Spain

$260+ Cheap flights from Idaho 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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — MAD
Jan 27 — Feb 31
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Cheap flight deals from Idaho to Spain

Cheapest flights from Idaho to Spain
Explore the most affordable flight options available from Idaho to Spain. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 28, 2025.

This Iberia deal was found by Cheapflights users on 12/26. 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 12/287:00 amBOI - BCN
2 stops27h 10mIberia
Tue 12/309:15 pmBCN - BOI
2 stops32h 47mIberia
Deal found 12/26$1,598
This Kiwi.com deal was found by Cheapflights users on 12/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2812:38 pmBOI - BCN
2 stops21h 07mMultiple Airlines
Tue 12/302:00 pmBCN - BOI
1 stop31h 28mMultiple Airlines
Deal found 12/26$2,400
This FlightHub deal was found by Cheapflights users on 12/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/286:15 amBOI - BCN
3 stops20h 30mAir Canada
Tue 12/301:35 pmBCN - BOI
3 stops31h 07mAir Canada
Deal found 12/26$4,128
This Expedia deal was found by Cheapflights users on 12/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:15 amBOI - MAD
2 stops25h 35mMultiple Airlines
Sun 1/48:35 pmMAD - BOI
2 stops33h 30mMultiple Airlines
Deal found 12/27$9,297
This AranGrant deal was found by Cheapflights users on 12/27. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:00 amBOI - MAD
1 stop15h 15mIberia
Sun 1/41:00 pmMAD - BOI
2 stops31h 37mIberia
Deal found 12/27$9,448
This AranGrant deal was found by Cheapflights users on 12/27. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:00 amBOI - MAD
1 stop18h 25mFinnair
Sun 1/412:40 pmMAD - BOI
1 stop17h 25mFinnair
Deal found 12/27$10,105
This KAYAK deal was found by Cheapflights users on 12/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/283:45 pmBOI - MAD
2 stops19h 25mBritish Airways
Sat 1/39:05 amMAD - BOI
2 stops20h 05mBritish Airways
Deal found 12/27$15,122
This KAYAK deal was found by Cheapflights users on 12/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/283:45 pmBOI - MAD
2 stops18h 40mMultiple Airlines
Sat 1/312:40 pmMAD - BOI
1 stop17h 22mMultiple Airlines
Deal found 12/27$15,308
This AranGrant deal was found by Cheapflights users on 12/27. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/287:00 amBOI - MAD
1 stop18h 25mFinnair
Sat 1/312:40 pmMAD - BOI
1 stop17h 22mFinnair
Deal found 12/27$16,150

Find flight deals from Idaho to Spain

Keep the following information in mind while searching for Idaho to Spain flight deals. Data was last updated December 28, 2025.

Round-trip from

$468
(United Airlines)

One-way from

$260
(KLM)

Popular in

June

Cheapest in

February

Average price

$1,269
From Idaho to Spain
One-way flight from Idaho to Spain
Highest demand for flights based on searches. 19% potential increase in price ($248 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($45 potential savings vs. average RT price).
Average for round-trip flights in December 2025

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho 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 28, 2025.
Use the filters below to find and compare flights from Idaho to Spain that are best for you.

Fly from

Idaho

Fly to

Spain

Route

Depart

Return

Price

SpokaneBarcelona

GEG - BCN

GEGBCN

Spokane

Tue 2/10

1:48 pm-9:35 am

2 stops34h 47m

Barcelona-El Prat

Tue 2/17

1:35 pm-6:16 pm

2 stops37h 41m

$468

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Wed 3/4

6:25 am-8:00 am

2 stops17h 35m

Madrid Barajas

Mon 3/9

12:40 pm-10:56 pm

2 stops41h 16m

$473

SpokaneBarcelona

GEG - BCN

GEGBCN

Spokane

Mon 2/2

6:53 am-5:35 pm

2 stops25h 42m

Barcelona-El Prat

Sun 2/8

5:50 am-7:16 pm

2 stops22h 26m

$476

BoiseMálaga

BOI - AGP

BOIAGP

Boise Air Term. Gowen Fld

Mon 1/26

1:47 pm-11:40 pm

2 stops25h 53m

Malaga

Mon 2/2

8:25 pm-4:17 pm

2 stops27h 52m

$478

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sat 1/24

3:21 pm-4:05 pm

2 stops16h 44m

Barcelona-El Prat

Sat 1/31

10:40 am-7:25 pm

1 stop16h 45m

$481

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Thu 2/19

7:00 am-11:25 am

2 stops20h 25m

Barcelona-El Prat

Wed 2/25

10:40 am-10:36 pm

1 stop19h 56m

$481

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Fri 2/20

11:54 am-11:35 am

2 stops15h 41m

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

Fri 2/20

7:00 am-8:50 am

1 stop17h 50m

Barcelona-El Prat

Fri 2/27

10:40 am-10:36 pm

1 stop19h 56m

$484

SpokaneBarcelona

GEG - BCN

GEGBCN

Spokane

Mon 2/2

6:00 am-8:50 am

1 stop17h 50m

Barcelona-El Prat

Sun 2/8

10:40 am-6:49 pm

1 stop17h 09m

$484

JacksonBarcelona

JAC - BCN

JACBCN

Jackson Hole

Sun 1/25

3:51 pm-8:05 pm

2 stops20h 14m

Barcelona-El Prat

Sun 2/1

12:30 pm-1:02 pm

2 stops32h 32m

$485

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/26

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

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

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

Currently, March is the cheapest month in which you can book a flight from Idaho to Spain (average of $480). Flying from Idaho 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.

Related info for your journey

Find useful and relevant information for your journey from Idaho to Spain. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • How long is the flight from Idaho to Spain?

    A quick flight from Idaho to Spain can take about 17h 35m. United Airlines provides one of the quickest options available for as low as $473. There are 5275 mi between Idaho and Spain. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Idaho to Spain (average of $480). Flying from Idaho 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 Idaho to Spain

See prices for flight routes from nearby airports that may be better suited for you.

Top 7 airlines flying from Idaho to Spain

Discover the top 7 airlines that operate flights from Idaho 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 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$493Average$760FlexibilityNo cancel feeOn-time69%
IberiaCheapest$505Average$717FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$602Average$917FlexibilityNo 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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