
Popular in | July |
Cheapest in | January |
Average price | $1,064 |
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 17, 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
Sun 10/18
6:50 pm-11:25 pm
1 stop19h 35m
Bilbao
Wed 10/21
6:50 am-6:32 pm
2 stops20h 42m
$727
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Mon 10/19
2:10 pm-10:25 pm
1 stop23h 15m
Bilbao
Thu 10/22
6:50 am-12:20 pm
1 stop14h 30m
$739
Quickest round-trip
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Sun 9/27
6:00 am-9:50 am
2 stops18h 50m
Bilbao
Thu 10/8
6:45 am-4:37 pm
2 stops18h 52m
$800
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Sun 9/6
10:58 pm-11:25 pm
2 stops39h 27m
Bilbao
Tue 9/22
6:50 am-2:22 pm
2 stops16h 32m
$826
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Mon 8/24
11:59 pm-10:45 am
2 stops25h 46m
Bilbao
Mon 8/31
11:55 am-11:44 am
2 stops56h 49m
$877
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Sun 8/30
7:15 am-11:15 am
2 stops19h 00m
Bilbao
Sat 9/12
10:30 am-8:20 pm
2 stops18h 50m
$949
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Thu 8/27
8:10 am-5:55 pm
2 stops24h 45m
Bilbao
Mon 8/31
2:10 pm-11:55 am
1 stop30h 45m
$1,000
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Thu 8/6
7:15 pm-11:10 am
1 stop30h 55m
Bilbao
Thu 8/20
6:20 pm-5:20 pm
1 stop32h 00m
$1,094
Cheapest one-way
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Thu 8/6
11:25 pm-9:00 pm
3 stops36h 35m
$369
SeattleBilbao
SEA - BIO
SEABIO
Seattle/Tacoma Intl
Sat 8/1
11:25 pm-6:35 pm
2 stops34h 10m
$399
Showing 1-10 of 17 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 17, 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.
Food
7.3
Crew
8.4
Entertainment
7.2
Boarding
7.8
Overall
7.8
Comfort
7.7
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Food
7.3
Crew
8.4
Entertainment
7.2
Boarding
7.8
Overall
7.8
Comfort
7.7
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Food
7.3
Crew
8.4
Entertainment
7.2
Boarding
7.8
Overall
7.8
Comfort
7.7
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Food
7.3
Crew
8.4
Entertainment
7.2
Boarding
7.8
Overall
7.8
Comfort
7.7
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Food
7.3
Crew
8.4
Entertainment
7.2
Boarding
7.8
Overall
7.8
Comfort
7.7
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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Other flights to Bilbao
Explore flights to Bilbao departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 17, 2026.
Complete your trip
Complete your trip to Bilbao by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Bilbao by cabin class
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 17, 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 17, 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 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$484 | Average$939 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$522 | Average$897 | 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 |