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$345+ 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 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — MAD
Apr 26 — May 31
Sun 4/26
Sun 5/3
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 March 27, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 3/24. 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.
Tue 4/1410:35 am
BOI
-
AGP
2 stops23h 20m
Lufthansa
Wed 4/296:45 pm
AGP
-
BOI
2 stops36h 05m
Lufthansa
Deal found 3/24$511
This Justfly.com deal was found by Cheapflights users on 3/23. 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.
Tue 4/1410:35 am
BOI
-
AGP
2 stops23h 20m
Lufthansa
Tue 4/216:45 pm
AGP
-
BOI
2 stops36h 17m
Lufthansa
Deal found 3/23$519
This Justfly.com deal was found by Cheapflights users on 3/25. 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.
Tue 4/1410:35 am
BOI
-
AGP
2 stops23h 20m
Lufthansa
Wed 4/221:15 pm
AGP
-
BOI
2 stops40h 07m
Lufthansa
Deal found 3/25$538
This Cheapflightsfares deal was found by Cheapflights users on 3/24. 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.
Tue 9/292:43 pm
BOI
-
BIO
2 stops24h 22m
Lufthansa
Tue 10/137:15 am
BIO
-
BOI
2 stops18h 40m
Lufthansa
Deal found 3/24$670
This Air France deal was found by Cheapflights users on 3/23. 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.
Tue 9/291:43 pm
BOI
-
BIO
2 stops19h 47m
Multiple Airlines
Tue 10/137:10 am
BIO
-
BOI
2 stops19h 23m
Multiple Airlines
Deal found 3/23$673
This United Airlines deal was found by Cheapflights users on 3/23. 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 11/182:11 pm
BOI
-
BIO
2 stops19h 54m
United Airlines
Fri 11/276:45 am
BIO
-
BOI
2 stops25h 14m
United Airlines
Deal found 3/23$692
This eDestinos deal was found by Cheapflights users on 3/22. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/212:18 pm
BOI
-
MAD
1 stop13h 57m
Virgin Atlantic
Tue 4/282:35 pm
MAD
-
BOI
2 stops37h 54m
Virgin Atlantic
Deal found 3/22$698
This Cheapflightsfares deal was found by Cheapflights users on 3/25. 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.
Wed 8/512:38 pm
BOI
-
BIO
2 stops25h 47m
Lufthansa
Wed 8/197:15 am
BIO
-
BOI
2 stops18h 38m
Lufthansa
Deal found 3/25$698
This United Airlines deal was found by Cheapflights users on 3/23. 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.
Mon 9/288:20 am
BOI
-
BIO
2 stops31h 05m
United Airlines
Mon 10/122:10 pm
BIO
-
BOI
2 stops41h 49m
United Airlines
Deal found 3/23$712
This American Airlines deal was found by Cheapflights users on 3/24. 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 10/201:53 pm
GEG
-
BCN
2 stops16h 47m
American Airlines
Thu 10/2910:40 am
BCN
-
GEG
1 stop18h 07m
American Airlines
Deal found 3/24$715
This American Airlines deal was found by Cheapflights users on 3/23. 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 11/15:25 am
GEG
-
BCN
1 stop18h 25m
American Airlines
Tue 11/1710:40 am
BCN
-
GEG
1 stop19h 15m
American Airlines
Deal found 3/23$719
This KLM deal was found by Cheapflights users on 3/22. 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.
Mon 9/284:05 pm
BOI
-
BIO
2 stops21h 55m
Multiple Airlines
Mon 10/1210:30 am
BIO
-
BOI
2 stops20h 38m
Multiple Airlines
Deal found 3/22$723

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 March 27, 2026.

Round-trip from

$511
(Cheapflightsfares)

One-way from

$345
(United Airlines)

Popular in

June

Cheapest in

February

Average price

$843
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 ($328 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($72 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 27, 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

