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Cheap flights from Idaho to Barcelona from $407

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 8/15. 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
1 adult, Economy, 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.
Multiple Airlines Logo
1:58 pm - 6:35 pm
GEG
-
BCN
19h 37m
2 stops
Multiple Airlines Logo
12:20 pm - 10:57 pm
BCN
-
GEG
19h 37m
2 stops
$770Multiple Airlines
Wed, Sep 30 - Wed, Oct 21
American Airlines Logo
2:55 pm - 5:35 pm
BOI
-
BCN
18h 40m
2 stops
American Airlines Logo
10:45 am - 10:17 pm
BCN
-
BOI
19h 32m
1 stop
$832American Airlines
Mon, Aug 10 - Fri, Aug 21
United Airlines Logo
12:30 pm - 2:20 pm
GEG
-
BCN
16h 50m
1 stop
United Airlines Logo
12:15 pm - 9:09 pm
BCN
-
GEG
41h 54m
2 stops
$833United Airlines
Wed, Sep 30 - Wed, Oct 21
Iberia Logo
6:44 am - 10:10 am
BOI
-
BCN
19h 26m
1 stop
Iberia Logo
10:45 am - 10:17 pm
BCN
-
BOI
19h 32m
1 stop
$836Iberia
Sun, Aug 9 - Thu, Aug 20
American Airlines Logo
1:14 pm - 3:40 pm
BOI
-
BCN
18h 26m
2 stops
American Airlines Logo
10:30 am - 11:32 pm
BCN
-
BOI
21h 02m
2 stops
$837American Airlines
Tue, Sep 8 - Wed, Sep 16
Multiple Airlines Logo
6:44 am - 10:10 am
BOI
-
BCN
19h 26m
1 stop
Multiple Airlines Logo
3:35 pm - 11:26 am
BCN
-
BOI
27h 51m
2 stops
$841Multiple Airlines
Mon, Aug 10 - Fri, Aug 21
American Airlines Logo
12:10 pm - 2:25 pm
BOI
-
BCN
18h 15m
2 stops
American Airlines Logo
10:15 am - 10:17 pm
BCN
-
BOI
20h 02m
2 stops
$847American Airlines
Mon, Aug 10 - Fri, Aug 21
United Airlines Logo
12:30 pm - 2:20 pm
GEG
-
BCN
16h 50m
1 stop
United Airlines Logo
4:10 pm - 11:38 pm
BCN
-
GEG
16h 28m
1 stop
$853United Airlines
Wed, Sep 30 - Wed, Oct 21
Lufthansa Logo
8:25 am - 2:55 pm
BOI
-
BCN
22h 30m
2 stops
Lufthansa Logo
7:55 am - 9:25 pm
BCN
-
BOI
21h 30m
2 stops
$887Lufthansa
Thu, Aug 6 - Fri, Aug 21
Iberia Logo
6:00 am - 10:10 am
GEG
-
BCN
19h 10m
1 stop
Iberia Logo
10:45 am - 8:47 pm
BCN
-
GEG
19h 02m
1 stop
$933Iberia
Thu, Sep 3 - Fri, Sep 11

Iberia flights from Idaho to Barcelona-El Prat Airport

Our best Iberia deals on Idaho to Barcelona-El Prat Airport flight tickets
Iberia
Aug 9
BOI6:44 amBoise Air Term. Gowen Fld
19h 26m
1 stop
BCN10:10 amBarcelona-El Prat
Aug 20
BCN10:45 amBarcelona-El Prat
19h 32m
1 stop
BOI10:17 pmBoise Air Term. Gowen Fld
$836
Iberia
May 9
BOI1:53 pmBoise Air Term. Gowen Fld
48h 37m
2 stops
BCN10:30 pmBarcelona-El Prat
May 19
BCN12:30 pmBarcelona-El Prat
40h 37m
2 stops
BOI9:07 pmBoise Air Term. Gowen Fld
$901
Iberia
May 7
BOI1:41 pmBoise Air Term. Gowen Fld
35h 39m
2 stops
BCN9:20 amBarcelona-El Prat
May 14
BCN10:45 amBarcelona-El Prat
18h 22m
1 stop
BOI9:07 pmBoise Air Term. Gowen Fld
$927

