BOI - BCN

$402 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 4/5. 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.
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
$481
Overall average: $559
Multiple Airlines
Fri 2/20Fri 2/27
BOI - BCN • 2 stops
Cheapest one-way
$402
Iberia
Sun 4/5
BOI - BCN • 2 stops
When to travel
February
Cheapest • 44% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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

Fri, Feb 20 - Fri, Feb 27
Multiple Airlines Logo
4:02 pm - 4:30 pm
BOI
-
BCN
16h 28m2 stops
Multiple Airlines Logo
10:40 am - 10:36 pm
BCN
-
BOI
19h 56m1 stop
$481Multiple Airlines
Thu, Feb 5 - Thu, Feb 12
Air Canada Logo
2:37 pm - 9:35 am
BOI
-
BCN
34h 58m2 stops
Air Canada Logo
1:35 pm - 10:12 am
BCN
-
BOI
28h 37m2 stops
$482Air Canada
Fri, Feb 20 - Fri, Feb 27
Multiple Airlines Logo
7:00 am - 8:50 am
BOI
-
BCN
17h 50m1 stop
Multiple Airlines Logo
10:40 am - 10:36 pm
BCN
-
BOI
19h 56m1 stop
$484Multiple Airlines
Fri, Feb 13 - Sun, Feb 15
Multiple Airlines Logo
7:00 am - 1:05 pm
BOI
-
BCN
22h 05m2 stops
Multiple Airlines Logo
3:05 pm - 12:46 pm
BCN
-
BOI
29h 41m2 stops
$489Multiple Airlines
Fri, Feb 20 - Fri, Feb 27
United Airlines Logo
5:00 am - 9:35 am
BOI
-
BCN
20h 35m2 stops
United Airlines Logo
6:50 am - 11:38 pm
BCN
-
BOI
24h 48m2 stops
$491United Airlines
Mon, Mar 9 - Mon, Mar 16
Delta Logo
12:45 pm - 3:00 pm
BOI
-
BCN
19h 15m2 stops
Delta Logo
9:45 am - 12:53 pm
BCN
-
BOI
34h 08m1 stop
$493Delta
Mon, Mar 9 - Mon, Mar 16
Delta Logo
11:30 pm - 7:40 am
BOI
-
BCN
25h 10m1 stop
Delta Logo
9:15 am - 9:55 am
BCN
-
BOI
31h 40m2 stops
$494Delta
Thu, Feb 5 - Thu, Feb 12
Multiple Airlines Logo
7:20 am - 8:50 am
BOI
-
BCN
17h 30m1 stop
Multiple Airlines Logo
11:00 am - 12:46 pm
BCN
-
BOI
33h 46m2 stops
$499Multiple Airlines
Thu, Feb 12 - Sun, Feb 15
Multiple Airlines Logo
8:20 am - 8:50 am
BOI
-
BCN
16h 30m2 stops
Multiple Airlines Logo
6:40 am - 7:42 pm
BCN
-
BOI
21h 02m2 stops
$504Multiple Airlines
Mon, Feb 16 - Sun, Feb 22
United Airlines Logo
6:25 am - 4:20 pm
BOI
-
BCN
25h 55m2 stops
United Airlines Logo
10:30 am - 10:12 am
BCN
-
BOI
31h 42m2 stops
$509United 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.

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

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

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

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 $559 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,501 and $1,299 respectively.

Good to know

Low seasonDecember
Cheapest flight$402
Best time to beat the crowds but there is an average 26% increase in price.
Most popular time to fly and prices are also 19% 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 3 days, the lowest price for a flight from Boise to Barcelona-El Prat Airport was $402 for a one-way ticket and $481 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?

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

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

    The two airlines most popular with KAYAK users for flights from Boise to Barcelona are Delta and Finnair. With an average price for the route of $954 and an overall rating of 7.9, Delta is the most popular choice. Finnair is also a great choice for the route, with an average price of $972 and an overall rating of 7.6.

