Find Cheap Flights from Seattle/Tacoma Intl to Bilbao (SEA - BIO)

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Good to Know

Average Price:
$1310
(avg. price over the last 2 weeks)
Good Deal:
$937
or less (round trip)

When to Book Flights from Seattle/Tacoma Intl to Bilbao

Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $937 or less.
The cheapest flight from Seattle/Tacoma Intl to Bilbao was found 79 days before departure, on average.
Book at least 1 week before departure in order to get a below-average price.
Morning departure is around 105% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Seattle/Tacoma Intl to Bilbao Flights

How long does a flight from Seattle/Tacoma Intl to Bilbao take?
An average nonstop flight takes 14h 30m, covering a distance of 5162 miles.
Which airlines provide the cheapest flights from Seattle/Tacoma Intl to Bilbao?
In the past 3 days, the cheapest round-trip tickets were found on British Airways ($640), Multiple Airlines ($742) and Turkish Airlines ($1171).
Do I need a passport to fly between Seattle/Tacoma Intl and Bilbao?
Yes.

Book cheap flights from Seattle/Tacoma Intl to Bilbao (round-trip)

Airports
Origin
Seattle
$640
only
$640
Destination
Bilbao
$640
only
$640
Sat, Apr 14
SEA
BIO
19h 50m
Thu, May 3
BIO
SEA
21h 40m
Trip: 20 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 15361 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
YUL
LHR
Excellent 8.6

On time and staff

Too little space for seating!

MAN
LHR
Excellent 10.0

New plane. Good leg room. Good service overall.

LHR
AMS
Good 6.0

Carrier was small. Crew could have been more helpful and courteous.

BWI
LHR
Good 6.0

Sitting in exist row with leg room

Seats are small, not enough elbow space. Movie selection was bad.

BCN
LHR
Okay 4.6

Arm rest not going up for 11 hour flight not good . Trash not collected

Sat, May 19
SEA
BIO
44h 20m
Mon, May 28
BIO
SEA
38h 24m
Trip: 10 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Jul 25
SEA
BIO
36h 56m
Wed, Aug 15
BIO
SEA
37h 03m
$1171
Trip: 22 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 17979 reviews
Overall
8.0
Boarding
7.9
Comfort
7.8
Crew
8.3
Entertainment
8.1
Food
7.9
IST
ORD
Excellent 10.0

Pilot was operating nicely, temperature was acceptable,

Cabin crews should pay more attention to elder people,

LOS
IST
Excellent 8.6

Excellent food excellent services

Not prompt and boarding wasn’t great ..

IST
KHI
Excellent 9.0

Easy and intime boarding

Need to include sea food in your menu

ORD
IST
Excellent 9.0

Easy check in

Please include sea food in your menu

IST
HBE
Excellent 8.3

The food and the attention from part of the crew were beyond excellent.

The long wait at the gate to board.

Sat, Jul 7
SEA
BIO
14h 45m
Fri, Jul 13
BIO
SEA
14h 05m
$1320
Trip: 7 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 18739 reviews
Overall
8.2
Boarding
8.2
Comfort
7.9
Crew
8.5
Entertainment
7.8
Food
7.7
FRA
SEA
Good 7.6

Flight out was delayed by four and a half hours, missed connection was a pain. Was not aware that Lufthansa changed their policy. To reserve seats you have to pay hundreds of dollars, which was not made clear while booking. Further the quality of their food was significantly degraded.

JFK
MUC
Excellent 8.0

No room for my knees.

TLV
FRA
Good 6.3

Great pilots and crew.

Flight out was delayed by four and a half hours, missed connection was a pain. Was not aware that Lufthansa changed their policy. To reserve seats you have to pay hundreds of dollars, which was not made clear while booking. Further the quality of their food was significantly degraded.

SEA
FRA
Excellent 8.3

Crew is very friendly, seats are extremely comfortable and good room overall, comfortable flight.

Hi, To be honest, it was embarrassing to serve that dish on such a major airline. Chicken with bbq sauce and corn or something like that. Was distasteful I couldn’t take more than 2 small bites.

MUC
BOS
Excellent 9.6

Large screens for movies are excellent. Very easy to use.

Other international carriers have better food, but it wasn't bad. Other carriers have business class cabin designs (Cathay Pacific for instance) which allow the window seat passenger to get out without disturbing the aisle passenger.

Mon, May 21
SEA
BIO
28h 10m
Sun, May 27
BIO
SEA
26h 41m
$1336
Trip: 7 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 3209 reviews
Overall
7.5
Boarding
7.4
Comfort
7.3
Crew
8.0
Entertainment
6.8
Food
7.1
BLQ
LIS
Okay 5.0

It was fine, on time. I didn't have a checked bag or I would have waited in line at check-in for at least 30-45 minutes. Online check-in was relatively easy and digital boarding pass was convenient.

