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Barcelona-El Prat

$357+ Cheap flights from Boise (BOI) to Barcelona-El Prat (BCN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — BCN
May 22 — May 291
Fri 5/22
Fri 5/29
1 adult, Economy
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Cheap flight deals from Boise to Barcelona-El Prat

Cheapest flights from Boise to Barcelona-El Prat
Explore the most affordable flight options available from Boise to Barcelona-El Prat. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2026.

This Expedia deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/206:44 am
BOI
-
BCN
1 stop19h 26m
Iberia
Tue 10/139:30 pm
BCN
-
BOI
2 stops31h 35m
Iberia
Deal found 4/21$785
This Booking.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/206:30 am
BOI
-
BCN
2 stops18h 50m
Air Canada
Tue 10/1312:15 pm
BCN
-
BOI
2 stops41h 16m
Air Canada
Deal found 4/21$792
This United Airlines deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/218:15 am
BOI
-
BCN
1 stop22h 05m
United Airlines
Fri 10/23:15 pm
BCN
-
BOI
1 stop15h 51m
United Airlines
Deal found 4/22$804
This United Airlines deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/207:01 pm
BOI
-
BCN
1 stop35h 19m
United Airlines
Fri 10/23:15 pm
BCN
-
BOI
1 stop15h 51m
United Airlines
Deal found 4/22$809
This United Airlines deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/75:22 pm
BOI
-
BCN
2 stops32h 13m
United Airlines
Tue 11/173:05 pm
BCN
-
BOI
1 stop16h 01m
United Airlines
Deal found 4/21$813
This United Airlines deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:01 pm
BOI
-
BCN
1 stop35h 19m
United Airlines
Tue 10/63:15 pm
BCN
-
BOI
2 stops32h 16m
United Airlines
Deal found 4/22$814
This FlightHub deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/76:55 pm
BOI
-
BCN
2 stops30h 40m
Multiple Airlines
Tue 11/176:50 am
BCN
-
BOI
2 stops24h 16m
Multiple Airlines
Deal found 4/18$817
This American Airlines deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:00 am
BOI
-
BCN
1 stop17h 50m
American Airlines
Tue 11/1710:40 am
BCN
-
BOI
1 stop19h 23m
American Airlines
Deal found 4/18$820
This American Airlines deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/31:18 pm
BOI
-
BCN
2 stops18h 22m
Multiple Airlines
Fri 10/912:20 pm
BCN
-
BOI
2 stops18h 27m
Multiple Airlines
Deal found 4/17$821
This United Airlines deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/912:29 pm
BOI
-
BCN
1 stop16h 41m
United Airlines
Fri 11/133:05 pm
BCN
-
BOI
1 stop16h 01m
United Airlines
Deal found 4/18$824

Find flight deals from Boise to Barcelona-El Prat

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Barcelona-El Prat (BCN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 22, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$785
(Expedia)

One-way from

$357
(American Airlines)

Popular in

June

Cheapest in

February

Average price

$814
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Barcelona-El Prat flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Barcelona-El Prat flights.
Search Deals
From Boise Air Term. Gowen Fld to Barcelona-El Prat
Search Deals
One-way flight from Boise Air Term. Gowen Fld to Barcelona-El Prat
Search Deals
Highest demand for flights based on searches. 29% potential increase in price ($403 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($70 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boise to Barcelona-El Prat that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 22, 2026.
Use the filters below to find and compare flights from Boise to Barcelona-El Prat Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sun 8/9

5:20 pm-8:20 pm

2 stops19h 00m

Barcelona-El Prat

Thu 8/20

10:15 am-10:20 pm

2 stops20h 05m

$851
Quickest round-trip

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sat 10/3

10:23 am-11:10 am

1 stop16h 47m

Barcelona-El Prat

Fri 10/9

1:20 pm-11:52 pm

1 stop18h 32m

$884

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Thu 8/6

5:20 pm-8:35 pm

2 stops19h 15m

Barcelona-El Prat

Fri 8/21

7:40 am-10:20 pm

2 stops22h 40m

$901

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Fri 9/18

5:11 pm-8:15 pm

2 stops19h 04m

Barcelona-El Prat

Sat 10/3

7:40 am-10:17 pm

2 stops22h 37m

$918

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Thu 8/6

1:14 pm-8:05 pm

2 stops22h 51m

Barcelona-El Prat

Fri 8/21

10:45 am-10:20 pm

1 stop19h 35m

$922
Cheapest one-way

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Tue 10/13

12:10 pm-2:15 pm

2 stops18h 05m

$357
Quickest one-way

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Mon 10/12

2:21 pm-4:25 pm

2 stops18h 04m

$357

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Mon 10/12

6:44 am-10:10 am

1 stop19h 26m

$360

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Mon 10/12

8:15 am-2:20 pm

1 stop22h 05m

$387

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Tue 10/13

8:40 am-1:15 pm

1 stop20h 35m

$387

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/19

Showing 1-10 of 11 resultsSorted by cheapest first
1
2

Compare providers for flights from Boise to Barcelona-El Prat

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boise to Barcelona-El Prat in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boise-Barcelona-El Prat Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boise-Barcelona-El Prat Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boise-Barcelona-El Prat Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boise-Barcelona-El Prat Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boise-Barcelona-El Prat Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Boise to Barcelona-El Prat

