BOI - BCN

$357 Find Cheap Flights from Boise to Barcelona

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 Barcelona departing on 10/12. 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 Barcelona-El Prat Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boise to Barcelona, 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 Barcelona, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$699
Typical prices: $897-$1,429
Virgin Atlantic
Sun 10/18Sat 10/24
BOI - BCN • 1 stop
Cheapest one-way
$357
Typical prices: $440-$547
American Airlines
Mon 10/12
BOI - BCN • 2 stops
Top airlines
Cheapest • from $699 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Boise and Barcelona. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $885 (round-trip)
Shortest trip • 13h 54m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 57% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+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 Barcelona!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boise to Barcelona (BOI-BCN)

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

Sun, Oct 18 - Sat, Oct 24
Virgin Atlantic Logo
1:43 pm - 12:50 pm
BOI
-
BCN
15h 07m
1 stop
Virgin Atlantic Logo
11:00 am - 10:03 pm
BCN
-
BOI
19h 03m
2 stops
$699Virgin Atlantic
Sun, Oct 18 - Wed, Oct 28
American Airlines Logo
2:57 pm - 6:25 pm
BOI
-
BCN
19h 28m
2 stops
American Airlines Logo
10:40 am - 10:17 pm
BCN
-
BOI
18h 37m
1 stop
$765American Airlines
Sun, Oct 18 - Wed, Oct 28
United Airlines Logo
6:50 pm - 2:20 pm
BOI
-
BCN
35h 30m
1 stop
United Airlines Logo
12:35 pm - 4:59 pm
BCN
-
BOI
59h 24m
3 stops
$766United Airlines
Wed, Nov 11 - Thu, Nov 26
United Airlines Logo
6:30 am - 9:00 am
BOI
-
BCN
18h 30m
2 stops
United Airlines Logo
3:10 pm - 11:06 pm
BCN
-
BOI
15h 56m
1 stop
$769United Airlines
Sun, Dec 6 - Wed, Dec 9
United Airlines Logo
6:55 pm - 9:00 am
BOI
-
BCN
30h 05m
2 stops
United Airlines Logo
10:30 am - 9:16 pm
BCN
-
BOI
18h 46m
2 stops
$773United Airlines
Sun, Oct 18 - Sat, Oct 24
Multiple Airlines Logo
2:08 pm - 10:10 pm
BOI
-
BCN
24h 02m
2 stops
Multiple Airlines Logo
8:00 am - 11:58 pm
BCN
-
BOI
23h 58m
2 stops
$796Multiple Airlines
Sun, Aug 9 - Thu, Aug 20
Multiple Airlines Logo
10:52 am - 10:10 pm
BOI
-
BCN
27h 18m
2 stops
Multiple Airlines Logo
8:00 am - 10:27 pm
BCN
-
BOI
22h 27m
2 stops
$800Multiple Airlines
Sun, Aug 9 - Thu, Aug 20
Multiple Airlines Logo
10:52 am - 10:10 pm
BOI
-
BCN
27h 18m
2 stops
Multiple Airlines Logo
8:00 am - 10:27 pm
BCN
-
BOI
22h 27m
2 stops
$801Multiple Airlines
Mon, Aug 3 - Wed, Aug 19
Multiple Airlines Logo
10:52 am - 10:10 pm
BOI
-
BCN
27h 18m
2 stops
Multiple Airlines Logo
8:00 am - 10:27 pm
BCN
-
BOI
22h 27m
2 stops
$803Multiple Airlines
Sun, Oct 18 - Sat, Oct 24
United Airlines Logo
6:32 am - 2:20 pm
BOI
-
BCN
23h 48m
1 stop
United Airlines Logo
3:15 pm - 10:58 pm
BCN
-
BOI
15h 43m
1 stop
$819United Airlines
Booking Insights

KAYAK's insights & trends for Boise to Barcelona flights

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

How much is a round-trip flight from Boise to Barcelona-El Prat Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Boise to Barcelona-El Prat Airport departing in October.

What is the cheapest month to fly from Boise to Barcelona-El Prat Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boise to Barcelona-El Prat Airport, 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 Barcelona-El Prat Airport is February, where tickets cost $504 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $3,383 and $1,386 respectively.

Good to know

Low seasonJanuary
Cheapest flight$357
Best time to beat the crowds with an average 43% drop in price.
Most popular time to fly and prices are also 27% lower on average.
Flight from Boise to Barcelona

When to book flights from Boise to Barcelona

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

  • What is the cheapest flight from Boise to Barcelona-El Prat Airport?

    In the last 5 days, the lowest price for a flight from Boise to Barcelona-El Prat Airport was $357 for a one-way ticket and $699 for a round-trip.

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

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

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

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

  • Which airline alliances offer flights from Boise to Barcelona?

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

  • Which is the best airline for flights from Boise to Barcelona, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Boise to Barcelona are Delta and United Airlines. With an average price for the route of $1,044 and an overall rating of 7.8, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $855 and an overall rating of 7.4.

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

    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 Barcelona.

