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Cheap flights from Idaho to Barcelona from $356

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho to Barcelona departing on 8/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Idaho to Barcelona

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:26 pm - 8:20 pm
BOI
-
BCN
17h 54m
2 stops
American Airlines Logo
10:45 am - 10:54 pm
BCN
-
BOI
20h 09m
1 stop
$483American Airlines
Sun, Apr 12 - Wed, Apr 22
American Airlines Logo
1:29 pm - 10:55 am
BOI
-
BCN
13h 26m
1 stop
American Airlines Logo
10:45 am - 10:54 pm
BCN
-
BOI
20h 09m
1 stop
$487American Airlines
Sun, Apr 12 - Wed, Apr 22
American Airlines Logo
6:26 pm - 8:20 pm
BOI
-
BCN
17h 54m
2 stops
American Airlines Logo
10:30 am - 11:41 pm
BCN
-
BOI
21h 11m
2 stops
$488American Airlines
Sun, Apr 12 - Wed, Apr 22
United Airlines Logo
5:00 am - 8:20 am
BOI
-
BCN
19h 20m
2 stops
United Airlines Logo
3:15 pm - 10:45 pm
BCN
-
BOI
15h 30m
1 stop
$537United Airlines
Tue, Apr 21 - Fri, May 1
United Airlines Logo
5:00 am - 8:20 am
BOI
-
BCN
19h 20m
2 stops
United Airlines Logo
12:15 pm - 3:26 pm
BCN
-
BOI
35h 11m
2 stops
$571United Airlines
Tue, Apr 21 - Fri, May 1
Multiple Airlines Logo
6:15 am - 9:20 am
BOI
-
BCN
19h 05m
3 stops
Multiple Airlines Logo
1:15 pm - 11:06 am
BCN
-
BOI
29h 51m
2 stops
$608Multiple Airlines
Sun, Apr 12 - Wed, Apr 22
Air Canada Logo
7:10 am - 8:00 am
GEG
-
BCN
39h 50m
2 stops
Air Canada Logo
12:15 pm - 6:51 pm
BCN
-
GEG
39h 36m
2 stops
$669Air Canada
Tue, Apr 14 - Tue, Apr 21
Delta Logo
12:36 pm - 12:50 pm
GEG
-
BCN
15h 14m
1 stop
Delta Logo
11:00 am - 9:31 pm
BCN
-
GEG
19h 31m
1 stop
$686Delta
Mon, Apr 13 - Tue, Apr 21
Delta Logo
12:36 pm - 12:50 pm
GEG
-
BCN
15h 14m
1 stop
Delta Logo
11:00 am - 9:05 pm
BCN
-
GEG
19h 05m
2 stops
$690Delta
Mon, Apr 13 - Tue, Apr 21
Multiple Airlines Logo
12:36 pm - 12:50 pm
GEG
-
BCN
15h 14m
1 stop
Multiple Airlines Logo
11:00 am - 9:31 pm
BCN
-
GEG
19h 31m
1 stop
$735Multiple Airlines
Wed, Apr 15 - Wed, Apr 22

Air Canada flights from Idaho to Barcelona-El Prat Airport

Our best Air Canada deals on Idaho to Barcelona-El Prat Airport flight tickets
Air Canada
Apr 14
GEG7:10 amSpokane
39h 50m
2 stops
BCN8:00 amBarcelona-El Prat
Apr 21
BCN12:15 pmBarcelona-El Prat
39h 36m
2 stops
GEG6:51 pmSpokane
$669
Air Canada
Apr 6
BOI4:05 pmBoise Air Term. Gowen Fld
57h 15m
2 stops
BCN9:20 amBarcelona-El Prat
Apr 30
BCN12:15 pmBarcelona-El Prat
29h 39m
2 stops
BOI9:54 amBoise Air Term. Gowen Fld
$688
Air Canada
Aug 9
BOI5:00 amBoise Air Term. Gowen Fld
19h 00m
2 stops
BCN8:00 amBarcelona-El Prat
Aug 20
BCN1:15 pmBarcelona-El Prat
40h 01m
2 stops
BOI9:16 pmBoise Air Term. Gowen Fld
$829

Delta flights from Idaho to Barcelona-El Prat Airport

Our best Delta deals on Idaho to Barcelona-El Prat Airport flight tickets
Delta
Apr 13
GEG12:36 pmSpokane
15h 14m
1 stop
BCN12:50 pmBarcelona-El Prat
Apr 21
BCN11:00 amBarcelona-El Prat
19h 31m
1 stop
GEG9:31 pmSpokane
$686
Delta
Apr 13
GEG12:36 pmSpokane
15h 14m
1 stop
BCN12:50 pmBarcelona-El Prat
Apr 21
BCN11:00 amBarcelona-El Prat
19h 05m
2 stops
GEG9:05 pmSpokane
$690
Delta
Apr 13
GEG1:07 pmSpokane
19h 03m
2 stops
BCN5:10 pmBarcelona-El Prat
Apr 22
BCN6:20 amBarcelona-El Prat
23h 45m
2 stops
GEG9:05 pmSpokane
$695

momondo Fare Finder

 
Customize your flight search to find flights from Idaho to Barcelona-El Prat Airport 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, momondo users made 832,500 searches. Data last updated February 23, 2026.
Use the filters below to find and compare flights from Idaho to Barcelona-El Prat Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sun 4/12

