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$530+ Cheap flights from Boise (BOI) to Spain

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — MAD
Oct 14 — Oct 211
Tue 10/14
Tue 10/21
1 adult, Economy
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Cheap flight deals from Boise to Spain

Keep the following information in mind while searching for Boise to Spain flight deals. Data was last updated September 14, 2025.

Round-trip from

$543
(CheapOair)

Popular in

June

Cheapest in

February

Average price

$1,009
From Boise Air Term. Gowen Fld to Spain
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($342 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($58 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find 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 September 14, 2025.

This Air Canada deal was found by Cheapflights users on 9/13. 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.
Sun 9/215:00 amBOI - BCN
2 stops18h 50mAir Canada
Tue 10/712:10 pmBCN - BOI
2 stops39h 05mAir Canada
Deal found 9/13$530
This Air Canada deal was found by Cheapflights users on 9/13. 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 9/227:09 pmBOI - MAD
2 stops27h 31mAir Canada
Tue 10/712:45 pmMAD - BOI
2 stops36h 13mAir Canada
Deal found 9/13$534
This Air Canada deal was found by Cheapflights users on 9/13. 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 9/225:39 pmBOI - BCN
2 stops30h 11mAir Canada
Tue 10/712:10 pmBCN - BOI
2 stops43h 34mAir Canada
Deal found 9/13$535
This Air Canada deal was found by Cheapflights users on 9/13. 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.
Tue 9/235:00 amBOI - BCN
2 stops20h 20mAir Canada
Tue 10/712:10 pmBCN - BOI
2 stops43h 34mAir Canada
Deal found 9/13$536
This CheapOair deal was found by Cheapflights users on 9/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/127:00 amBOI - BCN
2 stops42h 20mAir Canada
Fri 10/241:15 pmBCN - BOI
2 stops41h 15mAir Canada
Deal found 9/14$543
This United Airlines deal was found by Cheapflights users on 9/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/239:52 amBOI - BCN
1 stop20h 08mUnited Airlines
Tue 10/74:00 pmBCN - BOI
1 stop15h 44mUnited Airlines
Deal found 9/13$553
This United Airlines deal was found by Cheapflights users on 9/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/245:00 amBOI - BCN
2 stops19h 20mUnited Airlines
Thu 10/911:15 amBCN - BOI
2 stops30h 27mUnited Airlines
Deal found 9/13$557
This Iberia deal was found by Cheapflights users on 9/12. 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 11/187:00 amBOI - MAD
1 stop15h 15mIberia
Tue 12/912:40 pmMAD - BOI
1 stop17h 45mIberia
Deal found 9/12$557
This United Airlines deal was found by Cheapflights users on 9/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/227:09 pmBOI - BCN
1 stop34h 51mUnited Airlines
Tue 10/74:00 pmBCN - BOI
1 stop15h 44mUnited Airlines
Deal found 9/13$558
This United Airlines deal was found by Cheapflights users on 9/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/215:00 amBOI - BCN
2 stops20h 20mUnited Airlines
Tue 10/74:00 pmBCN - BOI
1 stop15h 44mUnited Airlines
Deal found 9/13$559
This Finnair deal was found by Cheapflights users on 9/13. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/187:00 amBOI - MAD
2 stops17h 50mMultiple Airlines
Tue 12/912:40 pmMAD - BOI
1 stop17h 45mMultiple Airlines
Deal found 9/13$562
This United Airlines deal was found by Cheapflights users on 9/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/227:09 pmBOI - BCN
1 stop34h 51mUnited Airlines
Thu 10/911:15 amBCN - BOI
2 stops30h 27mUnited Airlines
Deal found 9/13$563

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 September 14, 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

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sun 10/12

7:00 am-9:20 am

2 stops42h 20m

Barcelona-El Prat

Fri 10/24

1:15 pm-10:30 pm

2 stops41h 15m

$543

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Wed 9/24

7:45 am-2:00 pm

1 stop22h 15m

Barcelona-El Prat

Tue 10/7

11:15 am-11:44 pm

2 stops20h 29m

$557

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sun 1/25

5:40 am-8:00 am

2 stops18h 20m

Barcelona-El Prat

Tue 2/3

10:15 am-12:21 am

2 stops22h 06m

$557

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sun 1/25

7:32 am-1:20 pm

2 stops21h 48m

Barcelona-El Prat

Tue 2/3

10:40 am-9:18 pm

1 stop18h 38m

$557

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Tue 11/18

6:37 am-8:50 am

2 stops18h 13m

Madrid Barajas

Mon 12/8

12:55 am-12:20 pm

2 stops19h 25m

$562

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Tue 11/18

5:35 am-8:00 am

2 stops18h 25m

Madrid Barajas

Tue 12/9

10:00 am-12:43 am

2 stops22h 43m

$562

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Tue 11/18

7:00 am-8:50 am

2 stops17h 50m

Madrid Barajas

Tue 12/9

12:40 pm-10:25 pm

1 stop17h 45m

$562

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Mon 10/6

9:45 am-2:00 pm

1 stop20h 15m

Barcelona-El Prat

Wed 10/15

3:15 pm-9:24 pm

2 stops38h 09m

$568

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Mon 11/24

8:17 am-1:10 pm

1 stop20h 53m

Barcelona-El Prat

Tue 12/2

6:45 am-11:44 pm

2 stops24h 59m

$570

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

Wed 11/5

10:40 am-11:05 pm

2 stops28h 25m

Bilbao

Fri 11/14

12:50 pm-1:44 pm

3 stops32h 54m

$576

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 40 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, November is the cheapest month in which you can book a flight from Boise to Spain (average of $543). Flying from Boise to Spain in June is currently the most expensive (average of $1,054). 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 September 14, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Boise to Spain as you normally would.

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 September 14, 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
8.0
Very good
7,956 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

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
7,956 reviews
Delta
8.0
Very good
7,956 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

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!
KLM
7.8
Good
1,385 reviews
Delta
8.0
Very good
7,956 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

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
8,931 reviews
Delta
8.0
Very good
7,956 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

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
7,956 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

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
2,928 reviews
Delta
8.0
Very good
7,956 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

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 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 18h 20m. Air Canada provides one of the quickest options available for as low as $557. 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 cheapest airlines to fly from Boise to Spain one-way?

    One-way options have recently been found by users for as low as $569 on United Airlines. Other airlines that offer cheap prices include American Airlines from $806 and Air Canada from $1,336 one-way.

  • 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 - Bilbao 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, November is the cheapest month in which you can book a flight from Boise to Spain (average of $543). Flying from Boise to Spain in June is currently the most expensive (average of $1,054). 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 6 airlines flying from Boise to Spain

Discover the top 6 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 September 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$564Average$776FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$570Average$784FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$591Average$987FlexibilityNo cancel feeOn-time71%
DeltaCheapest$617Average$1,051FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$637Average$980FlexibilityNo cancel feeOn-time76%
KLMCheapest$664Average$1,317FlexibilityNo cancel feeOn-time75%

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