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

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

    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 Barcelona with an airline and back to Boise with another airline. Booking your flights between Boise and BCN 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 Barcelona?

    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 Barcelona 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 4 airlines serving from Boise to Barcelona

 
See real verified KAYAK customer reviews for airlines flying from Boise to Barcelona. 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 Barcelona? 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.
7.8
DeltaOverall score based on 8455 reviews
7.8Comfort
7.8Entertainment
8.5Crew
8.1Boarding
7.2Food
Airline reviews

It was as good as it could be. Flying is not a pleasant experience these days.

8.0 ExcellentMark, Jun 2026
LAX - ORD
Read more Delta reviews

It was as good as it could be. Flying is not a pleasant experience these days.

The plane was old and thus the seats were not good. No cushion left whatsoever, and it all was a bit worn out.

This flight was a first class choice and left much to be desired. Seat backs on seats were falling apart and torn. Seats actually didn't come to a "full & upright position". Pull out table was sprung. Not any significant leg room. All in all we were on an obviously older plane and felt overcharged for what we received as first class.

I'm a tall guy and even the seats with more leg room were not as comfortable as I had hoped.

Overall, aside from the baggage issue, it was as good as one expects.

My husband is very tall and we generally fly Delta Comfort. We used our companion benefit, and our seats were coach and extremely uncomfortable........ horrid even

I specifically picked out right side aisle seats because my left knee sometimes needs to be stretched. But my experience this trip was that the seats were shuffled and I lost those assigned seats, resulting in me having to sit in a much less desirable position for my comfort.

Other airlines were canceling flights but Delta got us home. Crew was friendly and professional. It would have been nice to have had a little more notice about the delays because we had already arrived at the airport when the first of several delays were communicated but I understand that storm forecasting isn’t simple and we were grateful that Delta didn’t just cancel the flight.

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

On time departure and early arrival. Kind and professional service from flight crew

Great staff. Clean plane, but we were delayed for more than an hour due to maintenance issues and had to board another plane.

I was very disappointed with my experience at the United Airlines baggage check. The representative was rude and unhelpful. I was required to remove approximately 1.5 pounds from my two checked bags, even though it was a very small amount over the limit. The interaction was unnecessarily unpleasant, and I expected much better customer service. I hope United will review this incident and provide additional customer service training to its staff.

Read the fine print. This was my flight home. I booked my flight for the quickest way home. Had a carry-on and a personal item. Same as my outbound flight. Apparently I needed to pre-pay extra for my carry-on. When I checked in, I was told that I had to check it. I said I’ll pay for it, and was told that this wasn’t an option anymore. They said I still had to pay $50 to check my carry-on. I told them I’ll pay whatever to just carry it in as intended. I was not allowed, so eventually I paid $50 to check my carry-on under a plane that was half full, with overhead compartments that were even less full. My white carry-on suitcase was practically destroyed getting from Idaho falls to Denver to Orange County. The low price air fair was a bait and switch. Got me to the gate, made me pay extra, then didn’t even allow me to pay for a carry on. Not to mention that I paid the $8 for WiFi that didn’t work. All to get my suitcase destroyed. I don’t think I’m going to even keep my Untied mileage plus membership and card. Apparently, membership does not have its privileges for this one.

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

During landing. 2 crew members passed 3 times by my lane and didn't notice that people in front of us had their site to the furthermore reclined... That was uncomfortable and could have been dangerous.

The best airline I have ever travel , really good customer service, attention and service !!

United Airlines was fantastic, however, UnderPricer was a nightmare. I got to the airport 4 hours before my flight. We are moving to New Zealand so had quite a bit of baggage (16 checked items) and so wanted to have plenty of time to get everything taken care of properly. When I went to check in they (United) could only find a ticket for me. The 5 tickets for my children were never officially ticketed. I called Underpricer and they told me it was United's fault and United told me that Underpricer just needs to reissue the tickets, but they refused to. I asked the Underpricer agent to transfer me to his supervisor as I was not getting the help I needed. He told me the supervisor was busy but that he would call me back in 30 minutes. 30 minutes came and went with no phone call. After an hour I called Underpricer back but they would not let me talk to the person I had talked to before, just told me that he was talking with the supervisor and technical support. I called again an hour later, was told the same thing. I tried again later, with only about 30 minutes until my flight was scheduled to leave (meaning I had been at the airport for more than 3 hours with my 5 children trying to get ticketed and board the flight). Also, my husband had moved to New Zealand 3 months prior, I haven't seen him in 3 months, my children hadn't seen their dad in 3 months, we were all extremely eager to get on that flight and get to New Zealand. The situation with the tickets did not get resolved until after it was too late to check our luggage and board our flight. We were devastated. My 11 year old son was in tears at not being able to be on his way to see his dad. Thankfully we were rebooked for the next evening, but that night it felt devastating. We'd been at the airport for 4 hours waiting. My in-laws waited with me and then helped me reload all our baggage and took us home to stay with them for the night. On the newly booked flights we could not sit together - my children were spread throughout the plane. So, even though I had paid extra to select our seats after buying my seats from Underpricer only two of us were able to sit together (thankful that my 11 year old wasn't all by himself, but not happy that my 14 & 16 year old daughters were seated by strangers). I really feel that Underpricer should refund me what I paid for the seating ($120 USD). It was a very frustrating situation and I plan on never using Kayak or Underpricer ever again.