6:26 pm-8:20 pm

2 stops17h 54m

Barcelona-El Prat

Wed 4/22

10:45 am-10:54 pm

1 stop20h 09m

$483

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sun 4/12

1:29 pm-10:55 am

1 stop13h 26m

Barcelona-El Prat

Wed 4/22

10:45 am-10:54 pm

1 stop20h 09m

$487

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sun 4/12

6:26 pm-8:20 pm

2 stops17h 54m

Barcelona-El Prat

Wed 4/22

10:30 am-11:41 pm

2 stops21h 11m

$488

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Tue 4/21

5:00 am-8:20 am

2 stops19h 20m

Barcelona-El Prat

Fri 5/1

3:15 pm-10:45 pm

1 stop15h 30m

$537

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Tue 4/21

5:00 am-8:20 am

2 stops19h 20m

Barcelona-El Prat

Fri 5/1

12:15 pm-3:26 pm

2 stops35h 11m

$571

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sun 4/12

6:15 am-9:20 am

3 stops19h 05m

Barcelona-El Prat

Wed 4/22

1:15 pm-11:06 am

2 stops29h 51m

$608

SpokaneBarcelona

GEG - BCN

GEGBCN

Spokane

Tue 4/14

7:10 am-8:00 am

2 stops39h 50m

Barcelona-El Prat

Tue 4/21

12:15 pm-6:51 pm

2 stops39h 36m

$669

SpokaneBarcelona

GEG - BCN

GEGBCN

Spokane

Mon 4/13

12:36 pm-12:50 pm

1 stop15h 14m

Barcelona-El Prat

Tue 4/21

11:00 am-9:31 pm

1 stop19h 31m

$686

SpokaneBarcelona

GEG - BCN

GEGBCN

Spokane

Mon 4/13

12:36 pm-12:50 pm

1 stop15h 14m

Barcelona-El Prat

Tue 4/21

11:00 am-9:05 pm

2 stops19h 05m

$690

SpokaneBarcelona

GEG - BCN

GEGBCN

Spokane

Wed 4/15

12:36 pm-12:50 pm

1 stop15h 14m

Barcelona-El Prat

Wed 4/22

11:00 am-9:31 pm

1 stop19h 31m

$735

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Idaho to Barcelona-El Prat Airport

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

What is the cheapest month to fly to Barcelona-El Prat Airport?

The cheapest month to fly to Barcelona-El Prat Airport from Idaho is in February. Flight prices, which tend to average around $484, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Barcelona-El Prat Airport from Idaho during January instead. Flights to Barcelona-El Prat Airport in January, while not as cheap as those in February, still average around $583.

Can stopping save me money on Idaho to Barcelona-El Prat Airport flights?

You could potentially save up to 60% on your flight if you consider stops on a Idaho to Barcelona-El Prat Airport flight.

Cheap Idaho to Barcelona-El Prat Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Idaho to Barcelona-El Prat Airport

Fastest flight time

16h 35m

Direct flights

None
The fastest flight from Idaho to Barcelona-El Prat Airport takes 16h 35m
There are no direct flights from Idaho to Barcelona-El Prat Airport. There are no popular flight routes from Idaho to Barcelona-El Prat Airport.
Search flight deals

  • When did momondo last update prices for flights from Idaho to Barcelona-El Prat Airport?

    Prices for flights from Idaho to Barcelona-El Prat Airport were last updated today.

  • How many operators does momondo search for flights from Idaho to Barcelona-El Prat Airport?

  • How old do you have to be to fly from Idaho to Barcelona-El Prat Airport?

    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 Barcelona-El Prat Airport.

  • What documentation or ID do you need to fly to Barcelona-El Prat Airport?

    The necessary travel and health documents for your Barcelona-El Prat Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Idaho to Barcelona-El Prat Airport

Compare and see reviews for airlines that fly from Idaho to Barcelona-El Prat Airport with momondo
Airline
Rating
Free Cancellation
Price
IberiaPriceFrom $483Free CancellationRating
7.0
3,123 reviews
Search Iberia flights
United AirlinesPriceFrom $498Free CancellationRating
7.4
9,342 reviews
Search United Airlines flights
DeltaPriceFrom $599Free CancellationRating
7.9
8,236 reviews
Search Delta flights
American AirlinesPriceFrom $634Free CancellationRating
7.2
11,341 reviews
Search American Airlines flights
Air CanadaPriceFrom $651Free CancellationRating
7.1
10,742 reviews
Search Air Canada flights

Traveling to a place near Barcelona?

Book flights to Barcelona if you plan to visit one of these locations
Lloret de Mar
Sitges
Salou
Tossa de Mar
Tarragona
Castelldefels
El Prat de Llobregat
L'Hospitalet de Llobregat
Santa Susanna
Calella
Cadaques
Cambrils
Pals
Pineda de Mar
Empuriabrava
Roses
Badalona
Malgrat de Mar
Palafrugell
Tortosa

Why use momondo?

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

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 Barcelona from Idaho.

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

momondo does allow users to show only those flights to Barcelona 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 Barcelona?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Barcelona from Idaho.

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

If you are simply researching potential flights to Barcelona, momondo offers a useful price alert feature which will track prices for flights to Barcelona from Idaho and alert you when they change.

An easier way to manage your Barcelona-El Prat Airport trip

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