  • 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 5 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.
7.9
DeltaOverall score based on 8015 reviews
8.1Boarding
8.5Crew
7.9Entertainment
7.9Comfort
7.3Food
Airline reviews

The plant way delayed departing by 3 hours. It was an old airplane with broken seats and armrests. The bathroom made a hollering sound. A really crappy flight experience and travel day all around.

2.0 MediocrePeter, Dec 2025
JFK - MEM
Read more Delta reviews

The plant way delayed departing by 3 hours. It was an old airplane with broken seats and armrests. The bathroom made a hollering sound. A really crappy flight experience and travel day all around.

Flight delays both to Detroits and return flight . The flight to Detroit was associated with mechanical difficulty

I am extremely disappointed that delta internal pilot manuals now refer to the Gulf of Mexico as the “gulf of America”. You can bow down to the Orange turd on your own. I will never fly delta again

Wasn't a Delta issue I don't think, but seems there was a Delta flight at each of the 2 Dallas airports at the same exact time, both to Atlanta. I was evidently booked on the one at Love Airport, but the Carey transport shuttle took me to DFW instead and I ended up missing the flight by just a few minutes. Was able to book a Southwest flight from Love Airport, but was a big loss of time and an inconvenience.

Great. I had to modify a flight. That was easy and free. Thank You

I noticed that the planes seem to be outdated. There was no entertainment per se. Also, the waiting area did not have any working electrical outlets

None of the airplane features were available during the flight.

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

The food is terrible. The staff is wonderful. Comfort is good.

Everything was wonderful! AirBus seats are more comfortable to sleep in as compared to the Boeing planes.

All reviews good because...flight from BWI to London ,economy seats was miserable. I usually book 1,step up from economy but this would have added 1500 bucks 1 way. Bit the bullet and upgraded for retun flight, otherwise all ratings would have been rock bottom.

Great. It was awesome to have boarding from the front and back of the plane as it made the process go very quickly

Wish that everyone would board the back of the plane first. Also let kids on first. The gate wasn’t open at arrival and we waited 45 minutes to takeoff. They made up for time in the air.

This was an absolutely exceptional flight. The flight attendants were extremely attentive and very friendly. They seemed to go out of their way to make us comfortable and to make sure that we had everything we needed., We were in business and were very happy with the size and the details for our pods. We would definitely recommend Finnair and will definitely be flying with them again.

We had an excellent trip with Finnair. This was our first time and we’re very pleased. The only issue was with the boarding - it was a little bit confusing and needs a little bit of streamlining.

Crew very lovely. Arrived an hour late due to bad weather. We were given new tickets to an other flight but it could have been organised better, so we did not have to run through the whole airport to.

Flight delayed over an hour. They said they would hold our connection but then did not.

Major problems checking in at Alaska counter. They could not find our booking code because it came from Finnair.

Do not use KAYAK or Finair for future travel. Unless you purchase the tickets directly from the airline, you were going to have a difficult time checking in. Kayak canceled my flights twice and ended up causing great difficulty in me getting back from Europe because they double sold my tickets between American Airlines and Finair. The event caused significant delays and led to me having to rebook my flights.

Gate agent at Frankfurt was terrible. She denied PRE boarding even as it was printed on the boarding pass. Refused to look at the boarding pass and literally shouting for no reason. Frankfurt airport has horrible and rude staff who avoids trying to answer any question at all. Overall, horrible experience.

The Crew and the food was the worst I ever had in Business Class. First they told us there were no space for carry on. It was plenty of space over our 2 row seats, we had to ask to let us travel with it which was accepted. They were aware that we had to run for the connection due to the previous flight delay. Have us one hour waiting for more customers and not even offer a glass of water. Then started the service and they started to serve other passengers drinks in business and did not offer any drinks until they serve our pre ordered meal and I ask for something to drink. I had to wait until they finished to serve all passengers until Inget something. The crew was the worts I ever had for Business Class in my life.

Very turbulent trip made it pretty bearable, plus the lack of refreshments served and the lack of any air conditioning before takeoff which took an hour or more.

