PDX - BIO

$671 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 9/7. 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.
1 adult
1 adult, Economy

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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Flights 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

dom., sep. 7 - vie., oct. 24
Air Canada Logo
7:40 pm - 5:50 pmPDX-BIO
37h 10m2 stops
Air Canada Logo
6:45 am - 9:20 amBIO-PDX
35h 35m2 stops
$671Air Canada
Find Deal
dom., sep. 14 - jue., oct. 23
Lufthansa Logo
8:30 am - 5:50 pmPDX-BIO
24h 20m2 stops
Lufthansa Logo
6:45 am - 6:46 pmBIO-PDX
21h 01m2 stops
$675Lufthansa
Find Deal
dom., sep. 7 - mar., oct. 21
United Airlines Logo
5:00 am - 11:25 pmPDX-BIO
33h 25m2 stops
United Airlines Logo
6:45 am - 12:28 amBIO-PDX
26h 43m3 stops
$685United Airlines
Find Deal
mié., sep. 10 - jue., oct. 23
United Airlines Logo
8:30 am - 6:20 pmPDX-BIO
24h 50m2 stops
United Airlines Logo
6:45 am - 12:28 amBIO-PDX
26h 43m3 stops
$689United Airlines
Find Deal
dom., oct. 19 - dom., oct. 26
 Logo
3:25 pm - 5:50 pmPDX-BIO
17h 25m2 stops
 Logo
6:40 am - 9:15 amBIO-PDX
34h 35m2 stops
sáb., oct. 18 - sáb., oct. 25
 Logo
7:40 pm - 5:50 pmPDX-BIO
37h 10m2 stops
 Logo
7:15 pm - 6:30 pmBIO-PDX
32h 15m2 stops
dom., oct. 19 - dom., oct. 26
Delta Logo
3:19 pm - 4:40 pmPDX-BIO
16h 21m2 stops
Delta Logo
6:50 am - 12:25 pmBIO-PDX
13h 35m1 stop
$773Delta
Find Deal
dom., oct. 19 - dom., oct. 26
Delta Logo
12:55 pm - 11:15 amPDX-BIO
13h 20m1 stop
Delta Logo
6:50 am - 12:25 pmBIO-PDX
13h 35m1 stop
$795Delta
Find Deal
sáb., oct. 18 - sáb., oct. 25
KLM Logo
1:15 pm - 11:15 amPDX-BIO
13h 00m1 stop
KLM Logo
12:00 pm - 12:25 pmBIO-PDX
33h 25m1 stop
$845KLM
Find Deal
dom., sep. 14 - mié., oct. 22
KLM Logo
12:55 pm - 10:45 pmPDX-BIO
24h 50m1 stop
KLM Logo
7:10 am - 4:05 pmBIO-PDX
17h 55m2 stops
$926KLM
Find Deal
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?

Good to know

Low seasonNovember
Cheapest flight$671
Best time to beat the crowds with an average 35% drop in price.
Most popular time to fly and prices are also 23% 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 $671 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?

    Star Alliance, SkyTeam, and oneworld 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 $916 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 $1,080 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.
8.0
DeltaOverall score based on 7981 reviews
7.9Entertainment
7.9Comfort
8.2Boarding
7.3Food
8.5Crew
Airline reviews

My experience on any Delta flight is always overshadowed by the time Delta removed me from a flight for no apparent reason.

2.0 MediocreGim, Jul 2025BGM - DTW
Read more Delta reviews

My experience on any Delta flight is always overshadowed by the time Delta removed me from a flight for no apparent reason.

Delayed and took off even later than the scheduled delay time

For a 69 year old with health problems I had the worse experience, no wheelchair when I entered a lady told me to sit and wait while a gentleman told me I had to walk to the Delta station, which I did. I had a carry on and a bag, and I was traveling with my service dog, which was on his carrier and the lady charged me for my carry on luggage, beside all the waiting cause of the delay, I had to walk to get my luggage cause no wheelchair showed up, I am so disappointed. I will get in touch with the company. I got home at 3:00 am, not good for my health situation.

Only issue was with seating. The economy fare we purchased did say there was no guarantee the three people in our party would be seated together, and we were not. At the gate, the agent told us more specifically, the fare we purchased meant we would be seated in middle seats only. This should just be made more obvious.

Great experience on Delta. Staff from baggage check to flight attendants were very courteous and professional. My only issue was a personal preference for pretzels instead of the chips and cookies that were offered.

There was no problems, just a little uncomfortable with seats that do not lay back a little

Always good but we must do something about people in rows ahead of you that don't put their seats back up when they are suppose to. And It's rough to not be able to even lean over to get something out of my purse.

Flight was delayed, 30+ bags had to be gate checked. Crew were very friendly!

Everything was good until we were boarding our connection flight in Atlanta, we were told to gate check our carry-on, but when we got inside the plane, there was plenty of room in the overhead.

Did not know my son and I had different seating arrangements. He was fine, but it was disappointing.

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!

The service was great. However the lounge only gets passing grade

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.

You should not have to pay for WiFi in business class

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

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

Information on your arrival and departure airports

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