BoiseMálaga

BOI - AGP

BOIAGP

Boise Air Term. Gowen Fld

Tue 4/14

10:35 am-5:55 pm

2 stops23h 20m

Malaga

Wed 4/29

6:45 pm-10:50 pm

2 stops36h 05m

$511

BoiseMálaga

BOI - AGP

BOIAGP

Boise Air Term. Gowen Fld

Tue 4/14

10:35 am-5:55 pm

2 stops23h 20m

Malaga

Tue 4/21

6:45 pm-11:02 pm

2 stops36h 17m

$519

BoiseMálaga

BOI - AGP

BOIAGP

Boise Air Term. Gowen Fld

Tue 4/14

10:35 am-5:55 pm

2 stops23h 20m

Malaga

Wed 4/22

2:55 pm-9:22 pm

2 stops38h 27m

$538

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

Wed 8/5

12:38 pm-10:25 pm

2 stops25h 47m

Bilbao

Wed 8/19

7:15 am-5:53 pm

2 stops18h 38m

$698

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

Wed 8/5

2:55 pm-11:15 pm

2 stops24h 20m

Bilbao

Wed 8/19

6:45 am-11:26 am

2 stops36h 41m

$736

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

Wed 8/5

12:38 pm-10:25 pm

2 stops25h 47m

Bilbao

Wed 8/19

2:10 pm-4:48 pm

3 stops58h 38m

$766

JacksonMadrid

JAC - MAD

JACMAD

Jackson Hole

Wed 9/23

4:30 pm-2:25 pm

1 stop13h 55m

Madrid Barajas

Fri 10/16

7:50 pm-11:54 am

2 stops24h 04m

$775

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

Thu 4/23

12:52 pm-5:30 pm

2 stops20h 38m

Bilbao

Thu 4/30

10:30 am-10:28 pm

2 stops19h 58m

$783

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

Tue 7/28

12:38 pm-1:20 pm

2 stops16h 42m

Bilbao

Wed 8/26

6:50 am-5:53 pm

2 stops19h 03m

$785

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Mon 8/10

6:44 am-10:10 am

1 stop19h 26m

Barcelona-El Prat

Fri 8/21

3:35 pm-2:02 pm

2 stops30h 27m

$791

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

Showing 1-10 of 60 resultsSorted by cheapest first
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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, February is the cheapest month in which you can book a flight from Idaho to Spain (average of $476). Flying from Idaho to Spain in June is currently the most expensive (average of $776). 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 16h 20m. Lufthansa provides one of the quickest options available for as low as $817. There are 5070 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 $476). Flying from Idaho to Spain in June is currently the most expensive (average of $776). 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
Newark to Heathrow flights
John F Kennedy Intl to Charles de Gaulle flights
Newark to Charles de Gaulle flights
John F Kennedy Intl to Leonardo da Vinci/Fiumicino flights
Newark to Leonardo da Vinci/Fiumicino flights
LaGuardia to Heathrow flights
Newark to Gatwick flights
John F Kennedy Intl to London City flights
John F Kennedy Intl to Gatwick flights
Boston to Heathrow flights
John F Kennedy Intl to Madrid flights
John F Kennedy Intl to Lisbon flights
Dulles Intl to Heathrow flights
Newark to Athens flights
Newark to Madrid flights
John F Kennedy Intl to Dublin flights
John F Kennedy Intl to Barcelona-El Prat flights
John F Kennedy Intl to Malpensa flights
John F Kennedy Intl to Istanbul flights
Newark to Lisbon flights
John F Kennedy Intl to Orly flights
Newark to Dublin flights
LaGuardia to Gatwick flights
Los Angeles to Heathrow flights
Newark to Orly flights
Newark to Barcelona-El Prat flights
John F Kennedy Intl to Athens flights
Newark to Malpensa flights
Baltimore to Heathrow flights
Boston to Charles de Gaulle flights
O'Hare Intl to Leonardo da Vinci/Fiumicino flights
O'Hare Intl to Heathrow flights
Los Angeles to Leonardo da Vinci/Fiumicino flights
Dallas/Fort Worth to Heathrow flights
Seattle to Heathrow flights
John F Kennedy Intl to Frederic Chopin flights
Boston to Leonardo da Vinci/Fiumicino flights
Dulles Intl to Charles de Gaulle flights
San Francisco to Heathrow flights
Miami to Madrid flights
Newark to Stansted flights
Boston to Gatwick flights
O'Hare Intl to Charles de Gaulle flights
Newark to London City flights

Top 6 airlines flying from Idaho to Spain

Discover the top 6 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 March 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$483Average$669FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$489Average$896FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$493Average$724FlexibilityNo cancel feeOn-time69%
DeltaCheapest$529Average$933FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$651Average$857FlexibilityNo cancel feeOn-time67%
KLMCheapest$1,145Average$1,317FlexibilityNo cancel feeOn-time75%

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