
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 November 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $719 (Air Canada) |
One-way from | $495 (Cheapflightsfares) |
Popular in | November |
Cheapest in | January |
Average price | $1,485 |
Fly from
Fly to
Route
Depart
Return
SeattleBilbao
SEA Seattle/Tacoma Intl - BIO Bilbao
SEABIO
Seattle/Tacoma Intl
Fri 12/11
11:39 pm-3:15 pm
2 stops30h 36m
Bilbao
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
SeattleBilbao
SEA Seattle/Tacoma Intl - BIO Bilbao
SEABIO
Seattle/Tacoma Intl
Fri 12/11
10:22 am-1:55 pm
3 stops42h 33m
Bilbao
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
SeattleBilbao
SEA Seattle/Tacoma Intl - BIO Bilbao
SEABIO
Seattle/Tacoma Intl
Sun 4/25
2:10 pm-11:00 pm
1 stop23h 50m
Bilbao
Thu 4/29
6:50 am-12:20 pm
1 stop14h 30m
SeattleBilbao
SEA Seattle/Tacoma Intl - BIO Bilbao
SEABIO
Seattle/Tacoma Intl
Sun 2/7
2:50 pm-5:00 pm
2 stops17h 10m
Bilbao
Thu 2/11
6:45 am-12:00 pm
1 stop14h 15m
SeattleBilbao
SEA Seattle/Tacoma Intl - BIO Bilbao
SEABIO
Seattle/Tacoma Intl
Fri 12/11
2:50 pm-5:45 pm
1 stop17h 55m
Bilbao
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
SeattleBilbao
SEA Seattle/Tacoma Intl - BIO Bilbao
SEABIO
Seattle/Tacoma Intl
Sun 12/6
2:50 pm-5:45 pm
1 stop17h 55m
Bilbao
Tue 12/22
11:45 am-1:00 pm
1 stop34h 15m
SeattleBilbao
SEA Seattle/Tacoma Intl - BIO Bilbao
SEABIO
Seattle/Tacoma Intl
Sun 12/6
2:50 pm-5:45 pm
1 stop17h 55m
Bilbao
Tue 12/22
11:45 am-1:00 pm
1 stop34h 15m
SeattleBilbao
SEA Seattle/Tacoma Intl - BIO Bilbao
SEABIO
Seattle/Tacoma Intl
Wed 12/16
7:00 am-10:50 pm
2 stops30h 50m
Bilbao
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
SeattleBilbao
SEA Seattle/Tacoma Intl - BIO Bilbao
SEABIO
Seattle/Tacoma Intl
Sun 12/6
2:50 pm-5:45 pm
1 stop17h 55m
Bilbao
Mon 12/21
6:45 am-12:00 pm
1 stop14h 15m
SeattleBilbao
SEA Seattle/Tacoma Intl - BIO Bilbao
SEABIO
Seattle/Tacoma Intl
Sun 12/6
6:00 am-11:30 am
2 stops20h 30m
Bilbao
Mon 12/21
11:55 am-11:50 am
1 stop32h 55m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
Food
Boarding
Entertainment
Overall
Crew
Comfort
Reviews
Kushal,Sep 2026
QRO - ATL
Food
Boarding
Entertainment
Overall
Crew
Comfort
Reviews
Kushal,Sep 2026
QRO - ATL
Food
Boarding
Entertainment
Overall
Crew
Comfort
Reviews
Kushal,Sep 2026
QRO - ATL
Food
Boarding
Entertainment
Overall
Crew
Comfort
Reviews
Kushal,Sep 2026
QRO - ATL
Food
Boarding
Entertainment
Overall
Crew
Comfort
Reviews
Kushal,Sep 2026
QRO - ATL
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.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$484 | Average$939 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$581 | Average$963 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$654 | Average$963 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$683 | Average$897 | FlexibilityNo cancel fee | On-time76% |