BOI - BIO

$244 Find Cheap Flights from Boise 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 Boise to Bilbao departing on 5/10. 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 Boise 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 Boise to Bilbao, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$555
United Airlines
Wed 8/5Wed 8/19
BOI - BIO • 2 stops
Cheapest one-way
$244
United Airlines
Sun 5/10
BOI - BIO • 2 stops
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We hope you love your trip to Bilbao!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boise to Bilbao (BOI-BIO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boise 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 Boise to Bilbao

Wed, Aug 5 - Wed, Aug 19
United Airlines Logo
6:30 am - 11:25 pm
BOI
-
BIO
32h 55m
2 stops
United Airlines Logo
6:50 am - 11:59 pm
BIO
-
BOI
25h 09m
2 stops
$555United Airlines
Wed, Aug 5 - Wed, Aug 19
Multiple Airlines Logo
1:36 pm - 11:15 pm
BOI
-
BIO
25h 39m
2 stops
Multiple Airlines Logo
6:45 am - 12:46 pm
BIO
-
BOI
38h 01m
2 stops
$597Multiple Airlines
Wed, Mar 25 - Wed, Apr 1
United Airlines Logo
2:40 pm - 6:05 pm
BOI
-
BIO
20h 25m
2 stops
United Airlines Logo
11:55 am - 11:06 am
BIO
-
BOI
31h 11m
2 stops
$621United Airlines
Wed, Feb 25 - Sun, Mar 1
Multiple Airlines Logo
1:43 pm - 10:25 pm
BOI
-
BIO
24h 42m
2 stops
Multiple Airlines Logo
6:50 am - 8:55 pm
BIO
-
BOI
22h 05m
2 stops
$687Multiple Airlines
Thu, Feb 26 - Sun, Mar 1
Multiple Airlines Logo
10:41 am - 5:20 pm
BOI
-
BIO
22h 39m
2 stops
Multiple Airlines Logo
6:50 am - 8:55 pm
BIO
-
BOI
22h 05m
2 stops
$688Multiple Airlines
Thu, Feb 26 - Sun, Mar 1
United Airlines Logo
7:11 am - 9:55 pm
BOI
-
BIO
30h 44m
2 stops
United Airlines Logo
6:45 am - 11:38 pm
BIO
-
BOI
24h 53m
2 stops
$689United Airlines
Thu, Feb 26 - Sun, Mar 1
United Airlines Logo
10:25 am - 9:55 pm
BOI
-
BIO
27h 30m
2 stops
United Airlines Logo
12:45 pm - 11:17 am
BIO
-
BOI
30h 32m
2 stops
$695United Airlines
Wed, Mar 25 - Wed, Apr 1
Multiple Airlines Logo
6:00 am - 8:30 am
BOI
-
BIO
19h 30m
3 stops
Multiple Airlines Logo
9:15 am - 10:23 pm
BIO
-
BOI
21h 08m
2 stops
$868Multiple Airlines
Booking Insights

Good to know

Low seasonNovember
Cheapest flight$244
Best time to beat the crowds with an average 40% drop in price.
Most popular time to fly with an average 39% increase in price.
Flight from Boise to Bilbao

When to book flights from Boise to Bilbao

Are your dates flexible? Find out the best times to travel from Boise 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 Boise to Bilbao

  • What is the cheapest flight from Boise to Bilbao?

    In the last 3 days, the lowest price for a flight from Boise to Bilbao was $244 for a one-way ticket and $555 for a round-trip.

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

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

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

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

  • Which airline alliances offer flights from Boise to Bilbao?

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

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

    The two airlines most popular with KAYAK users for flights from Boise to Bilbao are Delta and KLM. With an average price for the route of $1,267 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 $1,317 and an overall rating of 7.7.

