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$323+ 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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — MAD
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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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 July 3, 2025.

Round-trip from

$520
(Air Canada)

One-way from

$323
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,349
From Idaho to Spain
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One-way flight from Idaho to Spain
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Highest demand for flights based on searches. 26% potential increase in price ($356 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($60 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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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 July 3, 2025.

This Air Canada 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1110:45 amBOI - MAD
2 stops35h 55mAir Canada
Wed 8/2712:45 pmMAD - BOI
2 stops40h 29mAir Canada
Deal found 7/1$520
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/117:00 amBOI - MAD
1 stop18h 05mIberia
Wed 8/2712:40 pmMAD - BOI
1 stop17h 03mIberia
Deal found 7/1$538
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/307:00 amGEG - MAD
1 stop15h 55mMultiple Airlines
Wed 10/151:45 pmMAD - GEG
2 stops19h 33mMultiple Airlines
Deal found 7/1$543
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/161:38 pmBOI - MAD
1 stop16h 42mAmerican Airlines
Tue 9/234:40 pmMAD - BOI
1 stop27h 47mAmerican Airlines
Deal found 7/1$548
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.
Tue 9/305:15 amGEG - MAD
2 stops18h 45mUnited Airlines
Wed 10/1512:30 pmMAD - GEG
2 stops40h 54mUnited Airlines
Deal found 7/2$575
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/304:00 pmGEG - MAD
2 stops31h 20mAir Canada
Wed 10/1512:30 pmMAD - GEG
2 stops33h 06mAir Canada
Deal found 7/3$578
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/307:00 amGEG - MAD
1 stop15h 55mAmerican Airlines
Wed 10/154:40 pmMAD - GEG
1 stop28h 40mAmerican Airlines
Deal found 7/1$582
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:20 amBOI - BCN
2 stops19h 15mAir Canada
Wed 11/191:35 pmBCN - BOI
2 stops28h 23mAir Canada
Deal found 7/1$583
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.
Wed 11/196:15 amBOI - BCN
2 stops19h 20mUnited Airlines
Thu 11/2711:00 amBCN - BOI
2 stops19h 55mUnited Airlines
Deal found 7/2$587
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.
Mon 12/17:21 pmGEG - MAD
2 stops27h 39mDelta
Fri 12/1211:00 amMAD - GEG
2 stops21h 39mDelta
Deal found 7/3$592
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 12/76:25 amBOI - MAD
2 stops17h 35mUnited Airlines
Tue 12/166:05 amMAD - BOI
2 stops21h 02mUnited Airlines
Deal found 7/1$593
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/157:00 amBOI - MAD
2 stops16h 55mMultiple Airlines
Fri 8/221:00 pmMAD - BOI
2 stops18h 57mMultiple Airlines
Deal found 7/1$598

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 3, 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

Mon 8/11

10:45 am-6:40 am

2 stops35h 55m

Madrid Barajas

Wed 8/27

12:45 pm-9:14 pm

2 stops40h 29m

$520

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Mon 8/11

7:00 am-9:05 am

1 stop18h 05m

Madrid Barajas

Wed 8/27

12:40 pm-9:43 pm

1 stop17h 03m

$538

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Tue 9/30

7:00 am-7:55 am

1 stop15h 55m

Madrid Barajas

Wed 10/15

1:45 pm-12:18 am

2 stops19h 33m

$543

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Tue 9/16

1:38 pm-2:20 pm

1 stop16h 42m

Madrid Barajas

Tue 9/23

4:40 pm-12:27 pm

1 stop27h 47m

$548

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Wed 11/12

12:35 pm-1:05 pm

1 stop16h 30m

Barcelona-El Prat

Wed 11/19

1:35 pm-10:55 pm

2 stops41h 20m

$560

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Wed 11/12

6:15 am-9:35 am

3 stops19h 20m

Barcelona-El Prat

Wed 11/19

1:35 pm-1:25 pm

3 stops31h 50m

$573

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Tue 9/30

5:15 am-9:00 am

2 stops18h 45m

Madrid Barajas

Wed 10/15

12:30 pm-8:24 pm

2 stops40h 54m

$575

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Tue 9/30

4:00 pm-8:20 am

2 stops31h 20m

Madrid Barajas

Wed 10/15

12:30 pm-12:36 pm

2 stops33h 06m

$578

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Tue 9/30

7:00 am-7:55 am

1 stop15h 55m

Madrid Barajas

Wed 10/15

4:40 pm-12:20 pm

1 stop28h 40m

$582

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Mon 12/1

7:21 pm-8:00 am

2 stops27h 39m

Madrid Barajas

Fri 12/12

11:00 am-11:39 pm

2 stops21h 39m

$592

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

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, November is the cheapest month in which you can book a flight from Idaho to Spain (average of $543). Flying from Idaho to Spain in June is currently the most expensive (average of $1,054). 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 July 3, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to Spain as you normally would.

Reviews of airlines servicing Spain

Get insights into the airlines that provide service to Spain. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Spain. Reviews last updated July 3, 2025.
Peruse reviews from past customers who have flown with Delta, KLM, and Finnair from Idaho to Spain to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,982 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,982 reviews
Delta
8.0
Very good
7,982 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,367 reviews
Delta
8.0
Very good
7,982 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Finnair
7.6
Good
1,306 reviews
Delta
8.0
Very good
7,982 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,982 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,654 reviews
Delta
8.0
Very good
7,982 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

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

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $419. Users have also found prices from $448 and $468 on Air Canada and United 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, November is the cheapest month in which you can book a flight from Idaho to Spain (average of $543). Flying from Idaho to Spain in June is currently the most expensive (average of $1,054). 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.
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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 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$530Average$797FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$549Average$1,035FlexibilityNo cancel feeOn-time71%
IberiaCheapest$564Average$883FlexibilityNo cancel feeOn-time77%
DeltaCheapest$568Average$1,099FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$664Average$1,317FlexibilityNo cancel feeOn-time75%

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