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$381+ 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — MAD
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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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 October 30, 2025.

This Delta deal was found by Cheapflights users on 10/28. 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.
Sun 12/73:13 pmBOI - MAD
2 stops32h 47mDelta
Tue 12/2311:00 amMAD - BOI
2 stops44h 53mDelta
Deal found 10/28$455
This Delta deal was found by Cheapflights users on 10/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/129:00 amBOI - MAD
2 stops24h 40mDelta
Thu 11/2010:00 amMAD - BOI
2 stops22h 35mDelta
Deal found 10/30$462
This Delta deal was found by Cheapflights users on 10/27. 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 11/185:20 amBOI - MAD
2 stops18h 40mDelta
Tue 12/96:00 amMAD - BOI
2 stops26h 09mDelta
Deal found 10/27$466
This Air France deal was found by Cheapflights users on 10/30. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/121:49 pmBOI - MAD
2 stops19h 51mAir France
Wed 11/196:00 amMAD - BOI
2 stops24h 39mAir France
Deal found 10/30$481
This Iberia deal was found by Cheapflights users on 10/28. 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.
Sun 12/76:44 amBOI - MAD
1 stop15h 31mIberia
Tue 12/2312:40 pmMAD - BOI
1 stop17h 22mIberia
Deal found 10/28$489
This Delta deal was found by Cheapflights users on 10/27. 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 11/185:20 amBOI - MAD
2 stops18h 40mDelta
Mon 12/811:15 amMAD - BOI
2 stops31h 00mDelta
Deal found 10/27$493
This United Airlines deal was found by Cheapflights users on 10/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/312:45 pmBOI - BCN
1 stop16h 25mUnited Airlines
Mon 11/101:45 pmBCN - BOI
2 stops55h 40mUnited Airlines
Deal found 10/29$506
This Delta deal was found by Cheapflights users on 10/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/149:00 amBOI - MAD
2 stops22h 20mDelta
Thu 11/2010:00 amMAD - BOI
2 stops20h 25mDelta
Deal found 10/30$512
This Delta deal was found by Cheapflights users on 10/28. 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.
Sun 11/165:20 amBOI - MAD
2 stops18h 40mDelta
Sat 12/66:00 amMAD - BOI
2 stops20h 52mDelta
Deal found 10/28$517
This Delta deal was found by Cheapflights users on 10/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1312:50 pmBOI - MAD
2 stops22h 50mDelta
Thu 11/2010:00 amMAD - BOI
2 stops20h 25mDelta
Deal found 10/30$524
This Finnair deal was found by Cheapflights users on 10/30. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/81:22 pmBOI - BCN
2 stops33h 43mMultiple Airlines
Sun 11/1611:00 amBCN - BOI
2 stops33h 35mMultiple Airlines
Deal found 10/30$561
This United Airlines deal was found by Cheapflights users on 10/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/82:40 pmBOI - BCN
2 stops34h 55mUnited Airlines
Sun 11/1610:30 amBCN - BOI
2 stops35h 00mUnited Airlines
Deal found 10/29$638

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 October 30, 2025.

Round-trip from

$455
(Delta)

One-way from

$381
(Ovago)

Popular in

June

Cheapest in

November

Average price

$1,075
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. 22% potential increase in price ($294 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 October 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 October 30, 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

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Sun 12/7

3:13 pm-8:00 am

2 stops32h 47m

Madrid Barajas

Tue 12/23

11:00 am-11:53 pm

2 stops44h 53m

$455

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Wed 11/12

9:00 am-5:40 pm

2 stops24h 40m

Madrid Barajas

Thu 11/20

10:00 am-12:35 am

2 stops22h 35m

$462

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Tue 11/18

5:20 am-8:00 am

2 stops18h 40m

Madrid Barajas

Tue 12/9

6:00 am-12:09 am

2 stops26h 09m

$466

BoiseValencia

BOI - VLC

BOIVLC

Boise Air Term. Gowen Fld

Fri 2/6

5:20 am-12:00 pm

2 stops22h 40m

Valencia

Fri 2/20

9:20 pm-4:53 pm

2 stops27h 33m

$485

BoiseValencia

BOI - VLC

BOIVLC

Boise Air Term. Gowen Fld

Thu 2/5

10:38 am-12:00 pm

2 stops17h 22m

Valencia

Thu 2/19

6:00 am-11:04 pm

2 stops25h 04m

$485

BoiseValencia

BOI - VLC

BOIVLC

Boise Air Term. Gowen Fld

Tue 2/10

6:10 am-5:35 pm

2 stops27h 25m

Valencia

Tue 2/24

1:00 pm-11:32 am

2 stops30h 32m

$485

BoiseValencia

BOI - VLC

BOIVLC

Boise Air Term. Gowen Fld

Sat 2/7

7:30 am-12:00 pm

2 stops20h 30m

Valencia

Sat 2/21

6:00 am-11:42 pm

2 stops25h 42m

$485

BoiseValencia

BOI - VLC

BOIVLC

Boise Air Term. Gowen Fld

Tue 2/3

10:38 am-12:00 pm

2 stops17h 22m

Valencia

Tue 2/17

6:00 am-4:26 pm

2 stops18h 26m

$485

BoiseValencia

BOI - VLC

BOIVLC

Boise Air Term. Gowen Fld

Mon 2/9

5:20 am-12:00 pm

2 stops22h 40m

Valencia

Mon 2/23

6:00 am-11:04 pm

2 stops25h 04m

$485

BoiseValencia

BOI - VLC

BOIVLC

Boise Air Term. Gowen Fld

Sat 2/7

10:28 am-12:00 pm

3 stops17h 32m

Valencia

Sat 2/21

6:00 am-9:32 pm

3 stops23h 32m

$490

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 41 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, February is the cheapest month in which you can book a flight from Boise to Spain (average of $482). 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 October 30, 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 October 30, 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
7,998 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,998 reviews
Delta
7.9
Good
7,998 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
KLM
7.7
Good
1,406 reviews
Delta
7.9
Good
7,998 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
8,998 reviews
Delta
7.9
Good
7,998 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
American Airlines
7.2
Good
11,035 reviews
Delta
7.9
Good
7,998 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Iberia
7.0
Good
3,003 reviews
Delta
7.9
Good
7,998 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

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 40m. Delta provides one of the quickest options available for as low as $651. The distance between Boise and Spain is about 5432 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 $381 on Scandinavian Airlines. Other airlines that offer cheap prices include Air Canada from $395 and United Airlines from $583 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, February is the cheapest month in which you can book a flight from Boise to Spain (average of $482). 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

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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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$493Average$771FlexibilityNo cancel feeOn-time69%
DeltaCheapest$550Average$968FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$586Average$823FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$602Average$980FlexibilityNo cancel feeOn-time71%
FinnairCheapest$637Average$980FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$651Average$857FlexibilityNo cancel feeOn-time67%
KLMCheapest$912Average$1,317FlexibilityNo cancel feeOn-time75%

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