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$371+ 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 3/1. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — MAD
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
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 December 18, 2025.

This Expedia deal was found by Cheapflights users on 12/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:00 amBOI - MAD
1 stop18h 25mMultiple Airlines
Tue 1/61:15 pmMAD - BOI
2 stops29h 37mMultiple Airlines
Deal found 12/17$1,211
This Delta deal was found by Cheapflights users on 12/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:50 amBOI - BCN
2 stops27h 15mDelta
Tue 1/66:00 amBCN - BOI
2 stops25h 12mDelta
Deal found 12/17$1,246
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/215:12 pmBOI - BCN
2 stops32h 23mUnited Airlines
Mon 1/1211:55 amBCN - BOI
2 stops41h 57mUnited Airlines
Deal found 12/17$1,849
This CheapOair deal was found by Cheapflights users on 12/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2112:20 pmBOI - BCN
2 stops37h 15mMultiple Airlines
Mon 1/126:20 pmBCN - BOI
2 stops31h 47mMultiple Airlines
Deal found 12/16$1,857
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Sun 12/217:00 amBOI - BCN
2 stops18h 00mAmerican Airlines
Mon 1/1210:40 amBCN - BOI
1 stop16h 45mAmerican Airlines
Deal found 12/17$1,873
This Delta deal was found by Cheapflights users on 12/16. 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.
Sat 12/2011:47 pmBOI - BCN
2 stops24h 13mDelta
Wed 1/76:00 amBCN - BOI
2 stops23h 58mDelta
Deal found 12/16$1,884
This KLM deal was found by Cheapflights users on 12/16. 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.
Wed 12/177:45 amBOI - BCN
2 stops20h 30mMultiple Airlines
Tue 1/66:00 amBCN - BOI
2 stops19h 35mMultiple Airlines
Deal found 12/16$1,896
This Delta deal was found by Cheapflights users on 12/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2011:47 pmBOI - BCN
2 stops24h 13mDelta
Mon 12/2910:15 amBCN - BOI
2 stops31h 53mDelta
Deal found 12/17$1,948
This KLM deal was found by Cheapflights users on 12/15. 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 12/211:55 pmBOI - BCN
1 stop34h 45mKLM
Mon 1/126:00 amBCN - BOI
2 stops22h 55mKLM
Deal found 12/15$1,981
This oojo deal was found by Cheapflights users on 12/17. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:00 amBOI - MAD
1 stop18h 25mIberia
Mon 1/512:55 amMAD - BOI
1 stop20h 13mIberia
Deal found 12/17$3,137
This Air Canada deal was found by Cheapflights users on 12/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:20 amBOI - MAD
3 stops21h 45mAir Canada
Tue 1/61:35 pmMAD - BOI
3 stops31h 04mAir Canada
Deal found 12/17$3,217
This Iberia deal was found by Cheapflights users on 12/15. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:00 amBOI - AGP
2 stops25h 55mIberia
Fri 1/1611:00 pmAGP - BOI
2 stops30h 18mIberia
Deal found 12/15$3,567

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 December 18, 2025.

Round-trip from

$477
(Air France)

One-way from

$371
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,269
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. 19% potential increase in price ($247 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($45 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 18, 2025.
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

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

Sun 1/18

11:20 am-5:20 pm

2 stops22h 00m

Bilbao

Tue 1/27

6:50 am-8:55 pm

2 stops22h 05m

$477

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Thu 1/15

7:20 am-10:00 am

2 stops18h 40m

Madrid Barajas

Wed 1/28

12:55 am-2:08 pm

2 stops21h 13m

$480

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Fri 2/20

4:02 pm-4:30 pm

2 stops16h 28m

Barcelona-El Prat

Fri 2/27

10:40 am-10:36 pm

1 stop19h 56m

$481

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Mon 2/16

7:00 am-8:50 am

1 stop17h 50m

Barcelona-El Prat

Sun 2/22

10:40 am-10:36 pm

1 stop19h 56m

$484

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Fri 1/30

7:20 am-8:50 am

1 stop17h 30m

Barcelona-El Prat

Fri 2/6

10:40 am-7:25 pm

1 stop16h 45m

$484

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Mon 2/16

7:00 am-8:50 am

1 stop17h 50m

Barcelona-El Prat

Sun 2/22

10:40 am-10:36 pm

1 stop19h 56m

$484

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Mon 3/9

7:00 am-7:50 am

1 stop17h 50m

Barcelona-El Prat

Mon 3/16

10:40 am-10:36 pm

1 stop18h 56m

$484

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Fri 1/16

3:18 pm-4:55 pm

2 stops17h 37m

Madrid Barajas

Wed 1/21

12:55 am-1:08 pm

1 stop20h 13m

$485

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Tue 2/3

11:35 am-11:55 am

2 stops16h 20m

Madrid Barajas

Fri 2/27

12:55 am-12:46 pm

1 stop19h 51m

$485

BoiseValencia

BOI - VLC

BOIVLC

Boise Air Term. Gowen Fld

Sat 1/31

1:40 pm-5:55 pm

2 stops20h 15m

Valencia

Sat 2/7

6:00 am-8:55 pm

2 stops22h 55m

$486

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 50 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 $480). Flying from Boise to Spain in April is currently the most expensive (average of $790). 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 ES?

Find hourly flight availability from Boise to Spain. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 20% on flights from Boise to Spain by exploring options for tickets in the evening.

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 December 18, 2025.
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
8,005 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.1

Overall

7.9

Comfort

7.9

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
8,005 reviews
Delta
7.9
Good
8,005 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.1

Overall

7.9

Comfort

7.9

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
1,428 reviews
Delta
7.9
Good
8,005 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.1

Overall

7.9

Comfort

7.9

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
9,091 reviews
Delta
7.9
Good
8,005 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.1

Overall

7.9

Comfort

7.9

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
11,054 reviews
Delta
7.9
Good
8,005 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.1

Overall

7.9

Comfort

7.9

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
3,050 reviews
Delta
7.9
Good
8,005 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.1

Overall

7.9

Comfort

7.9

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 17h 37m. Iberia provides one of the quickest options available for as low as $485. The distance between Boise and Spain is about 5275 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 - Valencia 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 $480). Flying from Boise to Spain in April is currently the most expensive (average of $790). 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

Browse thousands of different options on Cheapflights for your next trip

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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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$493Average$761FlexibilityNo cancel feeOn-time69%
IberiaCheapest$505Average$717FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$602Average$979FlexibilityNo cancel feeOn-time71%
DeltaCheapest$617Average$990FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$637Average$972FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$651Average$865FlexibilityNo cancel feeOn-time67%
KLMCheapest$1,145Average$1,317FlexibilityNo cancel feeOn-time75%

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