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$322+ Cheap flights from Boise (BOI) to Barcelona

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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — BCN
ago. 5 — ago. 121
mar. 8/5
mar. 8/12
1 adult, Economy
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Cheap flight deals from Boise to Barcelona

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Barcelona (S37). 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 julio 31, 2025.

Round-trip from

$566
(Booking.com)

One-way from

$495
(United Airlines)

Popular in

June

Cheapest in

February

Average price

$1,342
From Boise Air Term. Gowen Fld to Barcelona
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One-way flight from Boise Air Term. Gowen Fld to Barcelona
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Highest demand for flights based on searches. 26% potential increase in price ($355 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($60 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Boise to Barcelona

Cheapest flights from Boise to Barcelona
Explore the most affordable flight options available from Boise to Barcelona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 31, 2025.

This Booking.com deal was found by Cheapflights users on 7/29. 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.
mar. 9/302:44 pmBOI - BCN
2 stops33h 06mAir Canada
mar. 10/71:15 pmBCN - BOI
2 stops40h 09mAir Canada
Deal found 7/29$566
This American Airlines deal was found by Cheapflights users on 7/29. 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.
dom. 9/211:37 pmBOI - BCN
1 stop36h 33mAmerican Airlines
mar. 10/712:20 pmBCN - BOI
1 stop18h 02mAmerican Airlines
Deal found 7/29$571
This United Airlines deal was found by Cheapflights users on 7/30. 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.
mar. 10/79:45 amBOI - BCN
2 stops20h 20mUnited Airlines
vie. 10/2412:10 pmBCN - BOI
2 stops39h 05mUnited Airlines
Deal found 7/30$580
This American Airlines deal was found by Cheapflights users on 7/29. 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.
dom. 9/217:00 amBOI - BCN
1 stop19h 10mMultiple Airlines
mar. 10/712:20 pmBCN - BOI
2 stops18h 55mMultiple Airlines
Deal found 7/29$585
This Trip.com deal was found by Cheapflights users on 7/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/307:00 amBOI - BCN
1 stop19h 10mIberia
mar. 10/712:20 pmBCN - BOI
1 stop18h 02mIberia
Deal found 7/29$595
This Finnair deal was found by Cheapflights users on 7/29. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/131:10 pmBOI - BCN
1 stop13h 20mFinnair
jue. 8/2112:20 pmBCN - BOI
1 stop17h 20mFinnair
Deal found 7/29$726

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boise to Barcelona 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 julio 31, 2025.
Use the filters below to find and compare flights from Boise to Barcelona that are best for you.

Fly from

Boise

Fly to

Barcelona

Route

Depart

Return

Price

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

mar. 9/30

2:44 pm-7:50 am

2 stops33h 06m

Barcelona-El Prat

mar. 10/7

1:15 pm-9:24 pm

2 stops40h 09m

$566

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

dom. 9/21

1:37 pm-10:10 am

1 stop36h 33m

Barcelona-El Prat

mar. 10/7

12:20 pm-10:22 pm

1 stop18h 02m

$571

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

mar. 10/7

9:45 am-2:05 pm

2 stops20h 20m

Barcelona-El Prat

vie. 10/24

12:10 pm-7:15 pm

2 stops39h 05m

$580

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

dom. 9/21

7:00 am-10:10 am

1 stop19h 10m

Barcelona-El Prat

mar. 10/7

12:20 pm-11:15 pm

2 stops18h 55m

$585

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

mar. 9/30

7:00 am-10:10 am

1 stop19h 10m

Barcelona-El Prat

mar. 10/7

12:20 pm-10:22 pm

1 stop18h 02m

$595

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

mié. 8/13

1:10 pm-10:30 am

1 stop13h 20m

Barcelona-El Prat

jue. 8/21

12:20 pm-9:40 pm

1 stop17h 20m

$726

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

jue. 12/4

9:00 am-1:20 pm

2 stops20h 20m

$322

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

dom. 1/11

7:32 am-8:50 am

1 stop17h 18m

$468

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

mié. 12/31

5:00 am-9:00 am

2 stops20h 00m

$474

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

mié. 9/17

2:45 pm-7:50 am

2 stops33h 05m

$518

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 16 results
1
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Best time to book a flight from Boise to Barcelona

Have a flexible travel schedule? Discover the best time to fly to Barcelona 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

What is the cheapest month to book a flight from Boise to Barcelona?

