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$257+ 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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — MAD
mar 30 — abr 61
seg 3/30
seg 4/6
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 fevereiro 28, 2026.

This United Airlines deal was found by Cheapflights users on 2/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 11/182:11 pm
BOI
-
BIO
2 stops19h 54m
United Airlines
qui 11/266:45 am
BIO
-
BOI
2 stops24h 21m
United Airlines
Deal found 2/25$524
This Air France deal was found by Cheapflights users on 2/25. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 9/291:43 pm
BOI
-
BIO
2 stops19h 47m
Air France
ter 10/1310:30 am
BIO
-
BOI
2 stops20h 38m
Air France
Deal found 2/25$529
This Delta deal was found by Cheapflights users on 2/27. 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.
ter 9/292:45 pm
BOI
-
BIO
2 stops18h 45m
Delta
ter 10/1310:30 am
BIO
-
BOI
2 stops20h 38m
Delta
Deal found 2/27$549
This Finnair deal was found by Cheapflights users on 2/25. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 10/71:34 pm
BOI
-
BIO
2 stops25h 41m
Multiple Airlines
qua 10/216:45 am
BIO
-
BOI
2 stops37h 38m
Multiple Airlines
Deal found 2/25$567
This Expedia deal was found by Cheapflights users on 2/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 9/287:28 am
BOI
-
BIO
2 stops31h 47m
Iberia
seg 10/121:30 pm
BIO
-
BOI
2 stops39h 35m
Iberia
Deal found 2/24$588
This KLM deal was found by Cheapflights users on 2/27. 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.
ter 4/72:15 pm
GEG
-
AGP
2 stops19h 55m
KLM
sex 4/171:15 pm
AGP
-
GEG
2 stops19h 19m
KLM
Deal found 2/27$596
This Finnair deal was found by Cheapflights users on 2/26. 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.
qua 8/56:59 am
BOI
-
BIO
2 stops32h 16m
Multiple Airlines
qua 8/196:45 am
BIO
-
BOI
2 stops36h 44m
Multiple Airlines
Deal found 2/26$597
This Finnair deal was found by Cheapflights users on 2/27. 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.
ter 9/221:18 pm
BOI
-
MAD
2 stops16h 02m
Multiple Airlines
ter 9/297:50 pm
MAD
-
BOI
2 stops24h 41m
Multiple Airlines
Deal found 2/27$599
This Delta deal was found by Cheapflights users on 2/27. 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.
ter 4/1410:41 am
BOI
-
BIO
2 stops22h 49m
Delta
ter 4/216:45 am
BIO
-
BOI
2 stops23h 39m
Delta
Deal found 2/27$602
This FlightHub deal was found by Cheapflights users on 2/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 11/1812:29 pm
BOI
-
BIO
2 stops26h 21m
Lufthansa
qui 11/266:45 am
BIO
-
BOI
2 stops22h 31m
Lufthansa
Deal found 2/24$604
This United Airlines deal was found by Cheapflights users on 2/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 11/184:05 pm
BOI
-
BIO
2 stops23h 00m
United Airlines
sex 11/276:45 am
BIO
-
BOI
2 stops24h 21m
United Airlines
Deal found 2/25$605
This Flighttix deal was found by Cheapflights users on 2/24. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 4/133:23 pm
BOI
-
MAD
2 stops34h 32m
Virgin Atlantic
ter 4/282:35 pm
MAD
-
BOI
2 stops37h 25m
Virgin Atlantic
Deal found 2/24$607

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 fevereiro 28, 2026.

Round-trip from

$596
(KLM)

One-way from

$305
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$484
From Idaho to Spain
Search Deals
One-way flight from Idaho to Spain
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($268 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($48 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 fevereiro 28, 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

SpokaneMálaga

GEG - AGP

GEGAGP

Spokane

ter 4/7

2:15 pm-7:10 pm

2 stops19h 55m

Malaga

sex 4/17

1:15 pm-11:34 pm

2 stops19h 19m

$596

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

qua 8/5

6:59 am-11:15 pm

2 stops32h 16m

Bilbao

qua 8/19

6:45 am-11:29 am

2 stops36h 44m

$597

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

ter 4/14

10:41 am-5:30 pm

2 stops22h 49m

Bilbao

ter 4/21

6:45 am-10:24 pm

2 stops23h 39m

$602

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

seg 4/13

7:38 pm-9:55 am

2 stops29h 17m

Madrid Barajas

ter 4/28

2:35 pm-4:30 pm

2 stops34h 55m

$619

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

qua 4/22

6:00 am-12:50 pm

2 stops21h 50m

Madrid Barajas

qua 4/29

7:35 pm-12:32 pm

2 stops25h 57m

$633

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

seg 4/13

10:40 pm-12:15 pm

1 stop28h 35m

Madrid Barajas

ter 4/28

2:35 pm-8:47 am

2 stops27h 12m

$640

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

ter 4/14

12:52 pm-3:35 pm

2 stops18h 43m

Madrid Barajas

ter 4/28

6:00 am-9:24 pm

2 stops23h 24m

$641

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

ter 4/14

1:41 pm-2:25 pm

1 stop16h 44m

Madrid Barajas

ter 4/28

3:55 pm-12:51 pm

1 stop28h 56m

$654

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

ter 8/11

2:55 pm-2:25 pm

1 stop15h 30m

Madrid Barajas

ter 8/25

4:25 pm-12:46 pm

2 stops28h 21m

$663

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

qui 4/16

1:29 pm-1:30 pm

2 stops16h 01m

Madrid Barajas

sex 5/1

7:35 pm-1:03 pm

2 stops25h 28m

$671

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/24

Showing 1-10 of 60 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 $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 19h 55m. KLM provides one of the quickest options available for as low as $596. There are 5298 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

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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 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 fevereiro 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$483Average$668FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$493Average$724FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$541Average$901FlexibilityNo cancel feeOn-time71%
DeltaCheapest$550Average$952FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$651Average$857FlexibilityNo cancel feeOn-time67%
KLMCheapest$1,145Average$1,317FlexibilityNo cancel feeOn-time75%

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