$307 Find Cheap Flights from Boise to Spain

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 Spain departing on 11/5. 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.
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1 adult, Economy

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Cheap Flights from Boise to Spain

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Madrid
Madrid2 stops$534
Málaga
Málaga2 stops$625
Bilbao
Bilbao2 stops$576
Madrid
Madrid2 stops$534
Málaga
Málaga2 stops$625
Bilbao
Bilbao2 stops$576

Book Cheap Boise to Spain Plane Tickets

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

Sun, Nov 2 - Fri, Nov 14
Air Canada Logo
5:20 am - 7:00 amBOI-MAD
17h 40m2 stops
Air Canada Logo
1:35 pm - 10:45 pmMAD-BOI
41h 10m2 stops
$534Air Canada
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Sat, Nov 1 - Fri, Nov 14
Air Canada Logo
2:31 pm - 8:00 amBOI-MAD
34h 29m2 stops
Air Canada Logo
1:35 pm - 10:45 pmMAD-BOI
41h 10m2 stops
$540Air Canada
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Mon, Oct 20 - Wed, Oct 29
United Airlines Logo
12:35 pm - 1:15 pmBOI-BCN
16h 40m1 stop
United Airlines Logo
3:05 pm - 1:44 pmBCN-BOI
29h 39m2 stops
$553United Airlines
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Mon, Oct 20 - Wed, Oct 29
United Airlines Logo
2:44 pm - 2:00 pmBOI-BCN
15h 16m1 stop
United Airlines Logo
3:05 pm - 11:39 amBCN-BOI
27h 34m1 stop
$558United Airlines
Find Deal
Wed, Feb 18 - Fri, Feb 27
American Airlines Logo
1:20 pm - 1:35 pmBOI-MAD
16h 15m2 stops
American Airlines Logo
1:00 pm - 9:09 pmMAD-BOI
16h 09m1 stop
$561American Airlines
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Wed, Oct 29 - Fri, Nov 14
Delta Logo
5:25 am - 7:00 amBOI-MAD
18h 35m2 stops
Delta Logo
10:00 am - 12:35 amMAD-BOI
22h 35m2 stops
$562Delta
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Sat, Nov 1 - Thu, Nov 13
Delta Logo
1:39 pm - 9:15 amBOI-MAD
36h 36m1 stop
Delta Logo
11:15 am - 10:25 pmMAD-BOI
19h 10m1 stop
$563Delta
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Wed, Oct 1 - Tue, Oct 7
American Airlines Logo
1:38 pm - 3:50 pmBOI-BCN
18h 12m2 stops
American Airlines Logo
10:45 am - 10:22 pmBCN-BOI
19h 37m2 stops
$591American Airlines
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Thu, Oct 16 - Thu, Oct 23
Iberia Logo
1:33 pm - 8:20 pmBOI-BCN
22h 47m2 stops
Iberia Logo
12:20 pm - 10:24 pmBCN-BOI
18h 04m1 stop
$618Iberia
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Tue, Nov 4 - Sat, Nov 15
Iberia Logo
7:00 am - 6:15 amBOI-MAD
15h 15m1 stop
Iberia Logo
12:55 am - 10:03 pmMAD-BOI
29h 08m1 stop
$644Iberia
Find Deal
Booking Insights

KAYAK's insights & trends for Boise to Spain flights

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

What is the cheapest month to fly from Boise to Spain?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boise to Spain, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boise to Spain is February, when tickets cost $634 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $1,647 and $1,342 respectively.

What’s the cheapest day of the week to fly from Boise to Spain?

The average price of all round-trip flights from Boise to Spain clicked on KAYAK for each day over the last 12 months.

For Boise to Spain, Sunday is the cheapest day to fly on average and Friday is the most expensive. Flying from Spain back to Boise, the best deals are generally found on Tuesday, with Friday being the most expensive.

Good to know

Low seasonFebruary
Cheapest flight$307
Best time to beat the crowds with an average 33% drop in price.
Most popular time to fly with an average 23% increase in price.
Flight from Boise to Barcelona

FAQs - booking Spain flights

  • How does KAYAK find such low prices on flights from Boise to Spain?

    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 Spain.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Boise to Spain 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 Spain?

    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 from Boise to Spain with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boise to Spain?

    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 from Boise to Spain up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Spain?