Seats are small, if you need to check a bag it will take forever. The underseat area is much.smaller than other airlines. The flight was very delayed because of some discrepancy regarding the number of passengers. Nothing seemed to be wrong but it took forever!

LIS
SSA
Okay 4.0

The food was not available for the business class passengers and we had to take it from economy.

LIS
MUC
Okay 4.0

Next-day connecting flight after a delayed arrival and involuntary stopover in Porto due to air traffic over LIS. This time around, the flight took off an hour late because of [guess...] air traffic. Well, my dear LIS management, that's how you sink your national carrier.

LIS
MXP
Good 7.3

Clean and simple aircraft. Limited but professional service. Uncomplicated boarding procedures.

Boarding from bus at a main airport in winter. It looks cheap flyght .But we'll organized.

JFK
LIS
Excellent 8.0

service,puntuality,guidance

Mon, Aug 13
SEA
BIO
18h 40m
Wed, Sep 5
BIO
SEA
20h 12m
Trip: 24 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 15361 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
ATL
Good 7.3

The staff were professional. Boarding was orderly. The flight was smooth. The lavatories were clean.

As a tall man, even with an entire row to myself, it was impossible to be comfortable. I had to fold myself like origami to fit. My head and neck was pitched forward, even with the seat back reclined. You got me, next time I’ll spring for business class.

BWI
LHR
Good 6.0

Sitting in exist row with leg room

Seats are small, not enough elbow space. Movie selection was bad.

LHR
BOS
Excellent 10.0

The flight was very pleasant, with great service. The in-flight entertainment selection was good, food was tasty. The day we flew, this flight was maybe half-full in coach, which may not be great for BA, but fantastic for leg room! The attendants were lovely, and I particularly enjoyed the continuous water service through the flight, which kept me nicely hydrated. The ice-cream mid-way through movietime was a welcome treat!

YUL
LHR
Excellent 8.6

On time and staff

Too little space for seating!

LAX
LHR
Excellent 9.0

Punctuality Happy demeanor of cabin crew Meal and Wine Service to standard class passengers Safety Video!! :-)

the actual meal was not very good. I would prefer an option of dried fruit and nuts and a big water

Fri, Aug 10
SEA
BIO
18h 25m
Sun, Sep 2
BIO
SEA
18h 20m
$1370
Trip: 24 days
6.7GoodShow reviews
Overall 6.7 Good
Based on 657 reviews
Boarding
6.9
Comfort
6.4
Crew
7.7
Entertainment
5.8
Food
6.4
FRA
SEA
Okay 4.6

I like the crew and nothing more

The food is very bad Any thing normal cost money Food.tv.drink. It was very cold or too hot that everybody was complaining about

FRA
SEA
Okay 4.6

The flight crew was great, and the aircraft was very nice and clean.

I showed up to the airport 2+ hours early, I tried to check in online, was given a error the said my reservation didn’t exist. When I arrived at the airport I went to the check in counter, when I told them I was checking for a flight to Seattle, i was told that I couldn’t check in because there was a issue with my flight. I was directed to a corner of the terminal. This corner had no chairs or seats for us, we sat there for 2+ hours all the way up to the time our flight was intended to depart. All the while we tried to get information or what was the issue, but we were just stonewalled. Finally past our boarding time were were told the flight was being canceled, and to standby for more information. Another half an hour went by before they told us they were getting us a hotel, and buses to the hotel. So then we waited another 15 minutes or so when they asked us if we had checked in because we needed a ticked to get a room at the hotel. Again we waited in line for 20+ minutes to check in. I had 2 bags to check, one I need at the hotel, the other I did not. They let me check the one bag I could, told me to check the other at the business class check in in the morning to avoid the line, sounds good, or so I thought. So condor gathers us all up, an entire 767 worth of people, and begins hearding us to the buses, they don’t tell us where we’re going, just to follow the one employee, to the 5 or so buses. A large group of us got split off at a set stairs, helping older folks and family with strollers get down the stairs. Now I spent 30 minutes wandering around Frankfurt am main looking for buses. Well they don’t park them out front, they park them out in the middle of nowhere. Finally get to get hotel, it’s a nice hotel. The next morning the lady at the business class desk was extremely rude.

FRA
SEA
Good 6.0

The food and some complimentary beverages were good. The movies minimal and extra cost.

The boarding process was very disorganized, the seats had very little leg room, and the guy behind kept pushing my seat forward with his knees and complaining when I put my seat back.

FRA
CPT
Okay 4.6

Poor legroom, seat did not recline. And why make ne pay 8 euros for movies?

SEA
FRA
Good 7.3

friendly staff, good food and clean cabin.

