PDX - BIO

$341 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 9/1. 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
$800
Typical prices: $814-$815
Air Canada
Sat 4/11Tue 4/21
PDX - BIO • 3 stops
Cheapest one-way
$341
Multiple Airlines
Tue 9/1
PDX - BIO • 2 stops
Top airlines
Cheapest • from $800 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Portland and Bilbao. You'll need at least 1 connection.
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We hope you love your trip to Bilbao!
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

Sat, Apr 11 - Tue, Apr 21
Air Canada Logo
7:05 pm - 5:00 pm
PDX
-
BIO
36h 55m
3 stops
Air Canada Logo
6:50 am - 9:10 am
BIO
-
PDX
35h 20m
2 stops
$800Air Canada
Tue, May 19 - Tue, May 26
Lufthansa Logo
3:30 pm - 11:25 pm
PDX
-
BIO
22h 55m
2 stops
Lufthansa Logo
6:50 am - 7:05 pm
BIO
-
PDX
21h 15m
2 stops
$801Lufthansa
Sat, Apr 11 - Tue, Apr 21
United Airlines Logo
4:15 pm - 5:55 pm
PDX
-
BIO
40h 40m
2 stops
United Airlines Logo
6:50 am - 9:14 pm
BIO
-
PDX
23h 24m
2 stops
$809United Airlines
Wed, Apr 8 - Tue, Apr 21
Multiple Airlines Logo
11:56 am - 11:15 pm
PDX
-
BIO
26h 19m
2 stops
Multiple Airlines Logo
9:15 am - 9:38 pm
BIO
-
PDX
21h 23m
2 stops
$812Multiple Airlines
Wed, Apr 8 - Tue, Apr 21
Iberia Logo
11:56 am - 5:50 pm
PDX
-
BIO
20h 54m
2 stops
Iberia Logo
9:15 am - 9:38 pm
BIO
-
PDX
21h 23m
2 stops
$813Iberia
Sat, Apr 11 - Tue, Apr 21
Air Canada Logo
7:05 pm - 5:00 pm
PDX
-
BIO
36h 55m
3 stops
Air Canada Logo
7:15 am - 10:34 pm
BIO
-
PDX
24h 19m
3 stops
$820Air Canada
Sat, Apr 11 - Tue, Apr 21
Multiple Airlines Logo
11:47 pm - 10:05 pm
PDX
-
BIO
37h 18m
2 stops
Multiple Airlines Logo
6:45 am - 11:57 pm
BIO
-
PDX
26h 12m
2 stops
$822Multiple Airlines
Sat, Aug 1 - Thu, Aug 13
Multiple Airlines Logo
5:15 am - 11:15 pm
PDX
-
BIO
33h 00m
2 stops
Multiple Airlines Logo
6:45 am - 10:57 am
BIO
-
PDX
37h 12m
2 stops
$828Multiple Airlines
Mon, Apr 27 - Mon, May 4
United Airlines Logo
5:35 pm - 11:25 pm
PDX
-
BIO
20h 50m
2 stops
United Airlines Logo
11:55 am - 10:59 pm
BIO
-
PDX
44h 04m
2 stops
$845United Airlines
Tue, May 19 - Tue, May 26
Lufthansa Logo
3:30 pm - 5:55 pm
PDX
-
BIO
17h 25m
2 stops
Lufthansa Logo
6:50 am - 7:05 pm
BIO
-
PDX
21h 15m
2 stops
$846Lufthansa
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.

How much is a round-trip flight from Portland to Bilbao?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Portland to Bilbao departing in April.

Good to know

Low seasonNovember
Cheapest flight$341
Best time to beat the crowds with an average 39% drop in price.
Most popular time to fly and prices are also 5% 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 $341 for a one-way ticket and $800 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 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 7.8.

  • 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.

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 8288 reviews
7.9Comfort
8.5Crew
8.1Boarding
7.2Food
7.8Entertainment
Airline reviews

Miserable. This entire round trip was miserable. I booked evening flights to and from Detroit on consecutive days that should have had me at my destination by 10:30. Instead I arrived after 3am on my flight to Detroit and after midnight on my return. Multiple unforced errors like awaiting bags to get put on the plane for almost an hour in Detroit and a 20 minute delay to pull up to the gate in Atlanta has me rethinking my assumption that delta is the best and most reliable airline

2.0 MediocreKyle, Mar 2026
DTW - ATL
Read more Delta reviews

Miserable. This entire round trip was miserable. I booked evening flights to and from Detroit on consecutive days that should have had me at my destination by 10:30. Instead I arrived after 3am on my flight to Detroit and after midnight on my return. Multiple unforced errors like awaiting bags to get put on the plane for almost an hour in Detroit and a 20 minute delay to pull up to the gate in Atlanta has me rethinking my assumption that delta is the best and most reliable airline

Perhaps when you’re sitting in 1st class and the crew closes the bathroom for the pilots, there could be a notification other than holding your hands up as a blockade when you get there and you’re told the restrooms are closed please turn around … especially at night when visibility is poor and you’re met by a flight attendants with their arms up

First class is comfortable. Enjoyed a movie and was able to relax compared to coach.

Loved flying First Class. Very comfortable. The seat was amazing. Enjoyed a movie and was able to relax so much better than in coach.

We landed and sat on the tarmac for 45 minutes because they only have one gate at the airport and there was another plane running late so we had to wait

The WiFi was not working. That made for a long flight.

With Aeromexico it ended up good but with Delta it was bad because we did everything through Delta... Showed up at the Delta terminal... It was the wrong place! Nothing ever told us to go to the Aeromexico terminal. It said "in partnership with Aeromexico" but I was never instructed to check in with them or go to their terminal. We had to haul @$$ running through the airport and almost didn't make it thanks to this poor communication. 👎🏽

Absolutely no communication on why there's a delay and multiple flight time reschedules. I would have canceled the flight and drove back home if I known it was going to be rescheduled 3 or 4 times.

Another late night flight and MORE men belligerently drinking and yelling. I had to move from first to economy because they were so obnoxious and disruptive. Crazy to go from a cozy chair to cardboard when you were supposed to be in first. Delta allows was too much drinking which leads to belligerent behavior.

I was in first class and literally the men behind me were so aggressively loud I moved myself to economy. This has become so common on Delta - people using audio without headphones, and men on 12am / late night flights drinking and yelling to talk to each other which prevents anyone around them from resting. Pretty crazy to have to move from first to economy (poorer service, less comfort...). Wild wild. Looking into other airlines.

It was really nice journey i personally recommend klm flight

The crew were unprofessional with a racist element. I was physically abused as well from one of the crew members

Crew is not the cheerful type. very slow meal service (this is their style as have flown this many times)

Empty seats next to me - wish it had been for a longer flight!!

Flight was on time, staff are friendly and helpful onboard.

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.

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

Information on your arrival and departure airports