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$340+ 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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — MAD
dic. 6 — dic. 131
sáb. 12/6
sáb. 12/13
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 noviembre 6, 2025.

This Delta deal was found by Cheapflights users on 11/3. 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.
dom. 11/91:15 pmGEG - BCN
2 stops33h 45mDelta
mar. 11/256:00 amBCN - GEG
2 stops21h 58mDelta
Deal found 11/3$452
This KLM deal was found by Cheapflights users on 11/6. 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.
dom. 11/1611:35 pmGEG - BCN
1 stop24h 05mKLM
mar. 11/256:00 amBCN - GEG
2 stops21h 58mKLM
Deal found 11/6$462
This Delta deal was found by Cheapflights users on 11/4. 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.
jue. 12/45:20 amBOI - MAD
2 stops18h 40mDelta
jue. 12/1110:00 amMAD - BOI
2 stops22h 42mDelta
Deal found 11/4$468
This Delta deal was found by Cheapflights users on 11/5. 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. 11/127:00 amJAC - MAD
2 stops28h 40mDelta
mié. 11/1910:00 amMAD - JAC
2 stops19h 29mDelta
Deal found 11/5$474
This Delta deal was found by Cheapflights users on 11/5. 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.
dom. 11/95:35 amBOI - BCN
2 stops18h 25mDelta
lun. 11/2410:15 amBCN - BOI
2 stops22h 20mDelta
Deal found 11/5$475
This United Airlines deal was found by Cheapflights users on 11/6. 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. 11/166:00 amGEG - BCN
2 stops46h 10mUnited Airlines
mar. 11/251:35 pmBCN - GEG
2 stops54h 43mUnited Airlines
Deal found 11/6$476
This Delta deal was found by Cheapflights users on 11/5. 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. 11/1811:42 amBOI - MAD
2 stops15h 48mDelta
mar. 12/96:00 amMAD - BOI
2 stops26h 09mDelta
Deal found 11/5$480
This United Airlines deal was found by Cheapflights users on 11/5. 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 11/5$488
This Finnair deal was found by Cheapflights users on 11/5. 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.
mar. 11/187:00 amBOI - MAD
2 stops17h 50mMultiple Airlines
lun. 12/812:55 amMAD - BOI
1 stop19h 32mMultiple Airlines
Deal found 11/5$492
This Delta deal was found by Cheapflights users on 11/6. 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.
jue. 11/277:00 amJAC - MAD
2 stops18h 15mDelta
vie. 12/510:00 amMAD - JAC
2 stops19h 29mDelta
Deal found 11/6$492
This Finnair deal was found by Cheapflights users on 11/5. 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.
dom. 12/75:17 amGEG - MAD
1 stop15h 58mMultiple Airlines
dom. 12/1411:00 amMAD - GEG
2 stops18h 57mMultiple Airlines
Deal found 11/5$492
This United Airlines deal was found by Cheapflights users on 11/4. 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.
mar. 11/188:25 amBOI - MAD
2 stops15h 35mUnited Airlines
lun. 12/81:45 pmMAD - BOI
2 stops37h 58mUnited Airlines
Deal found 11/4$506

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 noviembre 6, 2025.

Round-trip from

$442
(Delta)

One-way from

$340
(Kiwi.com)

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 ($41 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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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 noviembre 6, 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

dom. 11/16

11:35 pm-8:40 am

1 stop24h 05m

Barcelona-El Prat

mar. 11/25

6:00 am-6:58 pm

2 stops21h 58m

$462

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

jue. 12/4

5:20 am-8:00 am

2 stops18h 40m

Madrid Barajas

jue. 12/11

10:00 am-12:42 am

2 stops22h 42m

$468

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

sáb. 1/24

6:15 pm-8:00 am

2 stops29h 45m

Barcelona-El Prat

lun. 2/2

10:15 am-9:57 am

2 stops31h 42m

$474

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

dom. 11/9

1:49 pm-8:40 am

1 stop34h 51m

Barcelona-El Prat

lun. 11/24

10:55 am-10:27 pm

1 stop19h 32m

$475

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

dom. 11/9

5:35 am-8:00 am

2 stops18h 25m

Barcelona-El Prat

lun. 11/24

10:15 am-12:35 am

2 stops22h 20m

$475

SpokaneBarcelona

GEG - BCN

GEGBCN

Spokane

dom. 11/16

6:00 am-1:10 pm

2 stops46h 10m

Barcelona-El Prat

mar. 11/25

1:35 pm-11:18 am

2 stops54h 43m

$476

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

mar. 11/18

11:42 am-11:30 am

2 stops15h 48m

Madrid Barajas

mar. 12/9

6:00 am-12:09 am

2 stops26h 09m

$480

JacksonMadrid

JAC - MAD

JACMAD

Jackson Hole

vie. 1/16

12:58 pm-4:05 pm

2 stops19h 07m

Madrid Barajas

mar. 1/20

10:00 am-12:00 pm

2 stops34h 00m

$482

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

sáb. 1/24

7:20 am-8:50 am

1 stop17h 30m

Barcelona-El Prat

lun. 2/2

10:40 am-7:25 pm

1 stop16h 45m

$484

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

sáb. 1/24

7:20 am-8:50 am

1 stop17h 30m

Barcelona-El Prat

lun. 2/2

10:40 am-7:25 pm

1 stop16h 45m

$484

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/6

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, 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 noviembre 6, 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 18h 40m. KLM provides one of the quickest options available for as low as $468. There are 5275 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 $484 and $540 on Iberia and American Airlines, 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

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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 noviembre 6, 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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