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

Search hundreds of travel sites at once for deals on flights to Bilbao

Sat 12/9
Sat 12/16
Any month
Compare vs. KAYAK |

Good to Know

Average Price:
$1315
(avg. price over the last 2 weeks)
Good Deal:
$989
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 $988 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 42% 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 15h 45m, 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 Multiple Airlines ($702), Multiple Airlines ($732) and British Airways ($764).
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
$702
only
$702
Destination
Bilbao
$702
only
$702
Sat, Feb 10
SEA
BIO
15h 45m
Sun, Feb 18
BIO
SEA
20h 23m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Fri, Mar 2
SEA
BIO
24h 10m
Tue, Apr 10
BIO
SEA
26h 25m
Trip: 39 days
Overall 0.0 Poor
Based on 0 reviews
Fri, Jan 19
SEA
BIO
19h 15m
Sun, Jan 21
BIO
SEA
20h 23m
Trip: 3 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 13871 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
PRG
LHR
Mediocre 2.0

Entertainment options were good.

Lost my bag. No idea where it was for 48 hours. Staff was ok. Ran out of meal options, took 4 asks to get a glass of wine and by the time I got it, I was done eating.

BLQ
LHR
Good 6.3

I had to pay for my standard seat selection, even within the 24 hour period. They wouldn't serve me tap water, I had to pay for a bottle. The boarding process was abyssmal. Not a great trip.

PVG
LHR
Good 7.3

Flight was smooth and on time. Good flying the 777. Lots of open seats in a not so full flight. The food was good for economy class and the flight attendants very attentive and looking for ways to serve.

The arm rests of the seating would not fold all the way up to allow me to spread to the 2 empty seats next to me. I laid across all 3 seats and tried to sleep, however had the armrest jammed into my back and legs. Also, it took too long for the cabin crew to get the passengers convinced to close the window shades, so the cabin was brightly lit for the entire flight.

SAN
LHR
Excellent 10.0

Vegetarian food options! Crew, especially Kiaren, was lovely- polite and attentive, and it was a very bumpy flight, so they had to work harder than usual.

LHR
DUB
Excellent 10.0

A bit late getting started but very nice after that.

Must you charge for tea?

Wed, Apr 4
SEA
BIO
24h 05m
Thu, May 3
BIO
SEA
26h 25m
Trip: 30 days
Overall 0.0 Poor
Based on 0 reviews
Fri, Dec 15
SEA
BIO
47h 30m
Fri, Dec 22
BIO
SEA
25h 13m
$1918
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an and someone from our team will get back to you promptly.

^
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.