I’m 5’10 and it was tight on a long flight

Wed, May 16
SEA
BIO
29h 05m
Mon, May 28
BIO
SEA
21h 17m
$1451
Trip: 13 days
7.7GoodShow reviews
Overall 7.7 Good
Based on 2905 reviews
Overall
7.9
Boarding
8.0
Comfort
7.5
Crew
8.3
Entertainment
7.3
Food
7.2
HEL
LHR
Excellent 10.0

I think this airline has an attention to detail and level of service which surpasses most other airlines. Whilst remaining competitive these factors make traveling with Finnair a far more comfortable and attractive proposition for me. In addition, Helsinki airport must be one of the best around.

SVO
HEL
Good 6.5

The flight did eventually take off, unlike a few others leaving around the same time.

We were delayed several hours and were never told why. Mostly there were no Aeroflot staff at the gate to ask. When there was, they said they couldn't help us because our flight was a codeshare with FinnAir. At the last minute they switched gates, sending us all scurrying.

LED
HEL
Excellent 9.2

I liked that there was a smaller airplane on LED - HEL route: it gives more "feeling of flying" than the bigger planes do.

I didn't like the fact that it was not indicated in advance (when the tickets are sold) that LED - HEL route is operated by a different airline, even though that airline is a Finnair's partner. It would have been better to have a complete information up front. But the airplane and crew were excellent.

HEL
JFK
Okay 4.0

Staff wasn’t helpful and gave false information

JFK
HEL
Excellent 8.3

it was just okay. nothing spectacular.

my luggage was misplaced and I didnt have it for 3 days.

Wed, Apr 18
SEA
BIO
24h 05m
Sat, Apr 28
BIO
SEA
26h 25m
Trip: 11 days
Overall 0.0 Poor
Based on 0 reviews
Sun, May 20
SEA
BIO
24h 05m
Thu, May 31
BIO
SEA
26h 25m
Trip: 12 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Aug 9
SEA
BIO
14h 30m
Tue, Sep 4
BIO
SEA
25h 17m
Trip: 27 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 15361 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
BWI
LHR
Good 6.0

Sitting in exist row with leg room

Seats are small, not enough elbow space. Movie selection was bad.

LHR
MAD
Excellent 9.6

Cabin Crew flight data punctuality

That I had to PAY for water to drink that was not tap water No room for my carry-on in overhead bins...took some arranging.

LHR
BOS
Excellent 10.0

The flight was very pleasant, with great service. The in-flight entertainment selection was good, food was tasty. The day we flew, this flight was maybe half-full in coach, which may not be great for BA, but fantastic for leg room! The attendants were lovely, and I particularly enjoyed the continuous water service through the flight, which kept me nicely hydrated. The ice-cream mid-way through movietime was a welcome treat!

LHR
SFO
Excellent 8.3

Flight was delayed by an hour.

LAX
LHR
Excellent 9.0

Punctuality Happy demeanor of cabin crew Meal and Wine Service to standard class passengers Safety Video!! :-)

the actual meal was not very good. I would prefer an option of dried fruit and nuts and a big water

Sun, May 20
SEA
BIO
24h 05m
Tue, May 29
BIO
SEA
26h 25m
Trip: 10 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Mar 4
SEA
BIO
15h 45m
Sat, Mar 10
BIO
SEA
35h 26m
Trip: 7 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 15361 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
YUL
LHR
Excellent 8.6

On time and staff

Too little space for seating!

LHR
ATL
Good 7.3

The staff were professional. Boarding was orderly. The flight was smooth. The lavatories were clean.

As a tall man, even with an entire row to myself, it was impossible to be comfortable. I had to fold myself like origami to fit. My head and neck was pitched forward, even with the seat back reclined. You got me, next time I’ll spring for business class.

LHR
SFO
Excellent 8.3

Flight was delayed by an hour.

MAN
LHR
Excellent 10.0

New plane. Good leg room. Good service overall.

LHR
AMS
Good 6.0

Carrier was small. Crew could have been more helpful and courteous.

Sun, May 20
SEA
BIO
24h 05m
Sat, May 26
BIO
SEA
26h 25m
Trip: 7 days
Overall 0.0 Poor
Based on 0 reviews
Wed, May 16
SEA
BIO
24h 05m
Thu, May 31
BIO
SEA
26h 25m
Trip: 16 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Aug 12
SEA
BIO
39h 45m
Tue, Sep 4
BIO
SEA
42h 03m
$1329
Trip: 24 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 17979 reviews
Overall
8.0
Boarding
7.9
Comfort
7.8
Crew
8.3
Entertainment
8.1
Food
7.9
IST
ORD
Excellent 10.0

Pilot was operating nicely, temperature was acceptable,

Cabin crews should pay more attention to elder people,

ORD
IST
Excellent 9.0

Easy check in

Please include sea food in your menu

LOS
IST
Excellent 8.6

Excellent food excellent services

Not prompt and boarding wasn’t great ..

