HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Spain

$382+ 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 7/7. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — MAD
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Idaho to Spain with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 May 1, 2025.

Round-trip from

$546
(American Airlines)

One-way from

$382
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,044
From Idaho to Spain
Search Deals
One-way flight from Idaho to Spain
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($335 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($57 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2025
Search Deals

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 May 1, 2025.

This American Airlines deal was found by Cheapflights users on 4/30. 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 9/306:07 amGEG - MAD
1 stop23h 13mAmerican Airlines
Wed 10/1512:40 pmMAD - GEG
1 stop17h 03mAmerican Airlines
Deal found 4/30$546
This American Airlines deal was found by Cheapflights users on 4/30. 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.
Wed 10/11:17 pmBOI - BCN
1 stop13h 13mAmerican Airlines
Tue 10/710:45 amBCN - BOI
2 stops20h 51mAmerican Airlines
Deal found 4/30$547
This Delta deal was found by Cheapflights users on 4/30. 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 9/2210:59 pmGEG - MAD
2 stops23h 51mDelta
Thu 10/910:05 amMAD - GEG
1 stop20h 55mDelta
Deal found 4/30$551
This Finnair deal was found by Cheapflights users on 4/30. 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.
Tue 9/237:30 amBOI - MAD
1 stop22h 50mMultiple Airlines
Thu 10/234:00 pmMAD - BOI
1 stop28h 34mMultiple Airlines
Deal found 4/30$552
This United Airlines deal was found by Cheapflights users on 5/1. 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 10/12:45 pmBOI - BCN
1 stop15h 15mUnited Airlines
Tue 10/712:10 pmBCN - BOI
2 stops41h 22mUnited Airlines
Deal found 5/1$559
This Finnair deal was found by Cheapflights users on 4/30. 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 10/17:30 amBOI - BCN
2 stops28h 35mMultiple Airlines
Wed 10/83:40 pmBCN - BOI
2 stops28h 54mMultiple Airlines
Deal found 4/30$564
This Expedia deal was found by Cheapflights users on 4/30. 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.
Sun 9/211:41 pmBOI - BCN
2 stops22h 39mIberia
Tue 9/309:20 pmBCN - BOI
2 stops31h 54mIberia
Deal found 4/30$569
This Delta deal was found by Cheapflights users on 4/30. 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.
Tue 9/235:40 amBOI - MAD
2 stops18h 10mDelta
Thu 10/236:00 amMAD - BOI
2 stops18h 29mDelta
Deal found 4/30$574
This United Airlines deal was found by Cheapflights users on 4/30. 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 9/237:00 amBOI - MAD
2 stops17h 20mUnited Airlines
Thu 10/2312:30 pmMAD - BOI
2 stops38h 04mUnited Airlines
Deal found 4/30$577
This Air Canada deal was found by Cheapflights users on 4/30. 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.
Tue 9/301:38 pmGEG - MAD
2 stops33h 42mMultiple Airlines
Wed 10/1512:45 pmMAD - GEG
3 stops32h 51mMultiple Airlines
Deal found 4/30$577
This American Airlines deal was found by Cheapflights users on 4/30. 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.
Wed 10/81:15 pmJAC - BCN
1 stop13h 15mAmerican Airlines
Sun 10/263:05 pmBCN - JAC
2 stops28h 07mAmerican Airlines
Deal found 4/30$597
This Air Canada deal was found by Cheapflights users on 4/30. 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.
Tue 9/235:00 amBOI - MAD
3 stops19h 20mAir Canada
Thu 10/2312:30 pmMAD - BOI
3 stops29h 12mAir Canada
Deal found 4/30$604

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 May 1, 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

