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$357+ 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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — MAD
Aug 5 — Aug 121
Wed 8/5
Wed 8/12
1 adult, Economy
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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 July 6, 2026.

This Air France deal was found by Cheapflights users on 7/1. 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 11/181:15 pm
BOI
-
BIO
2 stops20h 10m
Multiple Airlines
Thu 11/265:20 pm
BIO
-
BOI
2 stops31h 29m
Multiple Airlines
Deal found 7/1$740
This Delta deal was found by Cheapflights users on 7/4. 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.
Sun 10/49:23 am
GEG
-
AGP
2 stops24h 17m
Delta
Tue 10/135:25 pm
AGP
-
GEG
2 stops30h 25m
Delta
Deal found 7/4$741
This United deal was found by Cheapflights users on 7/2. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:25 am
BOI
-
BIO
2 stops33h 00m
Multiple Airlines
Tue 10/276:45 am
BIO
-
BOI
2 stops24h 01m
Multiple Airlines
Deal found 7/2$742
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Sun 11/86:30 am
BOI
-
BIO
2 stops27h 35m
United Airlines
Thu 11/127:25 am
BIO
-
BOI
2 stops24h 21m
United Airlines
Deal found 7/1$744
This Delta deal was found by Cheapflights users on 7/3. 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.
Wed 11/1810:38 am
BOI
-
BIO
2 stops22h 47m
Delta
Fri 11/277:10 am
BIO
-
BOI
2 stops17h 39m
Delta
Deal found 7/3$747
This United Airlines deal was found by Cheapflights users on 7/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1311:10 am
GEG
-
BCN
1 stop17h 05m
United Airlines
Fri 10/2312:15 pm
BCN
-
GEG
2 stops41h 34m
United Airlines
Deal found 7/3$749
This United Airlines deal was found by Cheapflights users on 7/1. 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 9/305:00 am
GEG
-
BCN
2 stops18h 00m
United Airlines
Tue 10/612:15 pm
BCN
-
GEG
2 stops41h 34m
United Airlines
Deal found 7/1$752
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Tue 9/2910:30 am
BOI
-
BIO
2 stops28h 35m
United Airlines
Tue 10/136:50 am
BIO
-
BOI
2 stops22h 45m
United Airlines
Deal found 7/1$753
This United Airlines deal was found by Cheapflights users on 7/5. 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.
Tue 10/65:00 am
GEG
-
BCN
2 stops32h 25m
United Airlines
Wed 10/2112:15 pm
BCN
-
GEG
2 stops41h 34m
United Airlines
Deal found 7/5$756
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Sun 11/12:39 pm
BOI
-
BIO
2 stops24h 26m
United Airlines
Thu 11/511:35 am
BIO
-
BOI
2 stops57h 49m
United Airlines
Deal found 7/2$759
This CheapOair deal was found by Cheapflights users on 7/3. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/55:30 pm
BOI
-
BCN
2 stops31h 50m
Air Canada
Thu 10/1512:15 pm
BCN
-
BOI
2 stops37h 28m
Air Canada
Deal found 7/3$762
This American Airlines deal was found by Cheapflights users on 7/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/183:24 pm
BOI
-
BCN
2 stops17h 41m
American Airlines
Wed 10/2810:40 am
BCN
-
BOI
1 stop18h 49m
American Airlines
Deal found 7/2$765

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 July 6, 2026.

Round-trip from

$740
(Air France)

One-way from

$357
(American Airlines)

Popular in

June

Cheapest in

February

Average price

$1,159
From Idaho to Spain
Search Deals
One-way flight from Idaho to Spain
Search Deals
Highest demand for flights based on searches. 39% potential increase in price ($756 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 20% potential price decrease ($202 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
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 July 6, 2026.
Use the filters below to find and compare flights from Idaho to Spain that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

Tue 9/29

3:28 pm-5:30 pm

2 stops18h 02m

Bilbao

Tue 10/13

6:45 am-5:14 pm

2 stops18h 29m

$740

SpokaneMálaga

GEG - AGP

GEGAGP

Spokane

Sun 10/4

9:23 am-6:40 pm

2 stops24h 17m

Malaga

Tue 10/13

5:25 pm-2:50 pm

2 stops30h 25m

$741

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

Sun 11/8

6:30 am-6:05 pm

2 stops27h 35m

Bilbao

Thu 11/12

7:25 am-11:46 pm

2 stops24h 21m

$744

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

Wed 11/18

10:38 am-5:25 pm

2 stops22h 47m

Bilbao

Fri 11/27

7:10 am-4:49 pm

2 stops17h 39m

$747

SpokaneBarcelona

GEG - BCN

GEGBCN

Spokane

Wed 9/30

5:00 am-8:00 am

2 stops18h 00m

Barcelona-El Prat

Tue 10/6

12:15 pm-8:49 pm

2 stops41h 34m

$752

SpokaneBarcelona

GEG - BCN

GEGBCN

Spokane

Tue 10/13

5:00 am-1:15 pm

2 stops23h 15m

Barcelona-El Prat

Fri 10/23

12:15 pm-8:49 pm

2 stops41h 34m

$753

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

Tue 9/29

10:30 am-11:05 pm

2 stops28h 35m

Bilbao

Tue 10/13

6:50 am-9:35 pm

2 stops22h 45m

$753

SpokaneBarcelona

GEG - BCN

GEGBCN

Spokane

Tue 10/6

5:00 am-5:55 pm

2 stops27h 55m

Barcelona-El Prat

Thu 10/22

12:15 pm-8:49 pm

2 stops41h 34m

$756

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

Sun 11/1

2:39 pm-6:05 pm

2 stops19h 26m

Bilbao

Thu 11/5

11:35 am-9:38 am

2 stops54h 03m

$759

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

Mon 10/19

6:25 am-10:25 pm

2 stops32h 00m

Bilbao

Tue 10/27

6:45 am-4:59 pm

3 stops41h 14m

$764

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

Showing 1-10 of 55 resultsSorted by cheapest first
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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 $467). Flying from Idaho to Spain in June is currently the most expensive (average of $1,000). 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 15h 45m. Delta provides one of the quickest options available for as low as $793. There are 5127 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 $467). Flying from Idaho to Spain in June is currently the most expensive (average of $1,000). 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 5 airlines flying from Idaho to Spain

Discover the top 5 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 July 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$483Average$905FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$493Average$929FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$541Average$998FlexibilityNo cancel feeOn-time71%
DeltaCheapest$599Average$935FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$856Average$869FlexibilityNo cancel feeOn-time67%

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