Currently, January is the cheapest month in which you can book a flight from Boise to Barcelona (average of $523). Flying from Boise to Barcelona in June is currently the most expensive (average of $1,057). 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.

What is the cheapest time of day to fly from BOI to BCN?

Find hourly flight availability from Boise to Barcelona. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated julio 31, 2025.

A simple way to save on the total cost of your ticket is to fly from Boise to Barcelona in the evening. If you’re flexible enough to do this you can expect to save up to 17% on your trip compared to booking a flight in the morning.

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

Reviews of airlines servicing Barcelona

Get insights into the airlines that provide service to Barcelona. 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. Reviews last updated julio 31, 2025.
Read through reviews of airlines operating flights from Boise to Barcelona, such as Finnair, Air France, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,316 reviews

Comfort

7.5

Boarding

7.6

Food

6.7

Crew

8.1

Overall

7.6

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Daniel,May 2025

HEL - ARN

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.
Finnair
7.6
Good
1,316 reviews
Finnair
7.6
Good
1,316 reviews

Comfort

7.5

Boarding

7.6

Food

6.7

Crew

8.1

Overall

7.6

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Daniel,May 2025

HEL - ARN

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.
Air France
7.5
Good
1,465 reviews
Finnair
7.6
Good
1,316 reviews

Comfort

7.5

Boarding

7.6

Food

6.7

Crew

8.1

Overall

7.6

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Daniel,May 2025

HEL - ARN

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.
United Airlines
7.4
Good
8,900 reviews
Finnair
7.6
Good
1,316 reviews

Comfort

7.5

Boarding

7.6

Food

6.7

Crew

8.1

Overall

7.6

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Daniel,May 2025

HEL - ARN

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.
American Airlines
7.2
Good
10,000 reviews
Finnair
7.6
Good
1,316 reviews

Comfort

7.5

Boarding

7.6

Food

6.7

Crew

8.1

Overall

7.6

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Daniel,May 2025

HEL - ARN

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.
Air Canada
7.1
Good
9,851 reviews
Finnair
7.6
Good
1,316 reviews

Comfort

7.5

Boarding

7.6

Food

6.7

Crew

8.1

Overall

7.6

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Daniel,May 2025

HEL - ARN

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.

Related info for your journey

Find useful and relevant information for your journey from Boise to Barcelona. 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?

    Most people fly from Boise Air Term. Gowen Fld (BOI) if they book a flight from Boise to Barcelona. On average, Air Term. Gowen Fld has 0 outbound flights to Barcelona per day from 4 airlines. Boise Air Term. Gowen Fld is conveniently located just 3.3 mi from Boise’s city center.

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

    Flying on Air Canada is currently your cheapest option to Barcelona, with prices starting at $566. Additional round-trip tickets that might be worth considering are offered by American Airlines and United Airlines, with the lowest prices starting at $571 and $580, respectively. Air Canada is currently priced 43% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Boise to Barcelona one-way?

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $495. However, be on the lookout for offers from Air Canada and Air France, as they are both options that can get you from Boise to Barcelona for a low price.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boise to Barcelona 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?

    Currently, January is the cheapest month in which you can book a flight from Boise to Barcelona (average of $523). Flying from Boise to Barcelona in June is currently the most expensive (average of $1,057). 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

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Alternative routes for Boise to Barcelona

See prices for flight routes from nearby airports that may be better suited for you.
Boise to Barcelona-El Prat flights
Spokane to Barcelona-El Prat flights
Jackson to Barcelona-El Prat flights
Idaho Falls to Barcelona-El Prat flights

Top 4 airlines flying from Boise to Barcelona

Discover the top 4 airlines that operate flights from Boise to Barcelona. 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 julio 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$570Average$902FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$586Average$986FlexibilityNo cancel feeOn-time69%
FinnairCheapest$637Average$972FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$641Average$1,041FlexibilityNo cancel feeOn-time71%

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