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$479+ 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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — MAD
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
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 April 17, 2025.

Round-trip from

$603
(United Airlines)

One-way from

$479
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$898
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. 24% potential increase in price ($334 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($56 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 17, 2025.

This United Airlines deal was found by Cheapflights users on 4/15. 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 11/411:40 amGEG - BCN
1 stop16h 25mUnited Airlines
Tue 11/1112:15 pmBCN - GEG
2 stops36h 04mUnited Airlines
Deal found 4/15$549
This Air Canada deal was found by Cheapflights users on 4/15. 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.
Sat 11/15:22 pmBOI - MAD
2 stops33h 18mAir Canada
Fri 11/1412:15 pmMAD - BOI
2 stops37h 40mAir Canada
Deal found 4/15$559
This Delta deal was found by Cheapflights users on 4/15. 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 11/211:30 pmBOI - MAD
2 stops24h 30mDelta
Thu 11/1311:00 amMAD - BOI
2 stops21h 17mDelta
Deal found 4/15$581
This United Airlines deal was found by Cheapflights users on 4/16. 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 stops17h 35mUnited Airlines
Wed 10/1512:15 pmMAD - GEG
2 stops44h 00mUnited Airlines
Deal found 4/16$603
This United Airlines deal was found by Cheapflights users on 4/17. 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 10/1210:00 amBOI - BCN
1 stop20h 00mUnited Airlines
Wed 10/221:15 pmBCN - BOI
2 stops40h 17mUnited Airlines
Deal found 4/17$606
This United Airlines deal was found by Cheapflights users on 4/15. 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.
Sat 11/12:11 pmBOI - MAD
2 stops34h 54mUnited Airlines
Sat 11/1512:15 pmMAD - BOI
2 stops40h 53mUnited Airlines
Deal found 4/15$608
This KLM deal was found by Cheapflights users on 4/16. 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.
Wed 10/155:45 pmBOI - AGP
2 stops17h 30mKLM
Wed 10/228:05 pmAGP - BOI
2 stops30h 26mKLM
Deal found 4/16$609
This Justfly.com deal was found by Cheapflights users on 4/16. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/122:42 pmBOI - BCN
2 stops34h 38mAir Canada
Wed 10/2212:15 pmBCN - BOI
2 stops41h 17mAir Canada
Deal found 4/16$611
This Finnair deal was found by Cheapflights users on 4/16. 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.
Mon 12/15:52 amGEG - MAD
1 stop18h 33mMultiple Airlines
Fri 12/121:00 pmMAD - GEG
1 stop16h 44mMultiple Airlines
Deal found 4/16$626
This Finnair deal was found by Cheapflights users on 4/17. 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.
Wed 10/157:30 amBOI - MAD
1 stop22h 50mMultiple Airlines
Wed 10/224:00 pmMAD - BOI
1 stop28h 34mMultiple Airlines
Deal found 4/17$632
This Orbitz deal was found by Cheapflights users on 4/15. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/11:41 pmBOI - MAD
1 stop33h 34mIberia
Fri 11/1412:55 amMAD - BOI
1 stop28h 23mIberia
Deal found 4/15$638
This Air Canada deal was found by Cheapflights users on 4/16. 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.
Wed 10/17:00 amBOI - BCN
2 stops16h 50mMultiple Airlines
Wed 10/812:15 pmBCN - BOI
2 stops19h 29mMultiple Airlines
Deal found 4/16$660

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 April 17, 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

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Tue 9/30

5:15 am-7:50 am

2 stops17h 35m

Madrid Barajas

Wed 10/15

12:15 pm-11:15 pm

2 stops44h 00m

$603

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Tue 9/30

6:07 am-2:20 pm

1 stop23h 13m

Madrid Barajas

Wed 10/15

4:00 pm-11:43 am

1 stop28h 43m

$632

SpokaneBarcelona

GEG - BCN

GEGBCN

Spokane

Fri 9/26

11:21 am-7:50 am

2 stops59h 29m

Barcelona-El Prat

Mon 10/6

12:15 pm-12:36 pm

2 stops33h 21m

$655

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sat 5/10

6:30 am-7:50 am

2 stops41h 20m

Barcelona-El Prat

Fri 5/23

12:15 pm-9:26 pm

2 stops41h 11m

$717

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Tue 9/30

1:39 pm-4:35 pm

2 stops17h 56m

Madrid Barajas

Wed 10/15

12:40 pm-8:43 pm

1 stop17h 03m

$717

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sat 5/10

1:18 pm-9:20 am

1 stop36h 02m

Barcelona-El Prat

Fri 5/23

9:30 am-12:22 am

2 stops22h 52m

$730

SpokaneBarcelona

GEG - BCN

GEGBCN

Spokane

Sat 9/13

5:35 am-7:50 am

2 stops41h 15m

Barcelona-El Prat

Sun 9/21

8:00 pm-8:29 pm

2 stops33h 29m

$765

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sat 5/17

2:43 pm-4:45 pm

2 stops42h 02m

Barcelona-El Prat

Tue 5/20

2:05 pm-5:11 pm

1 stop35h 06m

$803

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Wed 5/7

7:00 am-4:45 pm

2 stops24h 45m

Madrid Barajas

Thu 5/15

10:05 am-9:59 pm

1 stop20h 54m

$815

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Wed 4/30

1:10 pm-4:45 pm

2 stops19h 35m

Madrid Barajas

Wed 5/7

12:40 pm-12:23 am

2 stops19h 43m

$819

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 41 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 $1,101). 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 April 17, 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.

Rainfall in Spain by month

Plan your trip to Spain by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Spain ranges from 0.8 - 3.6 inches per month. October is typically the wettest month, when rainfall can reach 3.6 in. July is typically the driest time to visit Spain when rainfall is around 0.8 in.

Temperature in Spain by month

Plan your trip to Spain by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Spain, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

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 April 17, 2025.
Get a feel of what it's like to fly with Delta, KLM and Finnair from Idaho to Spain by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,916 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,327 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,269 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,667 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Virgin Atlantic
7.4
Good
642 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 Scandinavian Airlines. According to our data, you can fly for as low as $480. Users have also found prices from $488 and $588 on United Airlines 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, 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 $1,101). 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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$530Average$941FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$549Average$1,080FlexibilityNo cancel feeOn-time71%
IberiaCheapest$564Average$1,018FlexibilityNo cancel feeOn-time77%
DeltaCheapest$570Average$1,151FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$612Average$1,142FlexibilityNo cancel feeOn-time75%

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