I flew Delta last week and United Airlines is a poor substitute mechanical problems with the plane and shitty food among other things made my travel experience what’s become to be expected from United no way is it ever worth the money they make us pay

No in flight entertainment, gate employees were very quick and impatient, plane was uncomfortable

One the best cabin crew team we have ever had (I have flown globally for more than 2 million miles), food was good and wines choices were great.⁰

Staff was very attentive! Food was good for premium economy airplane food. Clearly an older plane - seat back had to be pulled up manually after being reclined.

Everything ok, but it was a lot of turbulence during the flight.

There was a terrible delay upon arrival in Barcelona. The plane had to park a great distance from the terminal, and only one bus was available to make the ~15 minutes each way trip, meaning it was ~ 45 minutes after we landed that I finally entered the terminal.

Arrived at our connection to find out all 4 of our seats were moved in different parts of the aircraft. Traveling with two small children, this was not going to work. We spoke with the gate attendant and she was not helpful and downright rude. They could only “accommodate” having 2 seats together and this was an international flight. We will not be traveling with air Canada again unless there are absolutely no other options.

Checked bag- one should be free for overseas flights. Seats were extremely uncomfortable. Will probably not fly Canada Air again.

Our flight was cancelled half hour before boarding. We then had to spend hours on the phone to get a much longer re-route through Munich with an extra 10 hours of trip time. It caused us to miss a full day of long awaited vacation. We are extremely disappointed.

Long fight… The staff is very friendly and the meal provided was nice.

The flight crew was extremely accommodating, finding a place for my guitar. Thank you so much! Departure time, however it was delayed almost an hour because the plane was not at our gate on time. We did make up most of that timing flight, however, but it is always annoying to be delayed for that length of time. I was looking forward to the, but, honestly, it was really bad. Overall, however, my first experience with Canada was really good and I would recommend you. Thx.

Il faisait chaud. Il y avait pas de tv. On m'a changé mon siège et je n' ai pas été encore remboursé. On m'a mis à côté porte d'urgence donc je ne pouvais pas mettre bagage au sol face à mon siège

Terribly inconvenient to not have WiFi for the entire 8hr flight. Sitting in business class, we were surprised the bread was served cold, not room temp, cold. They used to be served so that they seemed freshly baked. Same can be said for the squashes croissant at breakfast. Both were squashed flat. There was no champagne on the flight. And, bring back beverage service prior to take off!!!! Our departure was delayed for over 30 minutes so no beverages really stood out as something missing. Crew, seats, entertainment choices, all excellent!

The flight was operated by level, who had a sister’s check in procedure (2 hours) due to understaffing and a computer malfunction. While 3 agents stood at the business check in, with a total of maybe one actual customer there at a time, a huge line formed at economy check in with only 1 agent staffing the check in. Then, my luggage was lost - a guitar case with contents inside valued at 3,000 USD. The computer system of LEVEL could not locate my bag and had no record of it, and IBERIA (with whom I purchased my ticket and the checked bag) refused to help. It was a disastrous experience and I will never book Iberia again

The flight was canceled on a Thursday last minute. I lost thousands of dollars in hotels and car rental

Excellent lie flat seat for premium economy! Great staff. Bad food . Not so great entertainment. My bag didn’t make it either.

Suddenly, I don't find my flight back on the app Help Ticket 0757345716866 Hoeflich Flight back Sunday ib5333 Ib2629 Ib4268

They cancelled the flight)(they said bad weather but many other flights took off) and made us wait 5 hours in line to figure out what to do. We ended up making a new flight the next day on another airlines...I hope they honor giving us our money back

We travelled with Level, which is a subsidiary of Iberia. They mixed up all our seats, downgraded few from premium economy fo economy. The crew were not professional, they seem to be in a rush! Also some with an attitude

Everything OK , except the plane left more than an hour late so I couldn’t participate in an excursion I had that morning in Brcelona

No WIFI for the flight When told the breakfast item was cheese and tomato, did not mention sun dried tomotoes - totally different flavor and not what I wanted. Flyer for items for sale but none were offered.

Awful!! Flight from Miami was delayed. Therefore we missed connecting flight. Nobody knows where our suitcases are for 2 days already !!! As far as the air craft: TVs are not working, food ala cart and even that looked awful. Did dare to taste. If you want a blanket - bring your own. Nothing is free.

I was told international flights are very nice however this one was not. We were so cramped in our seats that it was very uncomfortable. The attendants catered to the passengers that preordered their food and seemed 'put out' when we wanted to order something. We ordered a croissant sandwich and got a bagel sandwich. My husband ordered a coffee and never got it. We were so thirsty and had to go looking for someone to get some water. The food was horrible. The bathroom was filthy. The movie selection was not good.

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

Information on your arrival and departure airports