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$448+ 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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — BCN
May 20 — May 271
Tue 5/20
Tue 5/27
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 May 15, 2025.

Round-trip from

$515
(United Airlines)

One-way from

$448
(Finnair)

Popular in

June

Cheapest in

February

Average price

$1,065
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. 25% potential increase in price ($342 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($57 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 15, 2025.

This United Airlines deal was found by Cheapflights users on 5/15. 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 10/1210:00 amBOI - BCN
1 stop20h 00mUnited Airlines
Wed 10/221:15 pmBCN - BOI
2 stops40h 17mUnited Airlines
Deal found 5/15$515
This American Airlines deal was found by Cheapflights users on 5/15. 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.
Wed 10/11:17 pmBOI - BCN
1 stop13h 13mAmerican Airlines
Tue 10/710:45 amBCN - BOI
2 stops18h 27mAmerican Airlines
Deal found 5/15$536
This American Airlines deal was found by Cheapflights users on 5/15. 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.
Wed 10/15:45 pmBOI - BCN
2 stops17h 00mMultiple Airlines
Tue 10/710:45 amBCN - BOI
2 stops18h 27mMultiple Airlines
Deal found 5/15$539
This Air Canada deal was found by Cheapflights users on 5/13. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/610:00 amBOI - BCN
2 stops37h 50mAir Canada
Tue 1/131:35 pmBCN - BOI
2 stops41h 31mAir Canada
Deal found 5/13$564
This Lufthansa deal was found by Cheapflights users on 5/13. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/72:42 pmBOI - BCN
2 stops24h 23mLufthansa
Thu 1/86:20 pmBCN - BOI
2 stops36h 46mLufthansa
Deal found 5/13$636
This Delta deal was found by Cheapflights users on 5/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1011:30 pmBOI - BCN
1 stop25h 50mDelta
Wed 1/1410:55 amBCN - BOI
1 stop33h 50mDelta
Deal found 5/13$748
This KLM deal was found by Cheapflights users on 5/15. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2111:30 pmBOI - BCN
1 stop25h 10mKLM
Mon 1/125:25 pmBCN - BOI
2 stops31h 28mKLM
Deal found 5/15$1,090
This Gurufare deal was found by Cheapflights users on 5/14. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/218:41 pmBOI - BCN
2 stops58h 04mIcelandair
Mon 5/263:45 pmBCN - BOI
2 stops38h 57mIcelandair
Deal found 5/14$1,220
This Ovago deal was found by Cheapflights users on 5/14. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/57:40 amBOI - BCN
2 stops31h 35mITA Airways
Sat 8/96:20 amBCN - BOI
2 stops24h 37mITA Airways
Deal found 5/14$1,269
This Priceline deal was found by Cheapflights users on 5/14. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/511:44 amBOI - BCN
1 stop14h 26mIberia
Sat 8/912:20 pmBCN - BOI
1 stop17h 23mIberia
Deal found 5/14$1,700

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 May 15, 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

Sun 10/12

10:00 am-2:00 pm

1 stop20h 00m

Barcelona-El Prat

Wed 10/22

1:15 pm-9:32 pm

2 stops40h 17m

$515

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Wed 10/1

1:17 pm-10:30 am

1 stop13h 13m

Barcelona-El Prat

Tue 10/7

10:45 am-9:12 pm

2 stops18h 27m

$536

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Wed 10/1

5:45 pm-6:45 pm

2 stops17h 00m

Barcelona-El Prat

Tue 10/7

10:45 am-9:12 pm

2 stops18h 27m

$539

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Mon 10/6

10:00 am-7:50 am

2 stops37h 50m

Barcelona-El Prat

Tue 1/13

1:35 pm-11:06 pm

2 stops41h 31m

$564

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Tue 10/7

2:42 pm-11:05 pm

2 stops24h 23m

Barcelona-El Prat

Thu 1/8

6:20 pm-11:06 pm

2 stops36h 46m

$636

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Fri 10/10

11:30 pm-9:20 am

1 stop25h 50m

Barcelona-El Prat

Wed 1/14

10:55 am-12:45 pm

1 stop33h 50m

$748

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Tue 8/5

7:40 am-11:15 pm

2 stops31h 35m

Barcelona-El Prat

Sat 8/9

6:20 am-10:57 pm

2 stops24h 37m

$1,269

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Tue 8/5

11:44 am-10:10 am

1 stop14h 26m

Barcelona-El Prat

Sat 8/9

12:20 pm-9:43 pm

1 stop17h 23m

$1,700

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Wed 9/17

7:30 am-1:35 pm

2 stops22h 05m

$448

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Wed 9/17

7:45 am-2:00 pm

1 stop22h 15m

$593

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/14

Showing 1-10 of 11 results
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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 $1,063). 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 May 15, 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.

Rainfall in Barcelona by month

Plan your trip to Barcelona by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Barcelona ranges from 0.8 - 3.6 inches per month. October is typically the wettest month, when rainfall can reach 3.6 in. July is typically the driest time to visit Barcelona when rainfall is around 0.8 in.

Temperature in Barcelona by month

Plan your trip to Barcelona by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Barcelona, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

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 May 15, 2025.
Delta
8.0
Very good
7,946 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,731 reviews
Delta
8.0
Very good
7,946 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,946 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.0
Good
9,339 reviews
Delta
8.0
Very good
7,946 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Iberia
7.0
Good
2,730 reviews
Delta
8.0
Very good
7,946 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 3 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 United Airlines is currently your cheapest option to Barcelona, with prices starting at $515. Additional round-trip tickets that might be worth considering are offered by American Airlines and Air Canada, with the lowest prices starting at $536 and $564, respectively. United Airlines is currently priced 48% below the average price you’ll pay for this route.

  • 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 $1,063). 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
Jackson to Barcelona-El Prat flights
Spokane to Barcelona-El Prat flights
Idaho Falls to Barcelona-El Prat flights

Top 3 airlines flying from Boise to Barcelona

Discover the top 3 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 May 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$570Average$902FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$636Average$992FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$684Average$1,062FlexibilityNo cancel feeOn-time71%

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