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$244+ Cheap flights from Boise (BOI) to Spain

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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — MAD
Mar 11 — Mar 181
Wed 3/11
Wed 3/18
1 adult, Economy
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Cheap flight deals from Boise to Spain

Cheapest flights from Boise to Spain
Explore the most affordable flight options available from Boise to Spain. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 9, 2026.

This United Airlines deal was found by Cheapflights users on 2/6. 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 3/96:55 pm
BOI
-
BCN
2 stops30h 25m
United Airlines
Mon 3/1612:35 pm
BCN
-
BOI
2 stops41h 21m
United Airlines
Deal found 2/6$471
This United Airlines deal was found by Cheapflights users on 2/7. 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 4/147:03 pm
BOI
-
BCN
2 stops28h 57m
United Airlines
Wed 4/291:15 pm
BCN
-
BOI
2 stops40h 02m
United Airlines
Deal found 2/7$475
This United Airlines deal was found by Cheapflights users on 2/8. 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 4/125:29 pm
BOI
-
BCN
2 stops20h 56m
United Airlines
Wed 4/221:15 pm
BCN
-
BOI
2 stops40h 07m
United Airlines
Deal found 2/8$479
This Cheapflightsfares deal was found by Cheapflights users on 2/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/92:40 pm
BOI
-
MAD
2 stops20h 10m
Lufthansa
Tue 3/177:25 am
MAD
-
BOI
2 stops21h 04m
Lufthansa
Deal found 2/8$482
This American Airlines deal was found by Cheapflights users on 2/8. 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.
Sun 4/126:26 pm
BOI
-
BCN
2 stops17h 54m
American Airlines
Wed 4/2210:45 am
BCN
-
BOI
1 stop20h 09m
American Airlines
Deal found 2/8$483
This KAYAK deal was found by Cheapflights users on 2/6. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/121:40 pm
BOI
-
BCN
1 stop15h 10m
Multiple Airlines
Wed 4/2211:00 am
BCN
-
BOI
1 stop19h 28m
Multiple Airlines
Deal found 2/6$486
This KLM deal was found by Cheapflights users on 2/8. 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 4/121:40 pm
BOI
-
BCN
1 stop15h 10m
KLM
Wed 4/2211:00 am
BCN
-
BOI
1 stop19h 28m
KLM
Deal found 2/8$487
This Booking.com deal was found by Cheapflights users on 2/7. 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.
Tue 4/145:00 am
BOI
-
MAD
2 stops17h 50m
Air Canada
Wed 4/2912:45 pm
MAD
-
BOI
2 stops40h 32m
Air Canada
Deal found 2/7$489
This Delta deal was found by Cheapflights users on 2/7. 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.
Tue 4/141:52 pm
BOI
-
BCN
2 stops19h 18m
Delta
Wed 4/2911:00 am
BCN
-
BOI
1 stop19h 28m
Delta
Deal found 2/7$491
This Iberia deal was found by Cheapflights users on 2/8. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/141:53 pm
BOI
-
MAD
1 stop16h 32m
Iberia
Tue 4/281:00 pm
MAD
-
BOI
1 stop16h 07m
Iberia
Deal found 2/8$491
This Cheapflightsfares deal was found by Cheapflights users on 2/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/102:40 pm
BOI
-
BCN
2 stops20h 05m
Lufthansa
Tue 3/177:40 am
BCN
-
BOI
2 stops20h 49m
Lufthansa
Deal found 2/8$493
This American Airlines deal was found by Cheapflights users on 2/8. 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.
Tue 4/141:29 pm
BOI
-
MAD
2 stops18h 21m
American Airlines
Tue 4/283:55 pm
MAD
-
BOI
1 stop28h 56m
American Airlines
Deal found 2/8$493

Find flight deals from Boise to Spain

Keep the following information in mind while searching for Boise to Spain flight deals. Data was last updated February 9, 2026.

Round-trip from

$471
(United Airlines)

One-way from

$244
(United Airlines)

Popular in

June

Cheapest in

February

Average price

$484
From Boise Air Term. Gowen Fld to Spain
Search Deals
One-way flight from Boise Air Term. Gowen Fld to Spain
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($280 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($49 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boise to Spain 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 February 9, 2026.
Use the filters below to find and compare flights from Boise to Spain that are best for you.