    The cheapest time of day to fly to Spain is generally at night, when round-trip flights cost $842 on average. Morning departures are around 16% more expensive than evening flights, on average. The most expensive time of day to fly to Spain is generally in the morning, which is peak travel time and where the average cost of a ticket is $1,010.

Reviews of the top 5 airlines serving from Boise to Spain

 
Need help choosing which airline to fly with from Boise to Spain? 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 7972 reviews
8.2Boarding
7.3Food
7.9Comfort
7.9Entertainment
8.5Crew
Airline reviews

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

8.0 ExcellentG, Sep 2025ATL - LAS
Read more Delta reviews

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Nothing special. The crew never went out of their way for anything.

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

On this flight I felt the food offering was not as complete as on previous flights. The tomato salad was a bit off and there was nothing additional such a bread or butter. The breakfast was only one option, so you either ate what they had or ate nothing. The crew was efficient, but most seemed frustrated throughout the flight. The flight arrived early and was obstacle-free, so I’m overall quite happy, but the shine in the rest of the experience just wasn’t there.

The seats got pretty uncomfortable pretty fast. The armrests are bigger than on other planes, so I had less room in the actual seat. My butt hurt by the end of the flight. :/ comfort was the primary issue. The crew were fantastic!

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.

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

Our first flight was delayed so we missed our connecting flight. However it was easy to book a later flight on their app.

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 professional, polite and friendly, boarding was seemless, but come on KLM surely you can do better than a pack of cheesy biscuits as an inflight snack

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.

You should not have to pay for WiFi in business class

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

IAD with the archaic people movers is just a place to be avoided.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Tastless food and too obvious lack of enthusiasm for service in the economy vesus business class

All of the United employees I interacted with were professional and courteous. The aircraft was clean, the food on the flight was good. No complaints here.

I had no checked baggage but was required to hand over carry on baggage at the door of the plane. There was a lot of overboard space in the plane and I was one of the last ones. I ran to get my carry on but it was gone. I was given back at the plane door in Toronto, so the wait was not as long as it would have been at the carousel.

Armrest controller on my seat 35D and nextbooennseat 35E did not work right. Hard to press buttons to recognize and 35D had constantnpressure either upmost down somit was nearly impossible to make selections. .

I flew with my dog and had already purchased my dog’s ticket. Even that morning I had called costumer service to insure that my husband and I had seats together since the website was giving me an error when choosing our seats and the representative mentioned our dog. I showed up early to the airport and when I got to the gate and we started boarding I was help back and told that I was supposed to have a yellow tag and that I should have checked in at the counter for them to give me that tag. I was not aware of this, the representative on the phone did not say anything. Nor did I see it anywhere in the checking process online, so if you travel with a pet and are not checking in luggage, just know that you still have to go to the check in counter when arriving at the airport unless you want to be the last one to board and not have room for your carry on in the overhead bins. Other than that, I had a great experience.

Once we got in the air the pilot made up some of the time of the delay. So that was really nice.

We had a layover from YVR to Denver. We bought 4 bottles of Absolut Vodka at the YVR Duty Free for $116.20, after going through security and American Customs Pre Clearance at YVR, Vancouver. When we landed in Denver, United put us behind the American Customs as well as TSA again for some reason. We were forced to go through American Customs and TSA again. TSA confiscated our rightfully owned Duty Free Absolut Vodka bottles. Because United incorrectly forced our flight behind American border and TSA again, we missed the connecting flight. After United put us on a later flight, we eventually arrived in Chicago very late, with hardly any sleep. I am looking for compensation from United for our incorrectly confiscated Absolut Vodka bottles worth $116.20, as well as compensation for incorrectly putting us behind American Customs and TSA again, causing us to miss our connecting flight, making us arrive extremely late in Chicago.

From the first moment you interact with United Airlines, you can expect nothing less but extreme frustration. The baggage handler at the bag drop seems completely unbothered by the presence of customers waiting in line. No help was extended to load the baggage whatsoever. And if any of your bags is overweight by 0.01 pound they will make you re-distribute everything in your suitcase just to play power trip. When it was time to board no help was extended to customers to locate their seats. Moreover. It was a chaotic mess at the gate when it was unclear who should board first and everyone just bunched up, trying to get on the plane. I am sure the crew was doing their best to perform their jobs while being paid their wages however it shouldn’t be that hard to smile once or twice when you’re in the business if serving customers. It is a shame for the United States of America to have a flagship carrier of such low caliber. Our flight was also delayed by about an hour and a half due to further delays prior to our inbound flight. Being someone who has travelled for both business and leisure in Asia, Europe, and South America I have never experienced such poor quality of service.

