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

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

What airlines fly to Spain?

Delta, United Airlines and Iberia are the top three most popular airlines that fly to Spain from Idaho according to our data. Delta is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Spain. Keep in mind that there are 4 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 4 operators available for flights from Idaho to Spain as of October 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.

$461 Cheap Flights from Idaho to Spain in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Idaho to Spain

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 am - 9:35 amBOI Boise Air Term. Gowen Fld-BCN Barcelona-El Prat

18h 35m2 stops Denver Intl Montreal Pierre Elliott Trudeau Intl

1:15 pm - 9:16 pmBCN Barcelona-El Prat-BOI Boise Air Term. Gowen Fld

40h 01m2 stops Toronto Pearson Intl Denver Intl

$721United Airlines

Tue, Mar 2 - Fri, Mar 5

5:00 am - 9:35 amBOI Boise Air Term. Gowen Fld-BCN Barcelona-El Prat

20h 35m2 stops Denver Intl Montreal Pierre Elliott Trudeau Intl

1:15 pm - 9:16 pmBCN Barcelona-El Prat-BOI Boise Air Term. Gowen Fld

40h 01m2 stops Toronto Pearson Intl Denver Intl

$721Air Canada

Mon, Mar 8 - Fri, Mar 12

5:22 pm - 8:35 amBOI Boise Air Term. Gowen Fld-BCN Barcelona-El Prat

31h 13m2 stops Denver Intl Montreal Pierre Elliott Trudeau Intl

12:35 pm - 11:16 pmBCN Barcelona-El Prat-BOI Boise Air Term. Gowen Fld

41h 41m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$722Air Canada

Sat, Mar 13 - Wed, Mar 24

5:22 pm - 11:10 pmBOI Boise Air Term. Gowen Fld-BIO Bilbao

21h 48m2 stops Denver Intl Munich Franz Josef Strauss

6:45 am - 11:59 pmBIO Bilbao-BOI Boise Air Term. Gowen Fld

25h 14m2 stops Frankfurt am Main San Francisco

$724United Airlines

Mon, Mar 1 - Fri, Mar 5

7:00 am - 9:10 amBOI Boise Air Term. Gowen Fld-BCN Barcelona-El Prat

18h 10m1 stop Dallas/Fort Worth

8:50 am - 10:57 pmBCN Barcelona-El Prat-BOI Boise Air Term. Gowen Fld

22h 07m2 stops Madrid Barajas Dallas/Fort Worth

$745Iberia

Mon, Mar 8 - Fri, Mar 12

1:35 pm - 5:05 pmBOI Boise Air Term. Gowen Fld-MAD Madrid Barajas

19h 30m2 stops Dallas/Fort Worth London Heathrow

12:40 pm - 1:08 pmMAD Madrid Barajas-BOI Boise Air Term. Gowen Fld

32h 28m1 stop Dallas/Fort Worth

$778American Airlines

Tue, Feb 9 - Tue, Feb 23

1:35 pm - 5:05 pmBOI Boise Air Term. Gowen Fld-MAD Madrid Barajas

19h 30m2 stops Dallas/Fort Worth London Heathrow

11:00 am - 12:07 amMAD Madrid Barajas-BOI Boise Air Term. Gowen Fld

21h 07m2 stops New York John F Kennedy Intl Chicago O'Hare Intl

$778American Airlines

Tue, Feb 9 - Tue, Feb 23

6:44 am - 8:05 amBOI Boise Air Term. Gowen Fld-MAD Madrid Barajas

17h 21m1 stop Dallas/Fort Worth

9:00 pm - 10:46 pmMAD Madrid Barajas-BOI Boise Air Term. Gowen Fld

33h 46m2 stops London Heathrow Dallas/Fort Worth

$797Iberia

Wed, Nov 25 - Wed, Dec 2

6:40 am - 8:40 amBOI Boise Air Term. Gowen Fld-BCN Barcelona-El Prat

18h 00m2 stops Seattle/Tacoma Intl Atlanta Hartsfield-Jackson

10:35 am - 12:24 pmBCN Barcelona-El Prat-BOI Boise Air Term. Gowen Fld

33h 49m2 stops New York John F Kennedy Intl Salt Lake City

$816Delta

Wed, Nov 11 - Thu, Nov 26

6:40 am - 3:20 pmBOI Boise Air Term. Gowen Fld-MAD Madrid Barajas

24h 40m2 stops Seattle/Tacoma Intl Paris Charles de Gaulle

9:20 am - 12:24 pmMAD Madrid Barajas-BOI Boise Air Term. Gowen Fld

35h 04m2 stops New York John F Kennedy Intl Salt Lake City

$885Delta

Wed, Nov 18 - Thu, Nov 26

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KLM flights from Idaho to Spain