Flight was late - I was downgraded from first class to coach

Not good - outbound flight was delayed and missed my connection even though I got to the gate after running through the airport - the agent would not let me on because the door was closed (flight had not left). There was no notification from United - overall experience was very disappointing. Additionally, I was downgraded from first class to coach on the alternative flight

The flight was on time. I generally don’t drink or eat on short flights and the seats were good and the flight attendants were friendly. That’s all I expect

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

United overall experience is great these days. Airport experience was very organized. Staff on flight were great. App and information as good as it gets.

United have really come back. Airport and boarding process is clear and good, app and information also very good

The boarding by groups is pointless. The first two groups worked fine, but almost Noone boarded in goups three thru five leaving the vast majority boarding when group six was called. It defeated the purpose of spreading out the crowd.

I don’t know who decides what food to serve on these flights but I would be so embarrassed if I served this to anyone and call it food…

For whatever reason, the flight was not catered -we were told it would be a 45 minute delay waiting for catering - so no food. There were opened candy and peanuts in the seatback pocket. Flight landed early in DFW but due to the assigned gate not being available, we sat on the ground for 30 minutes waiting for the gate to open - making the flight actually arrive at the gate late.

Not great. Booked Extra seats and got nothing extra at all. It’s basically a big budget airline.

The pilot greased the landing and the crew was fantastic.

I bought wifi and most of the flight could not even use it my apps would just spin. I couldn't even listen to music. super frustrating.

delayed due to weather. Could not communicate with family since the wifi was broken

Experience was good, however I had a delay due to weather happening and had to re purchase a seat on a new plane for a higher price (could be my own issue and misunderstanding) but other than that situation. First time flyer (by myself) was terrific!! The last from ORD to ALO didn't have wifi, but it was only 45 minutes so I'm sure that was part of the reason. Overall my experience was great! Next time I will remember to buy tickets with longer layovers. The delays really saved my overall anxiety. :)

Flight was delayed 17 hours due to aircraft issues. American did provide hotel, transportation and meals, 3 hours past boarding time, but it took us another hour to get the vouchers.

Flight was on time is the only good thing. Person loading the plane called 1-6 to board at the same time, made it chaotic. Plane was too small for even putting backpacks in overhead. Seat for normal sized people were too small. The WIFI didn't work. When we landed had to wait because not enough ground crew.

The flight from SFO to YVR was delayed and my bag did not make it to my next flight from YVR to SYD. It took almost 3 days after I landed to get my bag and when I got it, it was filled with dust

Our biggest complaint about Air Canada is that if you don’t like your seat during check-in, there’s a fee to move elsewhere. On our flight from YUL to FFL, we were charged to change seats—just regular seats. What’s maddening is that the plane wasn’t even full; there were even a few people sleeping in the middle row sections (entire rows, completely empty), using them as beds. In my opinion, charging passengers for seat changes is a cash grab by Air Canada. They are definitely not the airline they were back in the day. I suppose they need to gouge the consumer now that they pay their attendants while on ground. One out of 10.

Nothing specific. Cabin temperature was too high for some reason.

It was just fine. I managed to make all my connection too sbut had trouble in Munich with no wheel chair and trouble trying to get help from the airport people to get to the other terminal for my flight. Finally a wonderful lady Amelia, helped me to make my flight connection Timon with zero time to spare.

Over 40 years ago my AC return flight was canceled, during this last summer the same thing happened. AC denied everything Canadian like paying for accommodations and basic necessities. So why would I ever want to fly AC again? This last flight my wife took the return flight had problems and left late, so I guess they are getting better. However I have no faith in this airline so I drove to this last destination! I'll never fly AC again!!!

Great check in process in LA and good service The check in process as well as at the gate is way better in the US versus canada 🇨🇦

Super experience. Earlier than schedule departure and arrival. Baggage handling was very good

Allow me to book extra bag check in as free though I packed in 1 luggage but that was 7 LBS overweight so make another bag to free check in.

I would like to get my money back. I flight was 4 hours late on the way to detroit, And same on my way back to Brussels they cancelled my flight and give me an other ticket and i had to wait 5 hours.

All attendents were very efficient, pleasant and happy. Everything went smoothly. The seats could have been wider. There could have been more free food instead of just one small bar.

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

Information on your arrival and departure airports