PDX - BIO

$476 Find Cheap Flights from Portland to Bilbao

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Bilbao departing on 1/23. 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.
1 adult
1 adult, Economy, 0 bags

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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Everything you should know

Cheapest round-trip
$476
Delta
Fri 1/23Wed 1/28
PDX - BIO • 2 stops
Cheapest one-way
Multiple Airlines
Tue 12/16
PDX - BIO • multi-stop
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Portland to Bilbao (PDX-BIO)

 
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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to Bilbao

Fri, Jan 23 - Wed, Jan 28
Delta Logo
7:00 am - 5:20 pm
PDX
-
BIO
25h 20m2 stops
Delta Logo
6:50 am - 11:25 am
BIO
-
PDX
13h 35m1 stop
$476Delta
Fri, Jan 23 - Wed, Jan 28
Delta Logo
1:25 pm - 4:30 pm
PDX
-
BIO
18h 05m1 stop
Delta Logo
6:50 am - 11:25 am
BIO
-
PDX
13h 35m1 stop
$477Delta
Fri, Jan 23 - Wed, Jan 28
Delta Logo
7:00 am - 5:20 pm
PDX
-
BIO
25h 20m2 stops
Delta Logo
6:50 am - 6:50 pm
BIO
-
PDX
21h 00m2 stops
$486Delta
Fri, Jan 30 - Tue, Feb 3
United Airlines Logo
7:45 am - 11:20 pm
PDX
-
BIO
30h 35m2 stops
United Airlines Logo
11:35 am - 12:31 am
BIO
-
PDX
21h 56m2 stops
$489United Airlines
Fri, Jan 23 - Wed, Jan 28
Lufthansa Logo
3:50 pm - 11:20 pm
PDX
-
BIO
22h 30m2 stops
Lufthansa Logo
11:35 am - 6:10 pm
BIO
-
PDX
39h 35m2 stops
$499Lufthansa
Wed, Mar 18 - Wed, Mar 25
Lufthansa Logo
1:00 pm - 9:55 pm
PDX
-
BIO
24h 55m2 stops
Lufthansa Logo
7:25 am - 12:44 am
BIO
-
PDX
25h 19m2 stops
$561Lufthansa
Fri, Jan 30 - Fri, Feb 6
United Airlines Logo
1:24 pm - 11:20 pm
PDX
-
BIO
24h 56m3 stops
United Airlines Logo
12:50 pm - 12:43 am
BIO
-
PDX
20h 53m2 stops
$587United Airlines
Wed, Mar 18 - Wed, Mar 25
United Airlines Logo
1:39 pm - 9:55 pm
PDX
-
BIO
24h 16m2 stops
United Airlines Logo
7:25 am - 12:44 am
BIO
-
PDX
25h 19m2 stops
$589United Airlines
Fri, Jan 30 - Fri, Feb 6
United Airlines Logo
1:24 pm - 11:20 pm
PDX
-
BIO
24h 56m3 stops
United Airlines Logo
6:45 am - 12:43 am
BIO
-
PDX
26h 58m3 stops
$772United Airlines
Wed, Mar 18 - Wed, Mar 25
United Airlines Logo
1:00 pm - 11:20 pm
PDX
-
BIO
26h 20m3 stops
United Airlines Logo
7:25 am - 11:04 pm
BIO
-
PDX
23h 39m2 stops
$796United Airlines
Booking Insights

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 fly non-stop between Portland and Bilbao?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Portland to Bilbao.

There are 2 airlines that fly nonstop from Portland to Bilbao. They are Delta and KLM. The cheapest airline for this route is KLM, with the best round-trip deal found costing $476. On average, the best prices for this route can be found at KLM.

Good to know

Low seasonFebruary
Cheapest flight$476
Best time to beat the crowds with an average 48% drop in price.
Most popular time to fly and prices are also 12% lower on average.
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 $476 for a round-trip ticket.

  • 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 is the only airline alliance operating flights between Portland and Bilbao.

  • 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 $965 and an overall rating of 7.9, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $815 and an overall rating of 7.7.

  • 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.

Reviews of the 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.
7.9
DeltaOverall score based on 8009 reviews
8.1Boarding
7.9Comfort
7.3Food
8.5Crew
7.9Entertainment
Airline reviews

None of the airplane features were available during the flight.

4.0 OkayAnonymous, Dec 2025
JFK - SDQ
Read more Delta reviews

None of the airplane features were available during the flight.

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

The food is terrible. The staff is wonderful. Comfort is good.

Left on time, a bit delayed due to headwinds most of the trip.

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

Getting to the flight was arduous and lengthy. The flight itself was good but the food option wasn’t a good selection. I need to do a Kosher option on my return. Flight crew were nice

Good seats in Main cabin, excellent service and excellent landing

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

Terrible last row seats many seats available but no offer to move to better seat

Delay and had to run between flight to get my connection due to this delay but besides that the overall experience was ok. I arrived with just an hour of delay.

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Couldn’t get boarding pass in SLC even with help from a redcoat, so had to find a desk in AMS to get boarding pass. Technical problems so not sure why. Very inconvenient. The KLM app is not as user friendly as most apps. Also had to wait almost an hour on the tarmac for a fuel truck, which caused us to miss a connecting bus in LUX.

The immigration hall in Amsterdam was understaffed, so passport checking was slower than it should be for a major airport. They need to get the automatic readers up and running for non EU passport holders. Waiting in line after a long flight feels a bit abusive.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

Short flight so it was okay. Nice crew, all very pleasant and professional. We were near the back in row 27 so just as we got our drinks, we started our descent so had to drink very quickly!

KLM remains a quality flag carrier airline which maintains its standards whilst all their competitors are lowering theirs.

The baggage drop-off in Stuttgart is bad: after online check-in you cannot use the automated baggage drop off as indicated on the website. You can use the terminals but have to cue to 1 of three open and slowly working counters to drop the bags. took about 45 minutes wait time.

My flight was delayed by 6 hours then I missed BOTH of my connecting flights, I then had to stay in the AIRPORT at JFK because soooooo many people also suffered from missing flights and there was no hotels available. I would like to be compensated for this experience! I had to stay in the airport for over 16 hours!

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

Information on your arrival and departure airports