HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Spain

$357+ 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 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — MAD
Jul 8 — Jul 151
Wed 7/8
Wed 7/15
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

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 June 8, 2026.

This Delta deal was found by Cheapflights users on 6/3. 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.
Wed 11/1812:42 pm
BOI
-
BIO
2 stops20h 38m
Delta
Thu 11/266:50 am
BIO
-
BOI
2 stops16h 40m
Delta
Deal found 6/3$741
This KAYAK deal was found by Cheapflights users on 6/4. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/187:00 am
BOI
-
BIO
2 stops27h 05m
Lufthansa
Fri 11/276:45 am
BIO
-
BOI
2 stops25h 14m
Lufthansa
Deal found 6/4$742
This United Airlines deal was found by Cheapflights users on 6/5. 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 11/1811:45 am
BOI
-
BIO
2 stops27h 20m
United Airlines
Fri 11/276:45 am
BIO
-
BOI
2 stops22h 30m
United Airlines
Deal found 6/5$743
This FlightHub deal was found by Cheapflights users on 6/7. 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 9/2910:30 am
BOI
-
BIO
2 stops22h 40m
Lufthansa
Tue 10/137:15 am
BIO
-
BOI
2 stops22h 20m
Lufthansa
Deal found 6/7$745
This Delta deal was found by Cheapflights users on 6/3. 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.
Tue 9/2910:35 am
BOI
-
BIO
2 stops22h 55m
Delta
Tue 10/1310:30 am
BIO
-
BOI
2 stops21h 22m
Delta
Deal found 6/3$748
This Orbitz deal was found by Cheapflights users on 6/5. 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 9/261:50 pm
BOI
-
VLC
2 stops37h 15m
Iberia
Wed 10/78:20 pm
VLC
-
BOI
2 stops33h 57m
Iberia
Deal found 6/5$749
This United Airlines deal was found by Cheapflights users on 6/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/292:45 pm
BOI
-
BIO
2 stops24h 20m
United Airlines
Tue 10/136:50 am
BIO
-
BOI
2 stops25h 02m
United Airlines
Deal found 6/3$755
This Ovago deal was found by Cheapflights users on 6/3. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:05 pm
BOI
-
BIO
2 stops20h 20m
Lufthansa
Mon 10/122:10 pm
BIO
-
BOI
2 stops41h 42m
Lufthansa
Deal found 6/3$763
This American Airlines deal was found by Cheapflights users on 6/7. 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 10/61:46 pm
JAC
-
BCN
2 stops16h 29m
American Airlines
Tue 10/207:00 pm
BCN
-
JAC
2 stops25h 33m
American Airlines
Deal found 6/7$770
This Air Canada deal was found by Cheapflights users on 6/7. 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 10/176:50 pm
BOI
-
MAD
2 stops28h 00m
Air Canada
Fri 10/2312:45 pm
MAD
-
BOI
2 stops32h 53m
Air Canada
Deal found 6/7$777
This United Airlines deal was found by Cheapflights users on 6/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:00 am
GEG
-
BCN
1 stop23h 20m
United Airlines
Fri 10/2312:15 pm
BCN
-
GEG
2 stops35h 50m
United Airlines
Deal found 6/3$779
This American Airlines deal was found by Cheapflights users on 6/6. 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 9/223:21 pm
BOI
-
BCN
2 stops19h 19m
American Airlines
Wed 9/3010:45 am
BCN
-
BOI
2 stops19h 42m
American Airlines
Deal found 6/6$781

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 June 8, 2026.

Round-trip from

$741
(Delta)

One-way from

$357
(American Airlines)

Popular in

June

Cheapest in

February

Average price

$1,726
From Idaho to Spain
Search Deals
One-way flight from Idaho to Spain
Search Deals
Highest demand for flights based on searches. 28% potential increase in price ($395 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($69 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 8, 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

