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$399+ 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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — MAD
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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Find 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 November 13, 2025.

This Delta deal was found by Cheapflights users on 11/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/125:00 amGEG - BCN
2 stops18h 00mDelta
Wed 11/1910:15 amBCN - GEG
2 stops33h 24mDelta
Deal found 11/12$438
This Delta deal was found by Cheapflights users on 11/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/127:00 amJAC - MAD
2 stops28h 40mDelta
Wed 11/1910:00 amMAD - JAC
2 stops19h 29mDelta
Deal found 11/12$474
This Delta deal was found by Cheapflights users on 11/10. 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 11/187:30 amBOI - MAD
2 stops20h 00mDelta
Tue 12/96:00 amMAD - BOI
2 stops26h 09mDelta
Deal found 11/10$480
This United Airlines deal was found by Cheapflights users on 11/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1211:25 amGEG - BCN
1 stop16h 45mUnited Airlines
Wed 11/199:55 amBCN - GEG
2 stops22h 34mUnited Airlines
Deal found 11/12$486
This United Airlines deal was found by Cheapflights users on 11/13. 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 12/107:00 amJAC - MAD
2 stops17h 00mUnited Airlines
Thu 12/181:35 pmMAD - JAC
2 stops28h 20mUnited Airlines
Deal found 11/13$488
This KLM deal was found by Cheapflights users on 11/12. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/136:00 amGEG - BCN
2 stops17h 00mKLM
Thu 11/2010:15 amBCN - GEG
2 stops21h 10mKLM
Deal found 11/12$488
This Cheapflightsfares deal was found by Cheapflights users on 11/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1812:45 pmBOI - MAD
2 stops26h 50mLufthansa
Tue 12/97:25 amMAD - BOI
2 stops18h 42mLufthansa
Deal found 11/12$489
This Finnair deal was found by Cheapflights users on 11/11. 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
Mon 12/812:55 amMAD - BOI
1 stop19h 32mMultiple Airlines
Deal found 11/11$493
This Delta deal was found by Cheapflights users on 11/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/277:00 amJAC - MAD
2 stops17h 00mDelta
Fri 12/510:00 amMAD - JAC
2 stops19h 29mDelta
Deal found 11/13$493
This Delta deal was found by Cheapflights users on 11/11. 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 11/1811:10 amBOI - MAD
2 stops16h 20mDelta
Mon 12/811:15 amMAD - BOI
2 stops31h 00mDelta
Deal found 11/11$511
This Air Canada deal was found by Cheapflights users on 11/12. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/186:15 amBOI - MAD
2 stops17h 45mAir Canada
Mon 12/81:35 pmMAD - BOI
2 stops41h 10mAir Canada
Deal found 11/12$515
This Delta deal was found by Cheapflights users on 11/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/287:00 amJAC - MAD
2 stops17h 00mDelta
Thu 12/46:00 amMAD - JAC
2 stops23h 29mDelta
Deal found 11/12$516

Cheap flight deals from Idaho to Spain

Keep the following information in mind while searching for Idaho to Spain flight deals. Data was last updated November 13, 2025.

Round-trip from

$463
(Delta)

One-way from

$399
(United Airlines)

Popular in

June

Cheapest in

November

Average price

$631
From Idaho to Spain
Search Deals
One-way flight from Idaho to Spain
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($266 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($43 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 13, 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

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Fri 2/20

5:40 am-8:00 am

2 stops18h 20m

Barcelona-El Prat

Fri 2/27

10:55 am-9:56 am

2 stops31h 01m

$463

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sat 1/24

6:15 pm-8:00 am

2 stops29h 45m

Barcelona-El Prat

Mon 2/2

10:15 am-9:57 am

2 stops31h 42m

$474

JacksonMadrid

JAC - MAD

JACMAD

Jackson Hole

Fri 1/16

12:58 pm-4:05 pm

2 stops19h 07m

Madrid Barajas

Tue 1/20

10:00 am-12:00 pm

2 stops34h 00m

$482

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

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sat 1/24

7:20 am-8:50 am

1 stop17h 30m

Barcelona-El Prat

Mon 2/2

10:40 am-7:25 pm

1 stop16h 45m

$484

JacksonMadrid

JAC - MAD

JACMAD

Jackson Hole

Wed 12/10

7:00 am-8:00 am

2 stops17h 00m

Madrid Barajas

Thu 12/18

1:35 pm-9:55 am

2 stops28h 20m

$488

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Tue 2/17

7:00 am-9:15 am

2 stops17h 15m

Madrid Barajas

Tue 2/24

6:00 am-9:17 pm

2 stops24h 17m

$491

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Sun 1/11

7:20 am-9:25 am

1 stop18h 05m

Madrid Barajas

Fri 1/23

4:25 pm-1:08 pm

2 stops28h 43m

$493

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Fri 1/9

6:00 am-8:50 am

2 stops17h 50m

Madrid Barajas

Fri 1/23

12:55 am-2:09 pm

2 stops22h 14m

$493

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Fri 1/9

5:00 am-9:15 am

2 stops19h 15m

Madrid Barajas

Sat 1/24

11:15 am-10:44 am

2 stops32h 29m

$493

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/13

Showing 1-10 of 54 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, February is the cheapest month in which you can book a flight from Idaho to Spain (average of $482). 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.

What is the cheapest time of day to fly from ID to ES?

Find hourly flight availability from Idaho 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 November 13, 2025.

When flying from Idaho to Spain, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 8% versus a flight in the afternoon.

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. Delta provides one of the quickest options available for as low as $488. There are 5070 mi between Idaho and Spain. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Idaho to Spain one-way?

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $399. Users have also found prices from $562 and $637 on Lufthansa and KLM, respectively.

  • 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, February is the cheapest month in which you can book a flight from Idaho to Spain (average of $482). 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

Browse thousands of different options on Cheapflights for your next trip

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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.
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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 November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$493Average$771FlexibilityNo cancel feeOn-time69%
DeltaCheapest$550Average$968FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$586Average$801FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$602Average$965FlexibilityNo 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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