Cheap Flights from Seattle (SEAA) to Bilbao (BIO)

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Compare Seattle to Bilbao flight deals

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

Book the best Bilbao fare with no extra fees

Flight deals from Seattle to Bilbao

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

Find the cheapest month to fly from Seattle to Bilbao

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

Seattle to Bilbao: Alternative routes

Compare routes from Seattle 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$313
Cheapest month to flySeptember

Finding cheap flights from Seattle to Bilbao: Frequently asked questions

The best price we found for a round-trip flight from Seattle to Bilbao is $569. 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 to Bilbao. But we found flights with one stop from $569.
There are no flights flying from Seattle to Bilbao, as of June 2025.
The cheapest month to fly from Seattle to Bilbao is usually June 2025.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Bilbao Airport on Tuesday, September 16, 2025.
No airlines currently offer direct flights between Seattle 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.
The cheapest airline that flies to Bilbao is Air Canada.

Traveling from Seattle to Bilbao Airport (BIO): what you need to know

  • Start your travel planning by considering where you'll board your flight from Seattle to Bilbao Airport (BIO). Seattle-Tacoma International Airport (SEA) and Lake Union Sea Plane Base (LKE) are Seattle's main airports.

  • The timezone in Bilbao is UTC+1, which is 8 hours ahead of Seattle. Bilbao Airport is located in Bilbao.

  • For stress-free travel, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This ensures you have enough time to catch your flight from Seattle to BIO.

  • July is a busy month for traveling. If you're taking off then or around a major holiday like Christmas, get there even earlier. Aim for at least two hours ahead for domestic flights and as much as four hours for international journeys.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Think about adding a stopover to potentially save on your flight from Seattle to BIO. Simply uncheck 'Direct flights only' when browsing departures from Seattle-Tacoma International Airport (SEA). Break up the journey at one of these popular airports:

    • Amsterdam Airport Schiphol Airport (AMS)

    • Charles de Gaulle Airport (CDG)

    • Frankfurt Airport (FRA)

  • The distance from central Seattle to SEA is about 14 miles. Check out travel apps like Google Maps for the quickest way to get there, whether you prefer to drive or use public transport.

  • Catching an early flight from Seattle to Bilbao Airport? Avoid the stress of rushing to the terminal (and catch some extra z's) by choosing one of these hotels near Seattle-Tacoma International Airport:

Lake Union Sea Plane Base (LKE)

  • Make the most of your vacation with a stopover on your flight from Seattle to Bilbao Airport. Visit family or friends or tick a new city off your bucket list. Whatever you'd like to do, here's where you can stop between Lake Union Sea Plane Base and BIO:

    • Charles de Gaulle Airport (CDG)

    • Amsterdam Airport Schiphol Airport (AMS)

    • Franz Josef Strauss Airport (MUC)

  • You can get to LKE from central Seattle in approximately 11 minutes by car, depending on traffic. The ride on public transport takes roughly 23 minutes to cover the 2 miles or so.

  • Kick off your vacation early with an extra night away from home. Before catching your flight from Seattle to BIO, unwind in one of these hotels near Lake Union Sea Plane Base:

About Bilbao Airport (BIO)

Getting from Bilbao Airport (BIO) to central Bilbao

  • Bilbao Airport is approximately 4 miles from the center of Bilbao. With your own car rental or if you're catching a cab, the drive is around 9 minutes.

  • If you're using public transport, expect a journey of about 29 minutes.

How to find the cheapest flights from Seattle to Bilbao Airport (BIO)

  • Pick up a one-way ticket from Seattle to Bilbao Airport from $313 or travel return from just $569. Fares listed are subject to change and may differ when you make your booking.

  • We suggest booking as soon as possible to get cheap tickets from Seattle to BIO. You're more likely to score a great deal and have more options for departure times and travel dates.

  • If you're flexible with your trip dates, use the 'Whole month' tool. It'll show you the lowest price across each month when searching for your ticket from Seattle to Bilbao Airport.

  • Create a Price Alert for cheap tickets from Seattle to BIO. There's no need to check back in every day to see whether fares have dropped. We'll tell you when the price changes.

  • Customize your trip using filters. Adjust the number of stops, duration, and arrival and departure times to find the right flight from Seattle to Bilbao Airport. You can also sort the results to see the 'Cheapest,' 'Best' or 'Fastest' options first.

The best time to fly from Seattle to Bilbao Airport (BIO)

  • February is the quietest time to fly to Bilbao. Alternatively, follow the crowds and take off in July. This is the busiest month for flights from Seattle to Bilbao Airport.

  • Think about the kind of weather that'll suit your plans for Bilbao. August is known as the warmest month. Book your flights from Seattle to BIO during then and you can expect temperatures of between 61ºF and 77ºF.

  • If you like cooler conditions, lock in a cheap flight from Seattle to Bilbao Airport in January when temperatures average between 41ºF and 55ºF.

More about Bilbao

  • Start your Bilbao trip right by choosing the perfect place to stay. After booking your flight from Seattle to Bilbao Airport, explore our selection of hotels including:

  • One of the best ways to get to know Bilbao is to check out its popular attractions. Essential stops include Etxebarria Parkea, Puente de La Salve and Bilbao Fine Arts Museum.

Complete your Bilbao trip with a car rental

  • Once you've booked your hotel and cheap flight from Seattle to Bilbao Airport, next up is choosing one of our car rentals in Bilbao. Explore the offers and instantly compare options on pick-up convenience, price, and more.

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