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

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

What airlines fly to Spain?

United Airlines, Delta and American Airlines 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 33% of people opting to fly with this airline when traveling to Spain. Keep in mind that there are 6 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 6 operators available for flights from Idaho to Spain as of September 2025.

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.

$321 Cheap Flights from Idaho to Spain in 2025/26

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Find the cheapest flights from Idaho to Spain

Round-trip

One-way

Last minute

Cheap round-trip flights

12:51 pm - 8:05 amGEG-MAD

35h 14m1 stop

8:30 pm - 2:54 pmMAD-GEG

27h 24m2 stops

$533Multiple Airlines

Find Deal

Mon, Oct 27 - Wed, Nov 12

9:45 am - 11:30 amGEG-MAD

17h 45m2 stops

6:00 am - 3:48 pmMAD-GEG

18h 48m2 stops

$539Air France

Find Deal

Mon, Oct 27 - Wed, Nov 12

11:25 am - 1:10 pmGEG-BCN

16h 45m1 stop

1:35 pm - 11:31 amBCN-GEG

30h 56m2 stops

$560United Airlines

Find Deal

Tue, Nov 11 - Tue, Nov 18

6:20 am - 9:35 amBOI-BCN

19h 15m2 stops

1:35 pm - 1:25 pmBCN-BOI

31h 50m2 stops

$574Air Canada

Find Deal

Wed, Nov 5 - Wed, Nov 12

2:31 pm - 1:10 pmBOI-BCN

15h 39m2 stops

3:05 pm - 10:45 pmBCN-BOI

15h 40m1 stop

$583United Airlines

Find Deal

Wed, Oct 29 - Thu, Nov 13

5:25 am - 7:00 amBOI-BCN

18h 35m2 stops

10:15 am - 12:35 amBCN-BOI

22h 20m2 stops

$587Delta

Find Deal

Wed, Oct 29 - Thu, Nov 13

7:00 am - 6:15 amBOI-MAD

15h 15m1 stop

12:40 pm - 10:25 pmMAD-BOI

17h 45m1 stop

$587Iberia

Find Deal

Tue, Nov 18 - Tue, Dec 9

11:41 am - 5:20 pmBOI-BIO

21h 39m2 stops

7:25 am - 12:09 amBIO-BOI

24h 44m2 stops

$590Delta

Find Deal

Wed, Nov 5 - Fri, Nov 14

11:25 am - 8:00 amGEG-MAD

36h 35m3 stops

1:35 pm - 12:45 pmMAD-GEG

32h 10m3 stops

$603Air Canada

Find Deal

Mon, Oct 27 - Wed, Nov 12

6:00 am - 8:50 amGEG-BCN

17h 50m1 stop

10:40 am - 8:45 pmBCN-GEG

19h 05m1 stop

$786Iberia

Find Deal

Tue, Jan 13 - Fri, Jan 23

Iberia flights from Idaho to Spain

Our best Iberia deals on Idaho to Spain flight tickets

Iberia

Nov 18

BOI7:00 amBoise Air Term. Gowen Fld

15h 15m

1 stop

MAD6:15 amMadrid Barajas

Dec 9

MAD12:40 pmMadrid Barajas

17h 45m

1 stop

BOI10:25 pmBoise Air Term. Gowen Fld

$587

Find similar

Iberia

Jan 13

GEG6:00 amSpokane

17h 50m

1 stop

BCN8:50 amBarcelona-El Prat

Jan 23

BCN10:40 amBarcelona-El Prat

19h 05m

1 stop

GEG8:45 pmSpokane

$786

Find similar

Iberia

Jan 15

GEG6:00 amSpokane

17h 50m

1 stop

BCN8:50 amBarcelona-El Prat

Jan 23

BCN10:40 amBarcelona-El Prat

19h 05m

1 stop

GEG8:45 pmSpokane

$831

Find similar

American Airlines flights from Idaho to Spain

Our best American Airlines deals on Idaho to Spain flight tickets

American Airlines

Nov 10

BOI1:40 pmBoise Air Term. Gowen Fld

19h 15m

2 stops

MAD4:55 pmMadrid Barajas

Nov 19

MAD12:55 amMadrid Barajas

19h 39m

1 stop

BOI12:34 pmBoise Air Term. Gowen Fld

$591

Find similar

American Airlines

Nov 6

GEG1:14 pmSpokane

18h 41m

2 stops

MAD4:55 pmMadrid Barajas

Nov 13

MAD12:40 pmMadrid Barajas

17h 15m

1 stop

GEG8:55 pmSpokane

$641

Find similar

American Airlines

Nov 28

JAC10:00 amJackson Hole

15h 25m

1 stop

MAD9:25 amMadrid Barajas

Dec 4

MAD12:40 pmMadrid Barajas