Lufthansa flights from Idaho to Barcelona-El Prat Airport

Our best Lufthansa deals on Idaho to Barcelona-El Prat Airport flight tickets
Lufthansa
Aug 6
BOI8:25 amBoise Air Term. Gowen Fld
22h 30m
2 stops
BCN2:55 pmBarcelona-El Prat
Aug 21
BCN7:55 amBarcelona-El Prat
21h 30m
2 stops
BOI9:25 pmBoise Air Term. Gowen Fld
$887
Lufthansa
Apr 12
BOI10:35 amBoise Air Term. Gowen Fld
23h 20m
2 stops
BCN5:55 pmBarcelona-El Prat
Apr 22
BCN11:50 amBarcelona-El Prat
19h 12m
2 stops
BOI11:02 pmBoise Air Term. Gowen Fld
$907
Lufthansa
Aug 22
BOI2:44 pmBoise Air Term. Gowen Fld
16h 51m
2 stops
BCN3:35 pmBarcelona-El Prat
Aug 30
BCN7:55 amBarcelona-El Prat
17h 58m
2 stops
BOI5:53 pmBoise Air Term. Gowen Fld
$1,034

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 April 10, 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

Cheapest round-trip

SpokaneBarcelona

GEG - BCN

GEGBCN

Spokane

Wed 9/30

1:58 pm-6:35 pm

2 stops19h 37m

Barcelona-El Prat

Wed 10/21

12:20 pm-10:57 pm

2 stops19h 37m

$770

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Mon 8/10

2:55 pm-5:35 pm

2 stops18h 40m

Barcelona-El Prat

Fri 8/21

10:45 am-10:17 pm

1 stop19h 32m

$832

SpokaneBarcelona

GEG - BCN

GEGBCN

Spokane

Wed 9/30

12:30 pm-2:20 pm

1 stop16h 50m

Barcelona-El Prat

Wed 10/21

12:15 pm-9:09 pm

2 stops41h 54m

$833

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sun 8/9

6:44 am-10:10 am

1 stop19h 26m

Barcelona-El Prat

Thu 8/20

10:45 am-10:17 pm

1 stop19h 32m

$836

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Tue 9/8

1:14 pm-3:40 pm

2 stops18h 26m

Barcelona-El Prat

Wed 9/16

10:30 am-11:32 pm

2 stops21h 02m

$837

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Mon 8/10

6:44 am-10:10 am

1 stop19h 26m

Barcelona-El Prat

Fri 8/21

3:35 pm-11:26 am

2 stops27h 51m

$841

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Mon 8/10

12:10 pm-2:25 pm

2 stops18h 15m

Barcelona-El Prat

Fri 8/21

10:15 am-10:17 pm

2 stops20h 02m

$847
Quickest round-trip

SpokaneBarcelona

GEG - BCN

GEGBCN

Spokane

Wed 9/30

12:30 pm-2:20 pm

1 stop16h 50m

Barcelona-El Prat

Wed 10/21

4:10 pm-11:38 pm

1 stop16h 28m

$853

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Thu 8/6

8:25 am-2:55 pm

2 stops22h 30m

Barcelona-El Prat

Fri 8/21

7:55 am-9:25 pm

2 stops21h 30m

$887

SpokaneBarcelona

GEG - BCN

GEGBCN

Spokane

Thu 9/3

6:00 am-10:10 am

1 stop19h 10m

Barcelona-El Prat

Fri 9/11

10:45 am-8:47 pm

1 stop19h 02m

$933

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Barcelona from

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 69% 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

13h 26m

Direct flights

None
The fastest flight from Idaho to Barcelona-El Prat Airport takes 13h 26m
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

Frequently asked questions about flying from Idaho to Barcelona-El Prat Airport

  • 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
3,178 reviews
Search Iberia flights
United AirlinesPriceFrom $498Free CancellationRating
7.4
9,562 reviews
Search United Airlines flights
DeltaPriceFrom $599Free CancellationRating
7.9
8,402 reviews
Search Delta flights
American AirlinesPriceFrom $634Free CancellationRating
7.1
11,564 reviews
Search American Airlines flights
Air CanadaPriceFrom $651Free CancellationRating
7.1
10,915 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
Castelldefels
Tarragona
El Prat de Llobregat
L'Hospitalet de Llobregat
Calella
Cambrils
Santa Susanna
Cadaques
Badalona
Pals
Pineda de Mar
Roses
Empuriabrava
Palafrugell
Calella de Palafrugell
Malgrat de Mar

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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