Cheap Flights from Portland (PDX) to Bilbao (BIO)

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      Travelers and cabin class, 1 Adult, Economy

      Compare Portland 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

      Find the cheapest month to fly from Portland to Bilbao

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

      Portland to Bilbao: Alternative routes

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

      Portland to Bilbao: Flight information

      The things to know before you go.
      Cheapest flight found$328
      Cheapest month to flyOctober

      Finding cheap flights from Portland to Bilbao: Frequently asked questions

      The best price we found for a round-trip flight from Portland to Bilbao is $923. 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 Portland to Bilbao. But we found flights with one or more stops from $923.
      There are no flights flying from Portland to Bilbao, as of May 2025.
      The cheapest month to fly from Portland to Bilbao is usually May 2025.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Portland Airport to Bilbao Airport on Tuesday, July 22, 2025.
      No airlines currently offer direct flights between Portland 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, United offers the cheapest flight tickets to Bilbao.

      Traveling from Portland International Airport (PDX) to Bilbao Airport (BIO): what you need to know

      • Bilbao is eight hours ahead of Portland and is in the UTC+1 timezone.

      • Leave enough time to catch your PDX to BIO flight. As a general rule, arrive two hours before international departures and an hour ahead for domestic flights.

      • During popular months such as July, it's a good idea to get to the airport earlier. Plan to arrive two hours before a domestic departure and four hours ahead of an international flight when you fly during peak periods in general.

      • Break up your flight or take a detour to a new city with a stopover. Just deselect 'Direct flights only' to see your options when searching for tickets from Portland International Airport to Bilbao Airport. Many passengers pass through Amsterdam Airport Schiphol on this route.

      How to find the cheapest flights from Portland International Airport (PDX) to Bilbao Airport (BIO)

      • Currently, $328 is the lowest price we've found for a one-way Portland International Airport to Bilbao Airport flight. The best price for a return ticket is $923. Remember that fares may change due to availability when booking.

      • To score cheap tickets from PDX to BIO, book early. Airlines generally offer lower fares when flights are first made available.

      • The 'Whole month' tool shows you the cheapest flights from Portland International Airport to Bilbao Airport throughout the entire month. It's an easy way to find a bargain if your travel plans aren't set in stone.

      • You don't need to check back in every day to find out if fares have gone down when you set up a Price Alert. We'll update you as soon as there's a change in price on cheap flights from PDX to BIO.

      • Find the ideal flight for you by using the filters. To see the 'Cheapest,' 'Fastest' or 'Best' flights from Portland International Airport to Bilbao Airport, use the 'Sort by' function. You can also filter results by airline, arrival and departure times, and number of stops.

      Handy information about Portland International Airport (PDX)

      • PDX's address is 7000 NE Airport Way.

      • Portland International Airport scores top marks for its on-time performance. 83.65% of flights that take off from PDX reach their destination on time.

      • Central Portland to Portland International Airport is approximately 12 miles. Depending on traffic, it'll take you about 20 minutes to get there if you're ride-sharing, catching a cab or driving.

      • You can expect a journey time of roughly 45 minutes when using public transport.

      • Booked an early flight from Portland International Airport to Bilbao Airport? Avoid the stress of rushing to the terminal (and sneak in some extra precious sleep) by picking one of these hotels close to PDX:

      Arriving at Bilbao Airport (BIO)

      • Reserve a hotel near BIO if you're catching a late Portland International Airport to Bilbao Airport flight. Choose one of these accommodation options and skip the long transfer after landing:

      • Travel at your own speed with a Bilbao Airport rental car. Book your wheels from Record Go, Click and Rent or Goldcar and experience more of Bilbao and beyond.

      • Booking your vehicle from Bilbao Airport about four weeks ahead gives you the best shot at securing a great deal.

      Getting from Bilbao Airport (BIO) to central Bilbao

      • Bilbao Airport to central Bilbao has a drive time of about 10 minutes. It's approximately 4 miles away.

      • If you're traveling on public transport, expect a journey time of about 30 minutes.

      When to fly to Bilbao Airport (BIO)

      • The quietest month for a flight from Portland International Airport to Bilbao Airport is January, while July is the busiest. Pick the best time to visit Bilbao based on whether you prefer a more fast-paced or easygoing experience.

      • The warmest month in Bilbao is August, with temperatures ranging between 61ºF and 77ºF. Book your flights from Portland International Airport to Bilbao Airport in this month if this is the type of weather you like.

      • January has average temperatures of between 41ºF and 55ºF. Look for cheap tickets from PDX to BIO around that time if you want to travel when it's cooler.

      Explore more of Spain

      • Zaragoza is just one of the many places in Spain waiting to be discovered once you've seen Bilbao. Around 150 miles away to the south-east, check out popular attractions including Puente de Piedra, Museo Pablo Gargallo and El Tubo.

      • Salamanca is another favorite destination in Spain and is around 210 miles south-west of Bilbao. No trip is complete without dropping by Plaza Mayor, S.O.U. Servicio de Orientación al Universitario. Universidad de Salamanca and Pontifical University of Salamanca.

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