  • How does KAYAK find such low prices on flights from Boise 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 Boise to Bilbao.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bilbao from Boise 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 Boise 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 Boise with another airline. Booking your flights between Boise 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 Boise 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 Boise up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Boise to Bilbao

 
See real verified KAYAK customer reviews for airlines flying from Boise 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 Boise 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 8174 reviews
7.2Food
7.8Entertainment
8.1Boarding
8.5Crew
7.9Comfort
Airline reviews

The flight was great as well as the airline staff

10.0 ExcellentPatty, Feb 2026
TPA - ATL
Read more Delta reviews

The flight was great as well as the airline staff

First class and monitors weren’t working for mine & my husbands. Eventually fixed, but quite annoyed as we bought first class. Also, No foot rests.

Prior to takeoff, the pilot told us there was a possibility of not being able to land and going to Portland. Well that happened, we took off and then did 8 loops around Spokane before the pilot told us we ran out of fuel and had to go to Portland. So for a 35 minute flight we have now been on the plane for 3 hours (boarded at 6:50 am and landed in Portland at 10:30). Then, we just sat in Portland's airport with no updates of when we can start heading back. All of a sudden, our pilots and crew just left, leaving us stranded in a different city and state. We continued to sit in Portland until we finally got a new crew assigned and boarded the plane (This was from 10:30-2). We then sat on the plane for an additional hour before take off because they had to count us multiple times. We finally landed in Spokane at 3:55 PM. So a flight that should have taken at max an hour took us 10 hours and we missed the majority of the recruiting event we went for.

It was delayed but other than that it was great.

Got on the plane and sat there for an hour before departure.

Second flight in a row where the entertainment system is broken. 5 hour long flight with no entertainment and flight attendants did not seem interested in resolving the matter. Very shocked to be treated this poorly considering I paid for a first class experience and have Diamond Medallion status.

They double booked seats, the gate staff changed my ticket as I was boarding she went over to the computer and changed it without telling me. She messed up an entire three row section for me and others. Other travelers were outraged but the gate staff were so rude, so condescending saying it wasn't their problem to solve. I would rate this a zero if I could. Will not fly Delta again I'll stick with United and American.

It was nt delta. It was aeromexo. Service was awful. They served a very small drink and NO snack for a 3hr and 35min flight. Then for the first 30 min of the flight is was talk and talk over head interruption the movie/ show i picked to watch.

Comfort seating was on the tight side. Maybe it was a smaller plane(?)

I was given middle seat on this flight and prior Boston to Seoul flight That is a problem for long flights, Kayak system did not give me a change to select my seats and assigned me middle seats regardless of my elevated status in Delta. This needs immediate attention.

I’m grateful for the KLM Air France shuttle bus service to Ottawa. However due to construction and other issues related to the chaotic Uber pickup system at YUL, it’s a challenge to find the Kelios bus service to Ottawa. The signs are not clear or even available. No staff to guide passengers. It’s a stressful experience.

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

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

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.

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.

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

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.

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!

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!

The power at the seat didn't work and the seat itself was difficult to adjust - this was a business class seat. Flight attendant gave me miles to compensate. The attendant was very professional and on top of his game the entire flight.

Terrible. Our first time back on United for 10 years, the seats in Polaris class are small and uncomfortable. They have squished too many people in to get more $$$. The staff are not friendly and not wanting to accommodate. I asked for two salads rather than a main meal and was advised no we wont do that. Then asked what I would like for breakfast and given something else anyway. I will not be flying United International anytime soon.

Same thing as flight from Pheonix to Newark. Uograded and Promised extra leg room and when I got to the seat it had none.

I upgraded my seat and was promised it would be next to the emergency door for extra leg room and they said it was premium plus but it was at the back of the plane...same thing happened from Newark to Dubai

Everything except the food and entertainment. It was a great experience though

Bad food, bad service, cold cabin with no additional blankets when asked for (they told me they don’t provide additional blankets). I’m a frequent traveler and this is one of the worst companies I traveled with (by the way I thought that I booked my ticket with Lufthansa but I didn’t see that the flights were handled by United).

United Airlines is my preferred airlines and I am thankful for Gary who also help support me on the phone to switch my flight literally last min.

Not being stranded in Chicago for her airport to 11:30 tomorrow morning the 3rd

the whole trip was smooth, and as comfortable as flying is these days. flight crew was friendly and very courteous and helpful.

The attendant on board was amazing. She should be doing business/first international long haul.

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

Information on your arrival and departure airports