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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$477
United Airlines
Sat 4/11Wed 4/22
BOI - BIO • 2 stops
Cheapest one-way
$244
United Airlines
Sun 5/10
BOI - BIO • 2 stops
Top airlines
United Airlines
Cheapest • from $477 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
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

Sat, Apr 11 - Wed, Apr 22
United Airlines Logo
2:37 pm - 11:25 pm
BOI
-
BIO
48h 48m
2 stops
United Airlines Logo
7:15 am - 10:35 pm
BIO
-
BOI
23h 20m
2 stops
$477United Airlines
Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
12:16 pm - 9:55 pm
BOI
-
BIO
25h 39m
2 stops
United Airlines Logo
12:45 pm - 11:17 am
BIO
-
BOI
30h 32m
2 stops
$478United Airlines
Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
6:25 am - 9:55 pm
BOI
-
BIO
31h 30m
2 stops
United Airlines Logo
6:45 am - 11:17 am
BIO
-
BOI
36h 32m
2 stops
$479United Airlines
Wed, Feb 25 - Sun, Mar 1
Multiple Airlines Logo
5:20 am - 11:30 am
BOI
-
BIO
22h 10m
2 stops
Multiple Airlines Logo
6:50 am - 8:55 pm
BIO
-
BOI
22h 05m
2 stops
$486Multiple Airlines
Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
2:40 pm - 9:55 pm
BOI
-
BIO
23h 15m
2 stops
United Airlines Logo
6:45 am - 9:11 pm
BIO
-
BOI
22h 26m
2 stops
$488United Airlines
Mon, Mar 9 - Mon, Mar 16
Multiple Airlines Logo
1:31 pm - 4:55 pm
BOI
-
BIO
20h 24m
3 stops
Multiple Airlines Logo
5:35 pm - 12:42 pm
BIO
-
BOI
26h 07m
2 stops
$602Multiple Airlines
Sat, Apr 11 - Wed, Apr 22
Finnair Logo
1:29 pm - 11:15 pm
BOI
-
BIO
25h 46m
2 stops
Finnair Logo
6:45 am - 10:38 pm
BIO
-
BOI
23h 53m
2 stops
$656Finnair
Sun, Mar 29 - Fri, Jun 19
United Airlines Logo
10:35 am - 5:55 pm
BOI
-
BIO
23h 20m
2 stops
United Airlines Logo
6:50 am - 11:59 pm
BIO
-
BOI
25h 09m
2 stops
$734United Airlines
Sun, Mar 29 - Thu, Jun 18
United Airlines Logo
5:00 am - 11:25 pm
BOI
-
BIO
34h 25m
2 stops
United Airlines Logo
6:50 am - 4:49 pm
BIO
-
BOI
41h 59m
2 stops
$740United Airlines
Thu, Apr 2 - Wed, Jun 17
United Airlines Logo
6:15 am - 11:25 pm
BOI
-
BIO
33h 10m
2 stops
United Airlines Logo
12:30 pm - 11:05 pm
BIO
-
BOI
18h 35m
2 stops
$794United Airlines
Booking Insights

KAYAK's insights & trends for Boise to Bilbao flights

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

Which airlines provide the cheapest flights from Boise 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 Boise to Bilbao were found on United Airlines ($477) and Finnair ($656).

Good to know

Low seasonNovember
Cheapest flight$244
Best time to beat the crowds with an average 45% drop in price.
Most popular time to fly with an average 29% 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 $477 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 $1,317 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 8110 reviews
8.1Boarding
7.9Comfort
7.8Entertainment
7.2Food
8.5Crew
Airline reviews

Outdated equipment in disrepair, wifi inoperable. Broken seats, taped air vents, generally poor condition, the 717 showed its age and lack of upkeep.

2.0 MediocreGary, Jan 2026
CLE - DTW
Read more Delta reviews

Outdated equipment in disrepair, wifi inoperable. Broken seats, taped air vents, generally poor condition, the 717 showed its age and lack of upkeep.

My flight out of Baton Rouge to Atlanta was delayed by a half hour. This got us into Atlanta airport 30 minutes late. I ran through the airport to get to my connecting flight. As I approached the boarding gate, I saw the boarding door was still open and a passenger was being checked in. But when I got to the gate, the boarding agent told me they had already given away my seat and there were no empty seats on that flight. So I had to take a later flight. That has never happened to me before. Very frustrating.

Connection through Atlanta was difficult. Mechanical issue on plane caused a two hour delay. New gate was a mile away.

No WiFi. Comfort plus should have alcohol provided, crew only offered water or tea. Who the heck wants tea?

The flight was delayed and oversold. I volunteered to give up my seat for compensation. Thinking I could get a good night's sleep instead of arriving home at 2 am. It took over an hour to get the new reservation confirmed, three different gate attendants, and two red coats. It took even longer to confirm the overnight hotel, and when I arrived, the line was 45 minutes long, with two people checking in, and at least 15 people slowly, very slowly—no food except frozen convenience food, no coupon for food from airlines. Slept, headed back to the airport, and that flight had an equipment change and a gate change just as they were about to board. It took an additional hour to board as they cleaned the plane from storage.

There was no wifi available on this flight. And there were no screens, no onboard entertainment, no entertainment options at all. It was like travelling in the 1990s again, except without even a main screen for options. Seats, as usual, were tight and uncomfortable.

Good seat comfort ORF to ATL. Bad seat ATL to SEA (terrible lumbar support, hard, ouch)..

Because I was moved to an exit row, the snacks in economy comfort, the selection of snacks was better.

I upgraded to first. Quick and easy boarding. Comfortable seat with power and a nice IPA.

Probably not the fault of Delta but there was delay after delay after delay and I ended up getting home 4 hours later then I should have at 1:30 in the morning

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!

Unfortunately weather delayed our flight waiting for our plane to arrive and due to a little snow time was needed to deice the plane so departure was very delayed and I missed the connecting flight

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

I wish there were outlets to charge my iPhone. The crew was great; we had a female pilot who was great with explaining what was happening and delays,

The flight crew where really good. Better then the crew from BNE to SFO

Food should be changed in menu Many muslims travels in this airlime they need to add one Halal meal

Delayed, toilets did not flush, pilot parked to far away from Gate

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

Ineffective communication with United resulted in lost baggage. Their Baggage Tracing counter at MUC was shut down from 11:00-14:15 on my arrival. Undertrained, underinformed staff had me Running all over MUC to find someone to help me to no avail. Staff was rude, unhelpful, and unable to effectively use the systems they did have operational. They refused to contact United in any way or provide any accommodation or other resources while I waited for my luggage. This has destroyed my downstream itinerary. If they had even the slightest visibility I may have been able to reschedule/plan, but again, their staff provided nothing, and did nothing more than their website, which doesn’t even work on a standard phone browser. Miserable failure at all levels that weren’t associated with the operation of the aircraft.

Miserable. They moved my seat, but canceled the next leg of my flight. I resolved the issue at my transfer, but that resulted in lost luggage that has taken days off my schedule with no resolution. Worse, they fail to interface effectively with Lufthansa, forcing me to bounce between two equally useless help desks. The apps are unable to handle the situation, the bag dropped off the tracker, and while the call centers are polite, they do not provide written information to assist with cross-airline communication.

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

Information on your arrival and departure airports