PDX - BIO

$457 Find Cheap Flights from Portland to Bilbao

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Bilbao departing on 6/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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KAYAK searches hundreds of travel sites at once for deals on flights to Bilbao

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Bilbao, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Bilbao, as well as popular online travel agencies
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Cheap Flights from Portland to Bilbao

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Bilbao that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Portland to Bilbao

KAYAK's recommended round-trip deals from the most popular airlines that fly from Portland to Bilbao.
Discover the best prices for you by selecting your travel dates on KAYAK.
Iberia Logo
2:16 pm - 6:50 pmPDX-BIO
19h 34m2 stops
Iberia Logo
1:30 pm - 8:55 pmBIO-PDX
40h 25m2 stops
$569Iberia
Find Deal
Tue, Sep 30 - Tue, Oct 14
Delta Logo
11:20 am - 4:40 pmPDX-BIO
20h 20m2 stops
Delta Logo
7:10 am - 4:26 pmBIO-PDX
18h 16m2 stops
$628Delta
Find Deal
Sun, Sep 28 - Sun, Oct 5
Delta Logo
6:15 am - 10:25 amPDX-BIO
19h 10m2 stops
Delta Logo
6:50 am - 11:00 amBIO-PDX
13h 10m1 stop
$652Delta
Find Deal
Sun, Sep 28 - Sun, Oct 5
 Logo
10:51 am - 4:05 pmPDX-BIO
44h 14m3 stops
 Logo
6:45 am - 2:46 pmBIO-PDX
41h 01m2 stops
Tue, Sep 30 - Tue, Oct 14
KLM Logo
12:55 pm - 4:30 pmPDX-BIO
18h 35m1 stop
KLM Logo
6:50 am - 11:00 amBIO-PDX
13h 10m1 stop
$693KLM
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Sun, Sep 28 - Sun, Oct 5
KLM Logo
1:25 pm - 4:30 pmPDX-BIO
18h 05m2 stops
KLM Logo
5:15 pm - 11:20 amBIO-PDX
27h 05m1 stop
$836KLM
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Tue, Sep 30 - Tue, Oct 14
United Airlines Logo
11:59 pm - 2:45 pmPDX-BIO
29h 46m2 stops
United Airlines Logo
6:45 am - 8:41 pmBIO-PDX
22h 56m2 stops
$1,047United Airlines
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Fri, Aug 29 - Sun, Sep 28
Lufthansa Logo
8:30 am - 11:25 pmPDX-BIO
29h 55m2 stops
Lufthansa Logo
6:45 am - 12:44 amBIO-PDX
26h 59m2 stops
$1,057Lufthansa
Find Deal
Fri, Aug 29 - Sun, Sep 28
United Airlines Logo
7:04 am - 6:25 pmPDX-BIO
26h 21m3 stops
United Airlines Logo
6:45 am - 8:41 pmBIO-PDX
22h 56m2 stops
$1,201United Airlines
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Fri, Aug 29 - Sun, Sep 28
 Logo
3:25 pm - 11:25 pmPDX-BIO
23h 00m2 stops
 Logo
6:45 am - 6:34 pmBIO-PDX
20h 49m3 stops
$1,256
Find Deal
Sat, May 24 - Wed, Jun 18
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KAYAK's insights & trends for Portland to Bilbao flights

Get data-powered insights and trends into flights from Portland to Bilbao to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Portland to Bilbao?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Portland to Bilbao were found on Iberia ($569) and Delta ($628).

Good to know

Low seasonNovember
High seasonAugust
Cheapest flight$457
Best time to beat the crowds with an average 39% drop in price.
Most popular time to fly with an average 16% increase in price.
Flight from Portland to Bilbao

When to book flights from Portland to Bilbao

Are your dates flexible? Find out the best times to travel from Portland to Bilbao based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Portland to Bilbao

  • What is the cheapest flight from Portland to Bilbao?

    In the last 3 days, the lowest price for a flight from Portland to Bilbao was $457 for a one-way ticket and $569 for a round-trip.

  • Do I need a passport to fly between Portland and Bilbao?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Portland and on arrival in Bilbao.

  • Which aircraft models fly most regularly from Portland to Bilbao?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Portland to Bilbao?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Portland and Bilbao, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Portland to Bilbao, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from Portland to Bilbao are Delta and KLM. With an average price for the route of $1,099 and an overall rating of 8.0, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $1,165 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Portland to Bilbao?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to Bilbao.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Bilbao?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bilbao from Portland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Bilbao?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Bilbao with an airline and back to Portland with another airline. Booking your flights between Portland and BIO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Bilbao?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Bilbao from Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top airlines flying from Portland to Bilbao

 
See real verified KAYAK customer reviews for airlines flying from Portland to Bilbao. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Portland to Bilbao? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 7934 reviews
7.3Food
8.2Boarding
8.5Crew
7.9Entertainment
7.9Comfort
Airline reviews

Our bag was lost so that made unnecessary chaos On our trip

6.0 GoodBarbara, Apr 2025JFK - FCO
Read more Delta reviews

Our bag was lost so that made unnecessary chaos On our trip

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

It was an overnight flight and I desperately needed coffee before we landed, but Delta does only one beverage service, and that is shortly after takeoff, not before landing at 5 am.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

Cabin crew were excellent, very proffesional, polite and friendly, in flight snack was underwhelming, a packet of cheese biscuits, im sure KLM could run to a sandwich!

Legroom not all it could be, especially when the seat in front is reclined. Otherwise it was good, food and beverage were nice.

This portion of the flight was through Indigo. A local carrier. So all economy seating. No real service some refreshments for purchase standard economy stuff.

Transfer at Amsterdam airport is very convenient and the airport is easy to navigate. Boarding was also quick and easy. Cabin crew were excellent and the meals were good, although lacking in options.

Overall very positive. Boarding was quick and organized. Cabin was clean and seats were reasonably comfortable. Cabin crew was excellent and the meals provided were also of good quality

This fight left ahead of time which meant it arrived early which was great. Staff were very professional, but as with all these Short hop Flights the food was a disappointing snack There was no entertainment on this flight, but I did not expect any

Great boarding, great short flight but no entertainment whatsoever and no wifi. Prepare to disembark by a staircase.

Transfer at CDG to connecting KLM flight to Amsterdam was a NIGHTMARE. LONG WALKWAYS, NO MOVING WALKWAYS, POOR signage, Have to take a train & No staff visible to help navigate the maze. AVOID TRANSFER AT CDG AT ALL COST.

Good flight with KLM, friendly staff. Food was good, had much worse on other airlines. Selection of drinks also good enough for us. Entertainment was also good. The economy seats are ok and that’s it. For a 12 hour flight I think a little more comfort in the economy seats in pitch and softness would be highly appreciated by the customers and can makte the difference.

Everything you need to know for your flight from Portland to Bilbao

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