Don’t know they cancelled the flight day before I was to leave. They sent a email at 9:00 pm at night saying they cancelled. That is the smooth way to say we don’t want your business! I think they didn’t have enough people booking so they cancelled the flight! It’s all about the money anymore there is no honesty in business.

Having to reschedule flights a day later, they loaded by luggage on the wrong plane from Little rock now I have to HOPE they deliver it to where im staying like they said would. International flight crew was very disgruntled and not very friendly.

We will be writing a long, detailed letter to corporate about our awful experience with American airlines.

It took way too long to diagnose and solve the problem of a broken crew member cabin seat. Though compensation for the volunteer who left the flight was very kind.

The entertainment package was vast and the selections were very current. Keep updating it was great.

The seat was so hard my tailbone was aching The crew was kind of a b**** because I made a joke that I didn't care if they close the door I total c*** when she was trying to f****** act like she was mad at me because I said that The flight was bumpy. Sure you didnt have control over that.

Our bags took a long time to get unloaded once we landed.

Boarding: Boarding was a bit of a mess. Our tickets indicated "BC" for Business Class, but we and many others were confused as that was not indicated anywhere in the airport, so we didn't know when we're supposed to board. The airplane: The airplane was nice. However, we sat near the back of the business class cabin and the flight attendants and passengers from other cabins would constantly move the curtain (which was very loud), preventing me from fallling asleep on my 8 hour flight. The flight crew: Amazing, generally. However, they nearly forgot to serve breakfast to me. The flight food: I was able to select my meal for dinner, which was really good. Breakfast was a bit of a mess, however. The crew forgot to serve me breakfast until the last minute. Very little was available by the time they remembered. The entertainment: Paltry, underwhelming, and dated. Not one new movie was available. Bottom line: For the money, you might want to consider other options for your international business class flights.

We fly American Airlines quite a bit. And we always fly business class when traveling internationally. We were a bit disappointed with the comfort of this particular plane as well as the entertainment options.

Flight was delayed not sure why no explanation given and no apologies either. Otherwise the flight was fine

We liked the flight but while we purchased an aisle seat, our seats had a different configuration on this flight. A fellow passenger suggested that the airplane had been changed. Too bad we were not informed and had no chance to modify our seat preferences. We were stuck in the window and middle seats with no chance to walk around and go to the bathroom without disturbing our sleeping fellow passenger.

Boarding an international flight via several sets of stairs and shuttle busses to the tarmac even when multiple jet-bridges were empty at Madrid airport (the hub for Iberia) was not pleasant. I was fine, but a lot of elderly folks and families with kids were struggling. A bad way to start a flight. Business class seats were nice, although not cleaned well from the prior flight.

This was a short flight. We sat in business class so we we were served a warm meal, which was nice. The flight attendants were very attentive, professional, and kind.

The flight was great; I don't see any area of improvement.

The crew were not very personable. The crew did not serve tea or coffee. The bathroom was not kept clean. Two out of the 5 toilets in the cabin weren't working.

Delayed first flight Geneva Madrid.. We didn’t miss our 2nd flight only because the 2nd flight Madrid Dallas was 1h delayed. However we did end up missing the 3rd leg Dallas Austin. Luggage didn’t show up in Dallas. So we re missing 2 suit cases. Customer service sent us to a hotel in Dallas. Only one room booked for 5!! Pretty bad experience overall. I won’t book a flight on Iberia in the future

Crew was excellent, great customer service, checked luggage took 1 hour and a half to come out at the baggage claim, the only negative thing about the flight.

Horrible experience airline crew was unprofessional. Flight was delayed. Suit cases did not arrive. Never flying iberia again

People point to America as the model of late stage capitalism. My friends, airlines in america at least give you WiFi, and they haven’t quite smashed people into cardboard tv dinner trays yet. Iberia has mastered the tv dinner seat and WiFi is 20 euros. Be serious yall.

Iberia lost my bag, said they found it in another country, said they sent it to me, but never did. Went my whole trip without my stuff, but expecting it to show up because that’s what they said would happen. Their communication sucks, their website sucks, and to top it all off, their seats are small and uncomfortable. They’re bad at their jobs and they should feel bad about themselves. Do not even get me started on the flight home. AVOID!

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