Cheap Flights from Seattle / Tacoma International to Bilbao

Compare Seattle / Tacoma International to Bilbao flight deals

Find the cheapest month or even day of the year to fly to Bilbao

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Flight deals from Seattle / Tacoma International to Bilbao

Looking for a cheap last-minute deal or the best return flight from Seattle / Tacoma International to Bilbao? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Seattle / Tacoma International to Bilbao

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle / Tacoma International to Bilbao flights are currently cheapest in April.

Seattle / Tacoma International to Bilbao: Alternative routes

Compare routes from Seattle / Tacoma International to Bilbao below. You may find an airport to fly into that's cheaper, faster, or easier than Bilbao.

Seattle to Bilbao: Flight information

The things to know before you go.
Cheapest flight found$792
Cheapest month to flyApril

Finding cheap flights from Seattle / Tacoma International to Bilbao: Frequently asked questions

The best price we found for a return flight from Seattle / Tacoma International to Bilbao is $792. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Seattle / Tacoma International to Bilbao. But we found flights with one or more stops from $792.
As of January 2026, there are no flights flying from Seattle / Tacoma International to Bilbao.
The cheapest month to fly from Seattle / Tacoma International to Bilbao is usually April.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Seattle / Tacoma International Airport to Bilbao Airport on Tuesday, 14 April 2026.
No airlines currently offer direct flights between Seattle / Tacoma International Airport and Bilbao Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Bilbao but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Bilbao is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Delta offers the cheapest flight tickets to Bilbao.

Flying from Seattle-Tacoma International Airport (SEA) to Bilbao Airport (BIO): what you need to know

  • Bilbao is eight hours ahead of Seattle and follows the UTC+1 timezone.

  • Leave plenty of time to make your SEA to BIO flight. A good rule of thumb is to arrive at least two hours before international departures and an hour ahead for domestic flights.

  • Be prepared for bigger queues during popular months such as July. Arriving up to four hours ahead of international flights and two hours for a domestic departure will give you ample time for security and boarding.

  • If you want to break up your flight, simply deselect 'Direct flights only' when searching for your ticket from Seattle-Tacoma International Airport to Bilbao Airport. These are the top stopovers between SEA and BIO:

    • Amsterdam Airport Schiphol

    • Charles de Gaulle Airport

    • Frankfurt Airport

How to find the cheapest flights from Seattle-Tacoma International Airport (SEA) to Bilbao Airport (BIO)

  • Right now, $414 is the lowest price we've seen for a one-way Seattle-Tacoma International Airport to Bilbao Airport flight. The best price for a return ticket is $792. Remember that fares could change due to availability when booking.

  • To score cheap tickets from SEA to BIO, book ahead. Airlines usually offer lower prices when flights are first released.

  • The 'Whole month' search tool shows you the cheapest flights from Seattle-Tacoma International Airport to Bilbao Airport across the entire month. It's a good way to snap up a bargain if your dates are flexible.

  • You won't have to check every day to find out if fares have dropped when you create a Price Alert. We'll let you know as soon as there's a better deal on cheap flights from SEA to BIO.

  • Choose your preferred arrival and departure times, airlines and number of stops with the filters. Or sort your results by 'Cheapest' to see the best deals on flights from Seattle-Tacoma International Airport to Bilbao Airport.

Handy information about Seattle-Tacoma International Airport (SEA)

  • Seattle-Tacoma International Airport gets high marks for on-time performance. 81.27% of flights that depart SEA arrive at their destination without delay.

  • Seattle-Tacoma International Airport is about 23 kilometres from central Seattle. If you're driving, ride-sharing or catching a cab from the centre, it'll take 20 minutes or so to arrive, depending on the traffic.

  • Expect a journey time of about 55 minutes when using public transport.

  • Need a convenient hotel close to SEA? If you're boarding an early flight from Seattle-Tacoma International Airport to Bilbao Airport, these accommodation options will put you moments from your departure gate:

Arriving at Bilbao Airport (BIO)

  • If you're arriving on a late Seattle-Tacoma International Airport to Bilbao Airport flight, nothing beats the convenience of being near the terminal. Grab your luggage from the carousel and then be showered and snoozing shortly after at one of these hotels near BIO:

  • Pick up a Bilbao Airport rental car and explore Bilbao and beyond with your own wheels. Record Go, Click and Rent and Goldcar are top outlets you can book with here.

  • Lock in the best rate by reserving your vehicle from Bilbao Airport around four weeks ahead of your trip.

Getting from Bilbao Airport (BIO) to central Bilbao

  • From Bilbao Airport, Bilbao is approximately 6 kilometres away. It takes around 10 minutes to reach the centre by car.

  • Getting there on public transport takes around 30 minutes.

When to fly to Bilbao Airport (BIO)

  • The quietest month for a flight from Seattle-Tacoma International Airport to Bilbao Airport is January, while July is the busiest. Pick the ideal time to visit Bilbao based on whether you prefer a bustling atmosphere or a more laid-back vibe.

  • Lock in your flight from Seattle-Tacoma International Airport to Bilbao Airport for August if you'd like to visit Bilbao during its warmest month. Expect temperatures of between 16ºC and 25ºC.

  • Look for cheap tickets from SEA to BIO in January if you want to travel in cooler conditions. Temperatures are at their lowest around then, ranging between 5ºC and 13ºC on average.

Explore more of Spain

  • Zaragoza is just one of the many places in Spain waiting to be discovered once you've seen the sights of Bilbao. Around 241 kilometres away to the south-east, its best attractions include Puente de Piedra, Museo Pablo Gargallo and El Tubo.

  • If you're eager to discover another corner of Spain, consider Salamanca, roughly 338 kilometres south-west of Bilbao. Plaza Mayor, S.O.U. Servicio de Orientación al Universitario. Universidad de Salamanca and Pontifical University of Salamanca are key highlights.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.