BOI - BCN

$399 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 4/18. 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.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boise to Barcelona.
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Everything you should know

Cheapest round-trip
$465
Typical prices: $483-$638
American Airlines
Fri 2/20Fri 2/27
BOI - BCN • 2 stops
Cheapest one-way
$399
United Airlines
Sat 4/18
BOI - BCN • 2 stops
Top airlines
American Airlines
Cheapest • from $465 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 45% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 49% 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
American Airlines Logo
6:38 am - 9:00 am
BOI
-
BCN
18h 22m
2 stops
American Airlines Logo
12:30 pm - 11:38 pm
BCN
-
BOI
19h 08m
2 stops
$465American Airlines
Sat, Apr 18 - Thu, Apr 30
Air Canada Logo
2:37 pm - 9:20 am
BOI
-
BCN
34h 43m
2 stops
Air Canada Logo
12:15 pm - 7:11 pm
BCN
-
BOI
38h 56m
2 stops
$473Air Canada
Tue, Apr 14 - Tue, Apr 21
Iberia Logo
6:44 am - 7:35 am
BOI
-
BCN
16h 51m
1 stop
Iberia Logo
10:45 am - 9:07 pm
BCN
-
BOI
18h 22m
1 stop
$485Iberia
Sun, Feb 22 - Sun, Mar 1
United Airlines Logo
7:11 am - 9:35 am
BOI
-
BCN
42h 24m
2 stops
United Airlines Logo
5:30 pm - 11:17 am
BCN
-
BOI
25h 47m
1 stop
$488United Airlines
Fri, Feb 20 - Fri, Feb 27
Delta Logo
5:50 am - 8:00 am
BOI
-
BCN
18h 10m
2 stops
Delta Logo
10:55 am - 9:50 am
BCN
-
BOI
30h 55m
2 stops
$490Delta
Sun, Feb 22 - Sun, Mar 1
United Airlines Logo
7:11 am - 9:35 am
BOI
-
BCN
42h 24m
2 stops
United Airlines Logo
6:50 am - 11:17 am
BCN
-
BOI
36h 27m
2 stops
$492United Airlines
Tue, Apr 14 - Tue, Apr 21
United Airlines Logo
5:29 pm - 10:25 pm
BOI
-
BCN
20h 56m
2 stops
United Airlines Logo
3:15 pm - 10:57 pm
BCN
-
BOI
15h 42m
1 stop
$493United Airlines
Mon, Mar 9 - Mon, Mar 16
United Airlines Logo
6:55 pm - 8:20 am
BOI
-
BCN
30h 25m
2 stops
United Airlines Logo
9:55 am - 12:13 pm
BCN
-
BOI
33h 18m
2 stops
$494United Airlines
Tue, Mar 3 - Sun, Mar 8
United Airlines Logo
5:00 am - 8:20 am
BOI
-
BCN
19h 20m
2 stops
United Airlines Logo
10:30 am - 9:29 pm
BCN
-
BOI
41h 59m
2 stops
$495United Airlines
Sun, Apr 19 - Thu, Apr 30
Delta Logo
11:36 pm - 12:50 pm
BOI
-
BCN
29h 14m
1 stop
Delta Logo
6:20 am - 1:16 pm
BCN
-
BOI
38h 56m
2 stops
$496Delta
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 February.

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 January, where the average cost of round-trip tickets is $1,501 and $1,292 respectively.

How far in advance should I book a flight from Boise to Barcelona-El Prat Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure 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 average of all the values for each week.

To get a below average price on the flight from Boise to Barcelona-El Prat Airport, you should book around 2 weeks before departure, which saves you about 45% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Good to know

Low seasonDecember
Cheapest flight$399
Best time to beat the crowds but there is an average 27% increase in price.
Most popular time to fly and prices are also 18% 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 $399 for a one-way ticket and $465 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 $892 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 $927 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 8113 reviews
7.9Comfort
7.2Food
8.5Crew
7.8Entertainment
8.1Boarding
Airline reviews

was sitting in the jet bridge for 10 minutes in -20 degree weather waiting for my bag

2.0 MediocreAndrea, Jan 2026
CMH - MSP
Read more Delta reviews

was sitting in the jet bridge for 10 minutes in -20 degree weather waiting for my bag

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.

Very good seat, very comfortable, good food, and good service.

It was a good flight, very comfortable seats for sleeping in business class. Probably the most comfortable business class seat I've ever had (20+ times in business class on various airlines). Service was good, but the only downside is my screen didn't work and it had to be reset multiple times to get it to shut off. I had to block my eyes because the screen was white almost the entire flight and I wore an eye mask when I slept. But when eating and reading in my seat, my eyes hurt because the only way to turn the screen off was reset it and the screen would only be off for a few minutes at a time.

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.

Flight arrived 30 min early and bag was waiting at the baggage pickup. United Club HNL was one of the nicest in the system

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.

one crew said "he" didn't serve double alcohol drinks for travelers in exit rows. crew on prior flight did. Is this a AA rule, and the prior crew was being nice? Also, I think we deserve more than a 25% refund for losing first class seats when rescheduling a flight due to weather

It was a little concerning to hear the ground crew arguing with the flight crew over baggage space. Instead of taking them and checking them, they started checking for space in the first class cabin moving items around like the flight crew didn't know what they were doing. I was embarrassed for them.

2 hour delay due to equipment failure. No updates via the app and airport screens (which continued to show a departure time in the past). AA eventually switched planes and the new plane was not catered or cleaned correctly.

I booked an aisle seat and was given a middle. At 6'4" 230lbs, it is not ideal to fly in the middle row for myself and passengers.

Trip delayed for 2 hours because of rain. We boarded and have to get down the flight and reboard again.

The aircraft had several problems - from excess fuel to non operational ac. Two hours of delay in Chicago could have been avoided with proper planning and aircraft maintenance.

This flight captain and crew were amazing, started ahead of time of departure and reached 30 mins before arrival time. Amazing!

Long delays, lack of information about the status of the flight. The flight was delayed 4 times.

Could we please end the loud announcements about credit card offers on your flights? We are trying to sleep, work, watch videos, etc. and if we need a credit card, we will ask for one. Flying is already not what it used to be.

I would like the crew to talk LESS over the PA and specifically about credit card offers. I am trying to work, sleep, watch a movie and the PA was booming about a credit card offer. Could we go back to the days when the customer was more important than selling a credit card?

I waiting for 2 hrs to retrieve my luggage. Didn't get home till 3am.

The flight left late and I didn’t get a glass of bubbly upon boarding (which I’m used to when booking business class on other flights), but otherwise it was a pleasant flight with lovely, helpful crew members and I enjoyed my meal.

Flight cancellations, delays, mass confusion and disorganization! That’s Air Canada for you, nothing new. I would have chosen a different airline if it were an option, and Air Canada continues to prove they don’t care about their customers.

everything was fine. but paying for 1 piece of check-in luggage and denying passengers to board with carry-on luggage which by air line's standards does not fit is not acceptable. when one travels for a longer time one needs to have some essentials

Couldn't fit knees, only 1 toilet working, didn't get anything to drink cause the stewards were not able to get to us

Flight was canceled for a reason they knew hours before but did not mention. Next the gate chnage from 37 to 38 at least 10 times. Ridiculous.

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.

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

Information on your arrival and departure airports