Fly from

Boise

Fly to

Spain

Route

Depart

Return

Price

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Mon 3/9

6:55 pm-8:20 am

2 stops30h 25m

Barcelona-El Prat

Mon 3/16

12:35 pm-10:56 pm

2 stops41h 21m

$471

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Tue 4/14

7:03 pm-8:00 am

2 stops28h 57m

Barcelona-El Prat

Wed 4/29

1:15 pm-9:17 pm

2 stops40h 02m

$475

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sun 4/12

2:37 pm-8:20 am

2 stops33h 43m

Barcelona-El Prat

Wed 4/22

1:15 pm-9:22 pm

2 stops40h 07m

$481

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sun 4/12

1:40 pm-12:50 pm

1 stop15h 10m

Barcelona-El Prat

Wed 4/22

11:00 am-10:28 pm

1 stop19h 28m

$487

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Fri 3/6

12:59 pm-7:50 pm

2 stops22h 51m

Barcelona-El Prat

Mon 3/16

12:35 pm-12:13 pm

2 stops30h 38m

$487

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Wed 3/11

10:49 am-4:20 pm

2 stops22h 31m

Barcelona-El Prat

Mon 3/16

12:35 pm-12:13 pm

2 stops30h 38m

$487

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sun 3/8

10:49 am-7:50 pm

2 stops26h 01m

Barcelona-El Prat

Mon 3/16

12:35 pm-12:13 pm

2 stops30h 38m

$487

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Tue 4/14

5:00 am-6:50 am

2 stops17h 50m

Madrid Barajas

Wed 4/29

12:45 pm-9:17 pm

2 stops40h 32m

$489

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Tue 4/14

1:52 pm-5:10 pm

2 stops19h 18m

Barcelona-El Prat

Wed 4/29

11:00 am-10:28 pm

1 stop19h 28m

$491

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Tue 4/14

1:53 pm-2:25 pm

1 stop16h 32m

Madrid Barajas

Tue 4/28

1:00 pm-9:07 pm

1 stop16h 07m

$491

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/6

Showing 1-10 of 56 results
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Best time to book a flight from Boise to Spain

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

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

Currently, March is the cheapest month in which you can book a flight from Boise to Spain (average of $475). Flying from Boise to Spain in June is currently the most expensive (average of $776). 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.

Reviews of airlines servicing Spain

Get insights into the airlines that provide service to Spain. 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 Spain. Reviews last updated February 9, 2026.
Read reviews from past customers who have flown Delta, KLM, and United Airlines from Boise to Spain. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,174 reviews

Overall

7.9

Entertainment

7.8

Comfort

7.9

Food

7.2

Boarding

8.1

Crew

8.5

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
8,174 reviews
Delta
7.9
Good
8,174 reviews

Overall

7.9

Entertainment

7.8

Comfort

7.9

Food

7.2

Boarding

8.1

Crew

8.5

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.
KLM
7.7
Good
1,450 reviews
Delta
7.9
Good
8,174 reviews

Overall

7.9

Entertainment

7.8

Comfort

7.9

Food

7.2

Boarding

8.1

Crew

8.5

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
9,259 reviews
Delta
7.9
Good
8,174 reviews

Overall

7.9

Entertainment

7.8

Comfort

7.9

Food

7.2

Boarding

8.1

Crew

8.5

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
7.2
Good
11,255 reviews
Delta
7.9
Good
8,174 reviews

Overall

7.9

Entertainment

7.8

Comfort

7.9

Food

7.2

Boarding

8.1

Crew

8.5

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
3,110 reviews
Delta
7.9
Good
8,174 reviews

Overall

7.9

Entertainment

7.8

Comfort

7.9

Food

7.2

Boarding

8.1

Crew

8.5

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 Spain. 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 Spain?

    Most people fly from Boise Air Term. Gowen Fld (BOI) if they book a flight from Boise to Spain. Boise Air Term. Gowen Fld is conveniently located just 3.3 mi from Boise’s city center.

  • How long is the flight from Boise to Spain?

    A quick flight from Boise to Spain can take about 15h 10m. United Airlines provides one of the quickest options available for as low as $487. The distance between Boise and Spain is about 5431 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Boise to Spain?

    When deciding which route to take from Boise to Spain consider Boise Air Term. Gowen Fld - Barcelona-El Prat, Boise Air Term. Gowen Fld - Madrid Barajas or Boise Air Term. Gowen Fld - Malaga as they are the most popular.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boise to Spain 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 Spain?

    Currently, March is the cheapest month in which you can book a flight from Boise to Spain (average of $475). Flying from Boise to Spain in June is currently the most expensive (average of $776). 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 Spain

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Boise to Spain

Discover the top 7 airlines that operate flights from Boise to Spain. 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 February 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$483Average$668FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$493Average$730FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$541Average$957FlexibilityNo cancel feeOn-time71%
DeltaCheapest$550Average$941FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$637Average$856FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$651Average$857FlexibilityNo cancel feeOn-time67%
KLMCheapest$1,145Average$1,317FlexibilityNo cancel feeOn-time75%

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