LGW
IST
Excellent 10.0

I loved the amount of attention and consoling that was given to an ailing elderly woman on my flight to Turkey! On my flight to Ghana the attendants were so gentle and provided a lot of ammenities. Oh and the hotel was an amazing experience and respite especially after the run-around at the airport. Thank you

I did not enjoy the run-around I was given in trying to find the hotel desk. “50 meters then turn left” was the anthem. All someone had to say was go outside the airport and you’ll find the hotel desk! Hehe thank you Turkish Airlines however! Thank you.

IST
SFO
Good 6.6

The entertainment, the food, the free wine.

The small space of the economy seating area. It was very crowded and the staff wasn’t too keen on taking plates from passengers after they’ve eaten so often we were stuck with our trays and couldn’t get up or move. Boarding was a pain from Istanbul. The security check was chaotic and I wish they had a more sanitary way of checking everyone’s bags instead of using the same pair of gloves to search every passenger’s bag and do a body check.

Tue, May 22
SEA
BIO
28h 10m
Sun, May 27
BIO
SEA
24h 39m
$1336
Trip: 6 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 3209 reviews
Overall
7.5
Boarding
7.4
Comfort
7.3
Crew
8.0
Entertainment
6.8
Food
7.1
LIS
SSA
Okay 4.0

The food was not available for the business class passengers and we had to take it from economy.

EWR
LIS
Excellent 8.6

They solved the problem of my sit. But i almost have a hurt attack

When I get to check my tickets they told me that I was in stand by. I have to fight to get my sit.

BCN
LIS
Mediocre 2.0

Nothing

They gave someone else seats I had reserved for 6 months and that I had paid extra for. I will take that up with the company forewidth

LIS
MXP
Good 7.3

Clean and simple aircraft. Limited but professional service. Uncomplicated boarding procedures.

Boarding from bus at a main airport in winter. It looks cheap flyght .But we'll organized.

LIS
MIA
Excellent 8.0

Excellent Service - pleasant flight - comfortable seats

Poor entertainment system

Mon, May 21
SEA
BIO
24h 05m
Thu, May 31
BIO
SEA
26h 25m
Trip: 11 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Mar 24
SEA
BIO
20h 00m
Sat, Apr 7
BIO
SEA
28h 17m
$1069
Trip: 15 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 15361 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
YUL
LHR
Excellent 8.6

On time and staff

Too little space for seating!

LHR
ATL
Good 7.3

The staff were professional. Boarding was orderly. The flight was smooth. The lavatories were clean.

As a tall man, even with an entire row to myself, it was impossible to be comfortable. I had to fold myself like origami to fit. My head and neck was pitched forward, even with the seat back reclined. You got me, next time I’ll spring for business class.

LHR
BOS
Excellent 10.0

The flight was very pleasant, with great service. The in-flight entertainment selection was good, food was tasty. The day we flew, this flight was maybe half-full in coach, which may not be great for BA, but fantastic for leg room! The attendants were lovely, and I particularly enjoyed the continuous water service through the flight, which kept me nicely hydrated. The ice-cream mid-way through movietime was a welcome treat!

LHR
SFO
Excellent 8.3

Flight was delayed by an hour.

LHR
AMS
Good 6.0

Carrier was small. Crew could have been more helpful and courteous.

Mon, May 21
SEA
BIO
29h 05m
Mon, May 28
BIO
SEA
21h 17m
$1451
Trip: 8 days
7.7GoodShow reviews
Overall 7.7 Good
Based on 2905 reviews
Overall
7.9
Boarding
8.0
Comfort
7.5
Crew
8.3
Entertainment
7.3
Food
7.2
HEL
JFK
Okay 4.0

Staff wasn’t helpful and gave false information

WAW
HEL
Excellent 8.6

Nice crew. Basic services. Early arrival.

LED
HEL
Good 6.5

Nice crew that were helpful.

Small plane, cramped seating.

JFK
HEL
Excellent 8.3

it was just okay. nothing spectacular.

my luggage was misplaced and I didnt have it for 3 days.

HEL
NRT
Excellent 9.3

I really enjoyed the whole flight - Finnair is definitely one of the best airlines.

I wish there was a bigger choice of classical music in the entertainment program.

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Seattle/Tacoma Intl to Bilbao Flight Information

Flights Arrive in Bilbao
Flights Depart from Seattle/Tacoma Intl
Flight Price $640
Distance 5162 miles
Airlines British Airways, Turkish Airlines, Lufthansa, TAP AIR PORTUGAL, Condor, Finnair
*
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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.