31h 34m

1 stop

JAC12:14 pmJackson Hole

$643

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Mon 10/27

12:51 pm-8:05 am

1 stop35h 14m

Madrid Barajas

Wed 11/12

8:30 pm-2:54 pm

2 stops27h 24m

$533

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Mon 10/27

9:45 am-11:30 am

2 stops17h 45m

Madrid Barajas

Wed 11/12

6:00 am-3:48 pm

2 stops18h 48m

$539

SpokaneBarcelona

GEG - BCN

GEGBCN

Spokane

Tue 11/11

11:25 am-1:10 pm

1 stop16h 45m

Barcelona-El Prat

Tue 11/18

1:35 pm-11:31 am

2 stops30h 56m

$560

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Wed 11/5

6:20 am-9:35 am

2 stops19h 15m

Barcelona-El Prat

Wed 11/12

1:35 pm-1:25 pm

2 stops31h 50m

$574

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Wed 10/29

2:31 pm-1:10 pm

2 stops15h 39m

Barcelona-El Prat

Thu 11/13

3:05 pm-10:45 pm

1 stop15h 40m

$583

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Wed 10/29

5:25 am-7:00 am

2 stops18h 35m

Barcelona-El Prat

Thu 11/13

10:15 am-12:35 am

2 stops22h 20m

$587

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Tue 11/18

7:00 am-6:15 am

1 stop15h 15m

Madrid Barajas

Tue 12/9

12:40 pm-10:25 pm

1 stop17h 45m

$587

BoiseBilbao

BOI - BIO

BOIBIO

Boise Air Term. Gowen Fld

Wed 11/5

11:41 am-5:20 pm

2 stops21h 39m

Bilbao

Fri 11/14

7:25 am-12:09 am

2 stops24h 44m

$590

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Mon 10/27

11:25 am-8:00 am

3 stops36h 35m

Madrid Barajas

Wed 11/12

1:35 pm-12:45 pm

3 stops32h 10m

$603

SpokaneBarcelona

GEG - BCN

GEGBCN

Spokane

Tue 1/13

6:00 am-8:50 am

1 stop17h 50m

Barcelona-El Prat

Fri 1/23

10:40 am-8:45 pm

1 stop19h 05m

$786

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 November to fly from Idaho, when ticket prices are also cheap, with an average price of $651.

What is the cheapest day to depart on your flight to Spain?

The cheapest day to depart from Idaho to Spain is on a Sunday when prices can be found for as low as $813. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Idaho to Spain for around $1,459.

What is the cheapest time of day to depart on your flight to Spain?

Flying to Spain from Idaho in the evening is the least expensive time of day to depart. momondo users have found prices as low as $842 when looking at flights departing in the evening. In contrast, the most expensive time of day to depart to Spain is in the morning when prices are around $1,010.

Cheap Idaho to Spain flight deals and tips

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

Direct flights	None

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

Search flight deals

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 6 operators available for flights from Idaho to Spain as of September 2025.
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
United Airlines	PriceFrom $552	Free Cancellation	Rating 7.4 8,922 reviews	Search United Airlines flights
Iberia	PriceFrom $586	Free Cancellation	Rating 7.0 2,938 reviews	Search Iberia flights
American Airlines	PriceFrom $591	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Delta	PriceFrom $607	Free Cancellation	Rating 7.9 7,971 reviews	Search Delta flights
Finnair	PriceFrom $637	Free Cancellation	Rating 7.6 1,326 reviews	Search Finnair flights
KLM	PriceFrom $664	Free Cancellation	Rating 7.8 1,387 reviews	Search KLM 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.