6:07 am-2:20 pm

1 stop23h 13m

Madrid Barajas

Wed 10/15

12:40 pm-8:43 pm

1 stop17h 03m

$546

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Wed 10/1

1:17 pm-10:30 am

1 stop13h 13m

Barcelona-El Prat

Tue 10/7

10:45 am-11:36 pm

2 stops20h 51m

$547

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Mon 9/22

10:59 pm-7:50 am

2 stops23h 51m

Madrid Barajas

Thu 10/9

10:05 am-12:18 am

2 stops23h 13m

$551

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Tue 9/23

7:30 am-2:20 pm

1 stop22h 50m

Madrid Barajas

Thu 10/23

4:00 pm-12:34 pm

1 stop28h 34m

$552

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Wed 10/1

2:45 pm-2:00 pm

1 stop15h 15m

Barcelona-El Prat

Tue 10/7

12:10 pm-9:32 pm

2 stops41h 22m

$559

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Wed 10/1

7:30 am-8:05 pm

2 stops28h 35m

Barcelona-El Prat

Wed 10/8

3:40 pm-12:34 pm

2 stops28h 54m

$564

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sun 9/21

1:41 pm-8:20 pm

2 stops22h 39m

Barcelona-El Prat

Tue 9/30

9:20 pm-9:14 pm

2 stops31h 54m

$569

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Tue 9/23

5:40 am-7:50 am

2 stops18h 10m

Madrid Barajas

Thu 10/23

6:00 am-4:29 pm

2 stops18h 29m

$574

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Tue 9/23

7:00 am-8:20 am

2 stops17h 20m

Madrid Barajas

Thu 10/23

12:30 pm-6:34 pm

2 stops38h 04m

$577

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Tue 9/30

1:38 pm-8:20 am

2 stops33h 42m

Madrid Barajas

Wed 10/15

12:45 pm-12:36 pm

3 stops32h 51m

$577

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 52 results
1
2
3
...
6

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 $1,086). 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 May 1, 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 May 1, 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
7,934 reviews

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

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
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

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
1,334 reviews
Delta
8.0
Very good
7,934 reviews

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

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
1,275 reviews
Delta
8.0
Very good
7,934 reviews

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

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
8,696 reviews
Delta
8.0
Very good
7,934 reviews

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

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.
Scandinavian Airlines
7.3
Good
1,349 reviews
Delta
8.0
Very good
7,934 reviews

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

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 Delta. According to our data, you can fly for as low as $448. Users have also found prices from $488 and $489 on United Airlines and Lufthansa, 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 $1,086). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Idaho to Spain

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Heathrow flights
John F Kennedy Intl to Charles de Gaulle flights
Newark to Heathrow flights
John F Kennedy Intl to Leonardo da Vinci/Fiumicino flights
Newark to Charles de Gaulle flights
John F Kennedy Intl to Gatwick flights
Newark to Leonardo da Vinci/Fiumicino flights
Newark to Athens flights
John F Kennedy Intl to Lisbon flights
LaGuardia to Heathrow flights
John F Kennedy Intl to Istanbul flights
John F Kennedy Intl to Athens flights
John F Kennedy Intl to Orly flights
Boston to Heathrow flights
Los Angeles to Heathrow flights
John F Kennedy Intl to Barcelona-El Prat flights
John F Kennedy Intl to London City flights
Dulles Intl to Heathrow flights
Miami to Madrid flights
Newark to Barcelona-El Prat flights
Newark to Lisbon flights
San Francisco to Heathrow flights
Newark to Gatwick flights
Newark to Orly flights
LaGuardia to Charles de Gaulle flights
John F Kennedy Intl to Madrid flights
John F Kennedy Intl to Malpensa flights
O'Hare Intl to Heathrow flights
Dallas/Fort Worth to Heathrow flights
Seattle to Heathrow flights
O'Hare Intl to Leonardo da Vinci/Fiumicino flights
Newark to Dublin flights
John F Kennedy Intl to Dublin flights
Dulles Intl to Charles de Gaulle flights
Newark to Madrid flights
O'Hare Intl to Charles de Gaulle flights
Boston to Leonardo da Vinci/Fiumicino flights
O'Hare Intl to Athens flights
Baltimore to Heathrow flights
Dallas/Fort Worth to Charles de Gaulle flights
Boston to Charles de Gaulle flights
LaGuardia to Gatwick flights
LaGuardia to Leonardo da Vinci/Fiumicino flights
Dulles Intl to Leonardo da Vinci/Fiumicino flights
Newark to Malpensa flights
LaGuardia to Athens flights
Boston to Gatwick flights
Atlanta to Heathrow flights
San Francisco to Charles de Gaulle flights
Newark to Frankfurt flights

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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$530Average$925FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$549Average$1,062FlexibilityNo cancel feeOn-time71%
IberiaCheapest$564Average$1,008FlexibilityNo cancel feeOn-time77%
DeltaCheapest$570Average$1,166FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$664Average$1,317FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.