What is the cheapest airline that flies from Idaho to Spain?

American Airlines, Air Canada, and United Airlines are the most popular carriers operating from Idaho to Spain

What airlines fly to Spain?

United Airlines, Delta and Iberia are the top three most popular airlines that fly to Spain from Idaho according to our data. United Airlines is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Spain. Keep in mind that there are 5 different airlines that fly to Spain on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Idaho to Spain?

Prices for flights from Idaho to Spain refresh daily.

How many operators does momondo search for flights from Idaho to Spain?

There are 5 operators available for flights from Idaho to Spain as of July 2026.

How old do you have to be to fly from Idaho to Spain?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Idaho to Spain.

What documentation or ID do you need to fly to Spain?

The required travel and health documents for your Spain trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Spain. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$357 Cheap Flights from Idaho to Spain in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Idaho to Spain

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:52 am - 10:10 pm

BOI

BCN

27h 18m

2 stops

8:00 am - 10:27 pm

BCN

BOI

22h 27m

2 stops

$727Multiple Airlines

Sun, Aug 9 - Tue, Aug 25

5:00 am - 6:50 am

GEG

MAD

16h 50m

2 stops

12:45 pm - 3:22 pm

MAD

GEG

35h 37m

2 stops

$733United Airlines

Tue, Oct 6 - Fri, Oct 16

6:59 pm - 7:45 am

BOI

MAD

28h 46m

2 stops

1:25 pm - 11:06 pm

MAD

BOI

41h 41m

2 stops

$735United Airlines

Mon, Nov 2 - Tue, Nov 10

12:42 pm - 5:25 pm

BOI

BIO

20h 43m

2 stops

6:50 am - 3:30 pm

BIO

BOI

16h 40m

2 stops

$740Delta

Wed, Nov 18 - Thu, Nov 26

10:38 am - 5:25 pm

BOI

BIO

22h 47m

2 stops

7:10 am - 4:49 pm

BIO

BOI

17h 39m

2 stops

$747Delta

Wed, Nov 18 - Fri, Nov 27

7:00 am - 10:30 am

BOI

MAD

19h 30m

2 stops

12:55 am - 12:38 pm

MAD

BOI

19h 43m

1 stop

$755American Airlines

Mon, Nov 2 - Mon, Nov 9

7:00 am - 8:05 pm

BOI

VLC

29h 05m

2 stops

7:30 am - 10:29 pm

VLC

BOI

21h 59m

2 stops

$760Iberia

Sun, Oct 18 - Tue, Oct 27

6:00 am - 9:05 am

GEG

MAD

18h 05m

1 stop

9:00 pm - 8:43 pm

MAD

GEG

32h 43m

2 stops

$762Iberia

Tue, Oct 6 - Mon, Oct 19

5:25 am - 7:45 am

GEG

MAD

17h 20m

1 stop

11:05 am - 8:55 pm

MAD

GEG

18h 50m

1 stop

$793American Airlines

Sun, Nov 8 - Thu, Nov 12

3:24 pm - 9:35 am

BOI

MAD

34h 11m

1 stop

12:55 am - 12:38 pm

MAD

BOI

19h 43m

1 stop

$794British Airways

Mon, Nov 2 - Mon, Nov 9

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American Airlines flights from Idaho to Spain