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

Wed 11/18

1:15 pm-5:20 pm

2 stops20h 05m

Bilbao

Thu 11/26

6:50 am-3:30 pm

2 stops16h 40m

$741

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

Wed 11/18

12:42 pm-5:20 pm

2 stops20h 38m

Bilbao

Thu 11/26

6:50 am-3:30 pm

2 stops16h 40m

$741

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

Wed 11/18

7:00 am-6:05 pm

2 stops27h 05m

Bilbao

Fri 11/27

6:45 am-11:59 pm

2 stops25h 14m

$742

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

Wed 11/18

11:45 am-11:05 pm

2 stops27h 20m

Bilbao

Fri 11/27

6:45 am-9:15 pm

2 stops22h 30m

$743

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

Tue 9/29

10:35 am-5:30 pm

2 stops22h 55m

Bilbao

Tue 10/13

10:30 am-11:52 pm

2 stops21h 22m

$748

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

Tue 9/29

2:44 pm-11:05 pm

2 stops24h 21m

Bilbao

Tue 10/13

6:50 am-11:59 pm

2 stops25h 09m

$755

JacksonBarcelona

JAC - BCN

JACBCN

Jackson Hole

Tue 10/6

1:46 pm-2:15 pm

2 stops16h 29m

Barcelona-El Prat

Tue 10/20

7:00 pm-12:33 pm

2 stops25h 33m

$770

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Sun 11/8

1:14 pm-4:55 pm

2 stops18h 41m

Madrid Barajas

Thu 11/12

1:00 pm-8:55 pm

1 stop16h 55m

$790

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Sun 11/8

7:02 am-11:35 pm

2 stops31h 33m

Madrid Barajas

Thu 11/12

6:00 am-9:09 pm

2 stops24h 09m

$795

BoiseValencia

BOI - VLC

BOIVLC

Boise Air Term. Gowen Fld

Sat 9/26

3:29 pm-4:35 pm

2 stops17h 06m

Valencia

Wed 10/7

6:35 am-8:17 pm

2 stops21h 42m

$796

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/4

Showing 1-10 of 60 resultsSorted by cheapest first
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, February is the cheapest month in which you can book a flight from Idaho to Spain (average of $467). Flying from Idaho to Spain in June is currently the most expensive (average of $823). 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 29m. Delta provides one of the quickest options available for as low as $770. There are 5238 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 $467). Flying from Idaho to Spain in June is currently the most expensive (average of $823). 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
John F Kennedy Intl to Gatwick flights
Newark to Leonardo da Vinci/Fiumicino flights
LaGuardia to Heathrow flights
Newark to Gatwick flights
John F Kennedy Intl to London City flights
Newark to Athens flights
John F Kennedy Intl to Istanbul flights
Boston to Heathrow flights
Newark to Orly flights
Dulles Intl to Heathrow flights
John F Kennedy Intl to Orly flights
John F Kennedy Intl to Athens flights
Los Angeles to Heathrow flights
John F Kennedy Intl to Madrid flights
John F Kennedy Intl to Lisbon flights
Newark to Lisbon flights
Newark to Madrid flights
John F Kennedy Intl to Barcelona-El Prat flights
John F Kennedy Intl to Malpensa flights
San Francisco to Heathrow flights
Newark to Barcelona-El Prat flights
Los Angeles to Charles de Gaulle flights
John F Kennedy Intl to Dublin flights
Dallas/Fort Worth to Heathrow flights
Newark to Dublin flights
Los Angeles to Leonardo da Vinci/Fiumicino flights
Baltimore to Heathrow flights
O'Hare Intl to Heathrow flights
LaGuardia to Gatwick flights
Newark to Malpensa flights
Miami to Madrid flights
Seattle to Heathrow flights
Dulles Intl to Charles de Gaulle flights
O'Hare Intl to Leonardo da Vinci/Fiumicino flights
Boston to Gatwick flights
John F Kennedy Intl to Frankfurt flights
Boston to Charles de Gaulle flights
John F Kennedy Intl to Frederic Chopin flights
Newark to Frankfurt flights
San Francisco to Charles de Gaulle flights
Boston to Leonardo da Vinci/Fiumicino flights
Boston to Dublin 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 June 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$483Average$771FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$493Average$879FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$541Average$1,015FlexibilityNo cancel feeOn-time71%
DeltaCheapest$599Average$961FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$856Average$869FlexibilityNo cancel feeOn-time67%

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.