Our best KLM deals on Idaho to Spain flight tickets

KLM

Nov 18

BOI1:19 pmBoise Air Term. Gowen Fld

16h 21m

2 stops

MAD1:40 pmMadrid Barajas

Nov 27

MAD7:00 amMadrid Barajas

21h 23m

2 stops

BOI8:23 pmBoise Air Term. Gowen Fld

$808

KLM

Nov 26

BOI2:26 pmBoise Air Term. Gowen Fld

48h 39m

2 stops

PMI11:05 pmPalma de Mallorca Son Sant Joan

Dec 3

PMI7:35 pmPalma de Mallorca Son Sant Joan

29h 41m

2 stops

BOI5:16 pmBoise Air Term. Gowen Fld

$822

KLM

Nov 27

BOI3:00 pmBoise Air Term. Gowen Fld

20h 00m

2 stops

LPA6:00 pmLas Palmas de Gran Canaria

Dec 4

LPA6:40 pmLas Palmas de Gran Canaria

29h 36m

2 stops

BOI5:16 pmBoise Air Term. Gowen Fld

$1,030

Alaska Airlines flights from Idaho to Spain

Our best Alaska Airlines deals on Idaho to Spain flight tickets

Alaska Airlines

Nov 25

BOI2:00 pmBoise Air Term. Gowen Fld

22h 50m

2 stops

MAD8:50 pmMadrid Barajas

Dec 2

MAD1:20 pmMadrid Barajas

40h 54m

2 stops

BOI10:14 pmBoise Air Term. Gowen Fld

$838

Alaska Airlines

Nov 2

BOI1:53 pmBoise Air Term. Gowen Fld

21h 27m

2 stops

MAD7:20 pmMadrid Barajas

Nov 10

MAD1:20 pmMadrid Barajas

41h 00m

2 stops

BOI10:20 pmBoise Air Term. Gowen Fld

$888

Alaska Airlines

Mar 19

BOI8:47 amBoise Air Term. Gowen Fld

30h 23m

2 stops

MAD10:10 pmMadrid Barajas

Mar 28

MAD11:30 amMadrid Barajas

18h 50m

2 stops

BOI10:20 pmBoise Air Term. Gowen Fld

$974

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseBarcelona

BOI Boise Air Term. Gowen Fld - BCN Barcelona-El Prat

BOIBCN

Boise Air Term. Gowen Fld

Tue 3/2

7:00 am-9:35 am

2 stops18h 35m

Barcelona-El Prat

Fri 3/5

1:15 pm-9:16 pm

2 stops40h 01m

$721

BoiseBarcelona

BOI Boise Air Term. Gowen Fld - BCN Barcelona-El Prat

BOIBCN

Boise Air Term. Gowen Fld

Mon 3/8

5:00 am-9:35 am

2 stops20h 35m

Barcelona-El Prat

Fri 3/12

1:15 pm-9:16 pm

2 stops40h 01m

$721

BoiseBarcelona

BOI Boise Air Term. Gowen Fld - BCN Barcelona-El Prat

BOIBCN

Boise Air Term. Gowen Fld

Sat 3/13

5:22 pm-8:35 am

2 stops31h 13m

Barcelona-El Prat

Wed 3/24

12:35 pm-11:16 pm

2 stops41h 41m

$722

BoiseBilbao

BOI Boise Air Term. Gowen Fld - BIO Bilbao

BOIBIO

Boise Air Term. Gowen Fld

Mon 3/1

5:22 pm-11:10 pm

2 stops21h 48m

Bilbao

Fri 3/5

6:45 am-11:59 pm

2 stops25h 14m

$724

Quickest round-trip

BoiseBarcelona

BOI Boise Air Term. Gowen Fld - BCN Barcelona-El Prat

BOIBCN

Boise Air Term. Gowen Fld

Mon 3/8

7:00 am-9:10 am

1 stop18h 10m

Barcelona-El Prat

Fri 3/12

8:50 am-10:57 pm

2 stops22h 07m

$745

BoiseMadrid

BOI Boise Air Term. Gowen Fld - MAD Madrid Barajas

BOIMAD

Boise Air Term. Gowen Fld

Tue 2/9

1:35 pm-5:05 pm

2 stops19h 30m

Madrid Barajas

Tue 2/23

12:40 pm-1:08 pm

1 stop32h 28m

$778

BoiseMadrid

BOI Boise Air Term. Gowen Fld - MAD Madrid Barajas

BOIMAD

Boise Air Term. Gowen Fld

Tue 2/9

1:35 pm-5:05 pm

2 stops19h 30m

Madrid Barajas

Tue 2/23

11:00 am-12:07 am

2 stops21h 07m

$778

BoiseMadrid

BOI Boise Air Term. Gowen Fld - MAD Madrid Barajas

BOIMAD

Boise Air Term. Gowen Fld

Wed 11/25

6:44 am-8:05 am

1 stop17h 21m

Madrid Barajas

Wed 12/2

9:00 pm-10:46 pm

2 stops33h 46m

$797

BoiseBarcelona

BOI Boise Air Term. Gowen Fld - BCN Barcelona-El Prat

BOIBCN

Boise Air Term. Gowen Fld

Wed 11/11

6:40 am-8:40 am

2 stops18h 00m

Barcelona-El Prat

Thu 11/26

10:35 am-12:24 pm

2 stops33h 49m

$816

BoiseMadrid

BOI Boise Air Term. Gowen Fld - MAD Madrid Barajas

BOIMAD

Boise Air Term. Gowen Fld

Wed 11/18

6:40 am-3:20 pm

2 stops24h 40m

Madrid Barajas

Thu 11/26

9:20 am-12:24 pm

2 stops35h 04m

$885

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 April to fly from Idaho, when ticket prices are also cheap, with an average price of $743.

Can stopping save me money on Idaho to Spain flights?

You could potentially save up to 50% 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

Best Price Found	$461
Fastest flight time	14h 05m
Direct flights	None

The best one-way flight to Spain from Idaho in the past 72 hours is $461. The best round-trip flight deal from Idaho to Spain found on momondo in the last 72 hours is $721.

The fastest flight from Idaho to Spain takes 14h 05m

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 4 operators available for flights from Idaho to Spain as of October 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 3,245 reviews	Search Iberia flights
American Airlines	PriceFrom $489	Free Cancellation	Rating 7.0 12,169 reviews	Search American Airlines flights
United Airlines	PriceFrom $498	Free Cancellation	Rating 7.4 10,364 reviews	Search United Airlines flights
Delta	PriceFrom $528	Free Cancellation	Rating 7.8 8,652 reviews	Search Delta 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.