Have a flexible travel schedule? Discover the best time to fly to Barcelona-El Prat from Boise with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Boise to Barcelona-El Prat Airport

What is the cheapest month to book a flight from Boise to Barcelona-El Prat Airport?

Currently, February is the cheapest month in which you can book a flight from Boise to Barcelona-El Prat Airport (average of $484). Flying from Boise to Barcelona-El Prat Airport in June is currently the most expensive (average of $1,726). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Boise to Barcelona-El Prat Airport?

Reviews of airlines servicing Barcelona-El Prat

Get insights into the airlines that provide service to Barcelona-El Prat. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Barcelona-El Prat. Reviews last updated April 22, 2026.
See what other customers who have flown with Delta,United Airlines, andAmerican Airlines from Boise to Barcelona-El Prat Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,434 reviews

Entertainment

7.8

Crew

8.5

Overall

7.9

Comfort

7.9

Boarding

8.1

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,434 reviews
Delta
7.9
Good
8,434 reviews

Entertainment

7.8

Crew

8.5

Overall

7.9

Comfort

7.9

Boarding

8.1

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,613 reviews
Delta
7.9
Good
8,434 reviews

Entertainment

7.8

Crew

8.5

Overall

7.9

Comfort

7.9

Boarding

8.1

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.1
Good
11,646 reviews
Delta
7.9
Good
8,434 reviews

Entertainment

7.8

Crew

8.5

Overall

7.9

Comfort

7.9

Boarding

8.1

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Canada
7.1
Good
10,949 reviews
Delta
7.9
Good
8,434 reviews

Entertainment

7.8

Crew

8.5

Overall

7.9

Comfort

7.9

Boarding

8.1

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Iberia
7.0
Good
3,186 reviews
Delta
7.9
Good
8,434 reviews

Entertainment

7.8

Crew

8.5

Overall

7.9

Comfort

7.9

Boarding

8.1

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Boise to Barcelona-El Prat. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Boise to Barcelona-El Prat?

    Boise Air Term. Gowen Fld (BOI), located 3.3 mi from the city center, is the airport you fly out of when you book flights from Boise to Barcelona-El Prat. 5 airlines have flights from Air Term. Gowen Fld to Barcelona-El Prat on a regular basis. Booking flights from Boise Air Term. Gowen Fld to Barcelona-El Prat should not be difficult; the airport handles an average of 0 outbound flights to Barcelona-El Prat per day.

  • How long is the flight from Boise to Barcelona-El Prat Airport?

    Airlines like KLM fly from Boise to Barcelona-El Prat Airport in about 16h 47m. The time it takes to get you to your destination can typically vary by up to . The distance from Boise to Barcelona-El Prat Airport is about 5431 mi.

  • What are the cheapest airlines flying from Boise to Barcelona-El Prat Airport round-trip?

    Currently priced at $483, Iberia will fly you from Boise to Barcelona-El Prat Airport and back. In addition to Iberia, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Delta - these airlines can fly you to your destination from $498 and $599, respectively. Iberia is priced at 49% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Boise to Barcelona-El Prat that include hotel bookings?

    Yes. In addition to deals on Boise to Barcelona-El Prat flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boise to Barcelona-El Prat?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boise to Barcelona-El Prat.

  • Can I find deals for business class flights from Boise to Barcelona-El Prat?

    Yes. Cheapflights offers flight deals from Boise to Barcelona-El Prat by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, February is the cheapest month in which you can book a flight from Boise to Barcelona-El Prat Airport (average of $484). Flying from Boise to Barcelona-El Prat Airport in June is currently the most expensive (average of $1,726). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Barcelona-El Prat Airport?

Book flights to Barcelona-El Prat Airport if you plan to visit one of these locations
Roses
Calella
L'Hospitalet de Llobregat
Cadaques
El Prat de Llobregat
Badalona
Pineda de Mar

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from Boise to Barcelona-El Prat

Discover the top 5 airlines that operate flights from Boise to Barcelona-El Prat. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 22, 2026.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$483Average$940FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$498Average$812FlexibilityNo cancel feeOn-time69%
DeltaCheapest$599Average$999FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$634Average$1,029FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$651Average$857FlexibilityNo cancel feeOn-time67%

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