Our best American Airlines deals on Idaho to Spain flight tickets

American Airlines

Nov 2

BOI7:00 amBoise Air Term. Gowen Fld

19h 30m

2 stops

MAD10:30 amMadrid Barajas

Nov 9

MAD12:55 amMadrid Barajas

19h 43m

1 stop

BOI12:38 pmBoise Air Term. Gowen Fld

$755

American Airlines

Nov 8

GEG5:25 amSpokane

17h 20m

1 stop

MAD7:45 amMadrid Barajas

Nov 12

MAD11:05 amMadrid Barajas

18h 50m

1 stop

GEG8:55 pmSpokane

$793

American Airlines

Nov 2

BOI7:00 amBoise Air Term. Gowen Fld

18h 00m

2 stops

MAD9:00 amMadrid Barajas

Nov 9

MAD12:55 amMadrid Barajas

19h 43m

1 stop

BOI12:38 pmBoise Air Term. Gowen Fld

$798

Air Canada flights from Idaho to Spain

Our best Air Canada deals on Idaho to Spain flight tickets

Air Canada

Nov 8

GEG11:30 amSpokane

35h 30m

3 stops

MAD8:00 amMadrid Barajas

Nov 12

MAD1:25 pmMadrid Barajas

32h 22m

3 stops

GEG12:47 pmSpokane

$812

Air Canada

Oct 13

GEG11:10 amSpokane

35h 50m

3 stops

BCN8:00 amBarcelona-El Prat

Nov 10

BCN5:55 amBarcelona-El Prat

24h 06m

3 stops

GEG9:01 pmSpokane

$849

Air Canada

Aug 10

BOI7:05 pmBoise Air Term. Gowen Fld

28h 55m

2 stops

BCN8:00 amBarcelona-El Prat

Aug 21

BCN12:15 pmBarcelona-El Prat

41h 22m

2 stops

BOI9:37 pmBoise Air Term. Gowen Fld

$864

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sun 8/9

10:52 am-10:10 pm

2 stops27h 18m

Barcelona-El Prat

Tue 8/25

8:00 am-10:27 pm

2 stops22h 27m

$727

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Tue 10/6

5:00 am-6:50 am

2 stops16h 50m

Madrid Barajas

Fri 10/16

12:45 pm-3:22 pm

2 stops35h 37m

$733

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Mon 11/2

6:59 pm-7:45 am

2 stops28h 46m

Madrid Barajas

Tue 11/10

1:25 pm-11:06 pm

2 stops41h 41m

$735

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

Wed 11/18

12:42 pm-5:25 pm

2 stops20h 43m

Bilbao

Thu 11/26

6:50 am-3:30 pm

2 stops16h 40m

$740

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

Wed 11/18

10:38 am-5:25 pm

2 stops22h 47m

Bilbao

Fri 11/27

7:10 am-4:49 pm

2 stops17h 39m

$747

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Mon 11/2

7:00 am-10:30 am

2 stops19h 30m

Madrid Barajas

Mon 11/9

12:55 am-12:38 pm

1 stop19h 43m

$755

BoiseValencia

BOI - VLC

BOIVLC

Boise Air Term. Gowen Fld

Sun 10/18

7:00 am-8:05 pm

2 stops29h 05m

Valencia

Tue 10/27

7:30 am-10:29 pm

2 stops21h 59m

$760

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Tue 10/6

6:00 am-9:05 am

1 stop18h 05m

Madrid Barajas

Mon 10/19

9:00 pm-8:43 pm

2 stops32h 43m

$762

Quickest round-trip

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Sun 11/8

5:25 am-7:45 am

1 stop17h 20m

Madrid Barajas

Thu 11/12

11:05 am-8:55 pm

1 stop18h 50m

$793

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Mon 11/2

3:24 pm-9:35 am

1 stop34h 11m

Madrid Barajas

Mon 11/9

12:55 am-12:38 pm

1 stop19h 43m

$794

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Idaho to Spain

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Spain?

If you don’t want to visit Spain in February, then you should wait until October to fly from Idaho, when ticket prices are also cheap, with an average price of $489.

Can stopping save me money on Idaho to Spain flights?

You could potentially save up to 67% on your flight if you consider stops on a Idaho to Spain flight.

Cheap Idaho to Spain flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Idaho to Spain

Fastest flight time	15h 44m
Direct flights	None

The fastest flight from Idaho to Spain takes 15h 44m

There are no direct flights from Idaho to Spain. There are no popular flight routes from Idaho to Spain.

Search flight deals

Frequently asked questions about flying from Idaho to Spain

When did momondo last update prices for flights from Idaho to Spain?
Prices for flights from Idaho to Spain refresh daily.
How many operators does momondo search for flights from Idaho to Spain?
There are 5 operators available for flights from Idaho to Spain as of July 2026.
How old do you have to be to fly from Idaho to Spain?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Idaho to Spain.
What documentation or ID do you need to fly to Spain?
The required travel and health documents for your Spain trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Spain. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Idaho to Spain

Compare and see reviews for airlines that fly from Idaho to Spain with momondo

Airline	Rating	Free Cancellation	Price
Iberia	PriceFrom $483	Free Cancellation	Rating 7.0 3,253 reviews	Search Iberia flights
United Airlines	PriceFrom $493	Free Cancellation	Rating 7.4 9,986 reviews	Search United Airlines flights
American Airlines	PriceFrom $541	Free Cancellation	Rating 7.1 11,811 reviews	Search American Airlines flights
Delta	PriceFrom $599	Free Cancellation	Rating 7.8 8,467 reviews	Search Delta flights
Air Canada	PriceFrom $856	Free Cancellation	Rating 7.1 11,335 reviews	Search Air Canada flights

Why use momondo?

Why should I use momondo to find a flight deal from Idaho to Spain?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Spain from Idaho.

Can I find flights from Idaho to Spain with flexible booking policies on momondo?

momondo does allow users to show only those flights to Spain from Idaho which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Idaho to Spain?

Once you have performed a search for Idaho to Spain flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Idaho to Spain right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Idaho to Spain flights. All you need is a valid email address and we will do the rest; it is that quick and easy.