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$300+ 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
nov. 22 — nov. 291
sáb. 11/22
sáb. 11/29
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 octubre 23, 2025.

This Virgin Atlantic deal was found by Cheapflights users on 10/22. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/185:35 amBOI - MAD
2 stops18h 25mVirgin Atlantic
mar. 12/910:00 amMAD - BOI
2 stops22h 09mVirgin Atlantic
Deal found 10/22$443
This Delta deal was found by Cheapflights users on 10/21. 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.
mié. 10/295:45 amGEG - MAD
2 stops18h 20mDelta
vie. 11/710:00 amMAD - GEG
2 stops32h 03mDelta
Deal found 10/21$443
This Delta deal was found by Cheapflights users on 10/20. 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.
mar. 11/186:00 amBOI - MAD
2 stops18h 00mDelta
mar. 12/911:15 amMAD - BOI
1 stop33h 39mDelta
Deal found 10/20$448
This Delta deal was found by Cheapflights users on 10/22. 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.
lun. 12/17:38 pmGEG - MAD
2 stops27h 22mDelta
vie. 12/1211:15 amMAD - GEG
1 stop33h 47mDelta
Deal found 10/22$448
This United Airlines deal was found by Cheapflights users on 10/20. 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.
dom. 11/166:15 amBOI - MAD
2 stops17h 45mUnited Airlines
jue. 12/41:35 pmMAD - BOI
2 stops40h 51mUnited Airlines
Deal found 10/20$465
This Delta deal was found by Cheapflights users on 10/20. 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.
mar. 11/185:20 amBOI - MAD
2 stops18h 40mDelta
mié. 12/36:00 amMAD - BOI
2 stops24h 05mDelta
Deal found 10/20$467
This Delta deal was found by Cheapflights users on 10/20. 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.
sáb. 11/151:49 pmBOI - MAD
1 stop35h 26mDelta
mié. 12/36:00 amMAD - BOI
2 stops24h 05mDelta
Deal found 10/20$468
This Delta deal was found by Cheapflights users on 10/20. 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.
sáb. 11/151:49 pmBOI - MAD
1 stop35h 26mDelta
vie. 12/56:00 amMAD - BOI
2 stops20h 52mDelta
Deal found 10/20$469
This United Airlines deal was found by Cheapflights users on 10/20. 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.
sáb. 11/157:00 pmBOI - MAD
2 stops29h 05mUnited Airlines
jue. 12/41:35 pmMAD - BOI
2 stops41h 10mUnited Airlines
Deal found 10/20$470
This Delta deal was found by Cheapflights users on 10/23. 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.
mié. 11/1212:57 pmJAC - MAD
2 stops22h 43mDelta
mié. 11/1910:00 amMAD - JAC
2 stops19h 29mDelta
Deal found 10/23$474
This United Airlines deal was found by Cheapflights users on 10/23. 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.
mié. 12/107:00 amJAC - MAD
2 stops17h 00mUnited Airlines
jue. 12/181:35 pmMAD - JAC
2 stops28h 20mUnited Airlines
Deal found 10/23$488
This Delta deal was found by Cheapflights users on 10/21. 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.
vie. 12/55:05 amGEG - BCN
2 stops17h 55mDelta
vie. 12/1210:55 amBCN - GEG
2 stops30h 38mDelta
Deal found 10/21$488

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 octubre 23, 2025.

Round-trip from

$443
(Delta)

One-way from

$300
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$1,075
From Idaho to Spain
Search Deals
One-way flight from Idaho to Spain
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($292 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 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 octubre 23, 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

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

mar. 11/18

6:00 am-8:00 am

2 stops18h 00m

Madrid Barajas

mar. 12/9

11:15 am-10:15 am

2 stops31h 00m

$443

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

lun. 12/1

7:38 pm-8:00 am

2 stops27h 22m

Madrid Barajas

vie. 12/12

10:00 am-10:39 am

2 stops33h 39m

$443

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

dom. 11/16

6:15 am-8:00 am

2 stops17h 45m

Madrid Barajas

vie. 12/5

1:35 pm-10:45 pm

2 stops41h 10m

$465

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

dom. 11/16

6:15 am-8:00 am

2 stops17h 45m

Madrid Barajas

jue. 12/4

1:35 pm-10:26 pm

2 stops40h 51m

$465

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

lun. 11/17

5:00 am-11:00 am

2 stops22h 00m

Madrid Barajas

jue. 12/4

1:35 pm-10:45 pm

2 stops41h 10m

$465

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

mar. 11/18

5:20 am-8:00 am

2 stops18h 40m

Madrid Barajas

mié. 12/3

6:00 am-10:05 pm

2 stops24h 05m

$467

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

dom. 11/16

11:35 pm-9:15 am

1 stop25h 40m

Madrid Barajas

mié. 12/3

6:00 am-10:05 pm

2 stops24h 05m

$468

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

dom. 11/16

1:49 pm-9:15 am

1 stop35h 26m

Madrid Barajas

vie. 12/5

6:00 am-4:02 pm

2 stops18h 02m

$469

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

sáb. 11/15

1:49 pm-9:15 am

1 stop35h 26m

Madrid Barajas

vie. 12/5

6:00 am-6:52 pm

2 stops20h 52m

$469

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

sáb. 11/15

7:00 pm-8:05 am

2 stops29h 05m

Madrid Barajas

jue. 12/4

1:35 pm-10:45 pm

2 stops41h 10m

$470

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/21

Showing 1-10 of 49 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 octubre 23, 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 9% 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 45m. Delta provides one of the quickest options available for as low as $465. 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, 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 octubre 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$493Average$773FlexibilityNo cancel feeOn-time69%
DeltaCheapest$550Average$972FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$586Average$823FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$602Average$962FlexibilityNo cancel feeOn-time71%
FinnairCheapest$637Average$980FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$651Average$857FlexibilityNo cancel feeOn-time67%
KLMCheapest$890Average$1,317FlexibilityNo cancel feeOn-time75%

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