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 35% of people opting to fly with this airline when traveling to Spain. Keep in mind that there are 7 different airlines that fly to Spain on a routine basis, so you have a few additional options to choose from.

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

United Airlines, American Airlines, and Lufthansa are the most popular carriers operating 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 7 operators available for flights from Idaho to Spain as of November 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.

$399 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

Enter your travel dates to find the best prices.

7:38 pm - 8:00 amGEG-MAD

27h 22m2 stops

10:00 am - 12:11 amMAD-GEG

23h 11m2 stops

$443Delta

Find Deal

Mon, Dec 1 - Fri, Dec 12

7:38 pm - 8:00 amGEG-MAD

27h 22m2 stops

11:15 am - 12:02 pmMAD-GEG

33h 47m1 stop

$448Delta

Find Deal

Mon, Dec 1 - Fri, Dec 12

1:12 pm - 9:15 amGEG-MAD

35h 03m1 stop

7:05 am - 8:10 pmMAD-GEG

22h 05m2 stops

$471KLM

Find Deal

Sun, Dec 7 - Sun, Dec 14

7:00 am - 8:50 amBOI-BCN

17h 50m1 stop

10:40 am - 10:36 pmBCN-BOI

19h 56m1 stop

$473Finnair

Find Deal

Fri, Feb 20 - Fri, Feb 27

6:00 am - 11:55 amGEG-MAD

20h 55m2 stops

1:00 pm - 6:49 pmMAD-GEG

38h 49m1 stop

$477American Airlines

Find Deal

Mon, Jan 12 - Fri, Jan 30

3:21 pm - 5:55 pmBOI-BCN

18h 34m2 stops

10:40 am - 7:25 pmBCN-BOI

16h 45m1 stop

$480American Airlines

Find Deal

Sat, Jan 24 - Mon, Feb 2

5:25 am - 8:00 amGEG-MAD

17h 35m2 stops

7:25 am - 8:59 pmMAD-GEG

22h 34m2 stops

$480Multiple Airlines

Find Deal

Tue, Dec 9 - Tue, Dec 16

5:17 am - 9:25 amGEG-MAD

19h 08m1 stop

12:00 pm - 9:43 pmMAD-GEG

18h 43m1 stop

$481Multiple Airlines

Find Deal

Sun, Dec 7 - Mon, Dec 22

2:04 pm - 8:40 amBOI-BCN

34h 36m1 stop

6:00 am - 10:05 pmBCN-BOI

24h 05m2 stops

$570KLM

Find Deal

Tue, Dec 9 - Tue, Dec 16

7:31 am - 9:05 amBOI-MAD

17h 34m1 stop

12:40 pm - 9:07 pmMAD-BOI

16h 27m1 stop

$739Finnair

Find Deal

Tue, Apr 7 - Tue, Apr 21

Delta flights from Idaho to Spain

Our best Delta deals on Idaho to Spain flight tickets

Delta

Dec 1

GEG7:38 pmSpokane

27h 22m

2 stops

MAD8:00 amMadrid Barajas

Dec 12

MAD10:00 amMadrid Barajas

23h 11m

2 stops

GEG12:11 amSpokane

$443

Find similar

Delta

Dec 1

GEG7:38 pmSpokane

27h 22m

2 stops

MAD8:00 amMadrid Barajas

Dec 12

MAD11:15 amMadrid Barajas

33h 47m

1 stop

GEG12:02 pmSpokane

$448

Find similar

Delta

Dec 9

BOI11:10 amBoise Air Term. Gowen Fld

21h 55m

2 stops

BCN5:05 pmBarcelona-El Prat

Dec 16

BCN10:15 amBarcelona-El Prat

32h 49m

2 stops

BOI11:04 amBoise Air Term. Gowen Fld

$457

Find similar

KLM flights from Idaho to Spain

Our best KLM deals on Idaho to Spain flight tickets

KLM

Dec 7

GEG1:12 pmSpokane

35h 03m

1 stop

MAD9:15 amMadrid Barajas

Dec 14

MAD7:05 amMadrid Barajas

22h 05m

2 stops

GEG8:10 pmSpokane

$471

Find similar

KLM

Dec 9

BOI2:04 pmBoise Air Term. Gowen Fld

34h 36m

1 stop

BCN8:40 amBarcelona-El Prat

Dec 16

BCN6:00 amBarcelona-El Prat

24h 05m

2 stops

BOI10:05 pmBoise Air Term. Gowen Fld

$570

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Mon 12/1

7:38 pm-8:00 am

2 stops27h 22m

Madrid Barajas

Fri 12/12

10:00 am-12:11 am

2 stops23h 11m

$443

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Mon 12/1

7:38 pm-8:00 am

2 stops27h 22m

Madrid Barajas

Fri 12/12

11:15 am-12:02 pm

1 stop33h 47m

$448

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Sun 12/7

1:12 pm-9:15 am

1 stop35h 03m

Madrid Barajas

Sun 12/14

7:05 am-8:10 pm

2 stops22h 05m

$471

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Fri 2/20

7:00 am-8:50 am

1 stop17h 50m

Barcelona-El Prat

Fri 2/27

10:40 am-10:36 pm

1 stop19h 56m

$473

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Mon 1/12

6:00 am-11:55 am

2 stops20h 55m

Madrid Barajas

Fri 1/30

1:00 pm-6:49 pm

1 stop38h 49m

$477

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sat 1/24

3:21 pm-5:55 pm

2 stops18h 34m

Barcelona-El Prat

Mon 2/2

10:40 am-7:25 pm

1 stop16h 45m

$480

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Tue 12/9

5:25 am-8:00 am

2 stops17h 35m

Madrid Barajas

Tue 12/16

7:25 am-8:59 pm

2 stops22h 34m

$480

SpokaneMadrid

GEG - MAD

GEGMAD

Spokane

Sun 12/7

5:17 am-9:25 am

1 stop19h 08m

Madrid Barajas

Mon 12/22

12:00 pm-9:43 pm

1 stop18h 43m

$481

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Tue 12/9

2:04 pm-8:40 am

1 stop34h 36m

Barcelona-El Prat

Tue 12/16

6:00 am-10:05 pm

2 stops24h 05m

$570

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Tue 4/7

7:31 am-9:05 am

1 stop17h 34m

Madrid Barajas

Tue 4/21

12:40 pm-9:07 pm

1 stop16h 27m

$739

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 November, then you should wait until February to fly from Idaho, when ticket prices are also cheap, with an average price of $634.

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 7 operators available for flights from Idaho to Spain as of November 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 $493	Free Cancellation	Rating 7.4 9,012 reviews	Search United Airlines flights
Delta	PriceFrom $550	Free Cancellation	Rating 7.9 8,007 reviews	Search Delta flights
Iberia	PriceFrom $586	Free Cancellation	Rating 7.0 3,008 reviews	Search Iberia flights
American Airlines	PriceFrom $602	Free Cancellation	Rating 7.2 11,045 reviews	Search American Airlines flights
Finnair	PriceFrom $637	Free Cancellation	Rating 7.6 1,335 reviews	Search Finnair flights
Air Canada	PriceFrom $651	Free Cancellation	Rating 7.1 10,436 reviews	Search Air Canada flights
KLM	PriceFrom $912	Free Cancellation	Rating 7.7 1,410 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.