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Cheap flights from Idaho to Barcelona from $457

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho to Barcelona departing on 12/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
11:10 am - 5:05 pmBOI-BCN
21h 55m2 stops
Delta Logo
10:15 am - 11:04 amBCN-BOI
32h 49m2 stops
$457Delta
Find Deal
Tue, Dec 9 - Tue, Dec 16
Delta Logo
6:05 am - 5:05 pmGEG-BCN
26h 00m2 stops
Delta Logo
10:15 am - 10:39 amBCN-GEG
33h 24m2 stops
$457Delta
Find Deal
Tue, Dec 9 - Tue, Dec 16
Delta Logo
5:40 am - 8:00 amBOI-BCN
18h 20m2 stops
Delta Logo
10:55 am - 9:56 amBCN-BOI
31h 01m2 stops
$463Delta
Find Deal
Fri, Feb 20 - Fri, Feb 27
Finnair Logo
7:00 am - 8:50 amBOI-BCN
17h 50m1 stop
Finnair Logo
10:40 am - 10:36 pmBCN-BOI
19h 56m1 stop
$473Finnair
Find Deal
Fri, Feb 20 - Fri, Feb 27
American Airlines Logo
3:21 pm - 5:55 pmBOI-BCN
18h 34m2 stops
American Airlines Logo
10:40 am - 7:25 pmBCN-BOI
16h 45m1 stop
$480American Airlines
Find Deal
Sat, Jan 24 - Mon, Feb 2
Multiple Airlines Logo
7:00 am - 8:50 amBOI-BCN
17h 50m1 stop
Multiple Airlines Logo
10:40 am - 10:36 pmBCN-BOI
19h 56m1 stop
$484Multiple Airlines
Find Deal
Mon, Feb 16 - Sun, Feb 22
Multiple Airlines Logo
7:00 am - 7:55 pmBOI-BCN
28h 55m2 stops
Multiple Airlines Logo
10:40 am - 10:36 pmBCN-BOI
19h 56m1 stop
$492Multiple Airlines
Find Deal
Mon, Feb 16 - Sun, Feb 22
United Airlines Logo
4:10 pm - 5:35 pmGEG-BCN
16h 25m2 stops
United Airlines Logo
6:50 am - 8:59 pmBCN-GEG
23h 09m3 stops
$496United Airlines
Find Deal
Tue, Dec 9 - Tue, Dec 16
United Airlines Logo
6:25 am - 1:00 pmBOI-BCN
22h 35m2 stops
United Airlines Logo
9:55 am - 9:11 pmBCN-BOI
43h 16m2 stops
$526United Airlines
Find Deal
Mon, Feb 16 - Sun, Feb 22
American Airlines Logo
1:20 pm - 1:40 pmBOI-BCN
17h 20m2 stops
American Airlines Logo
10:40 am - 9:15 pmBCN-BOI
17h 35m1 stop
$680American Airlines
Find Deal
Mon, Mar 9 - Mon, Mar 16

Delta flights from Idaho to Barcelona-El Prat Airport

Our best Delta deals on Idaho to Barcelona-El Prat Airport flight tickets
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
Delta
Feb 20
BOI5:40 amBoise Air Term. Gowen Fld
18h 20m
2 stops
BCN8:00 amBarcelona-El Prat
Feb 27
BCN10:55 amBarcelona-El Prat
31h 01m
2 stops
BOI9:56 amBoise Air Term. Gowen Fld
$463
Find similar
Delta
Feb 20
BOI8:50 amBoise Air Term. Gowen Fld
24h 15m
2 stops
BCN5:05 pmBarcelona-El Prat
Feb 27
BCN10:55 amBarcelona-El Prat
33h 36m
1 stop
BOI12:31 pmBoise Air Term. Gowen Fld
$468
Find similar

American Airlines flights from Idaho to Barcelona-El Prat Airport

Our best American Airlines deals on Idaho to Barcelona-El Prat Airport flight tickets
American Airlines
Jan 24
BOI3:21 pmBoise Air Term. Gowen Fld
18h 34m
2 stops
BCN5:55 pmBarcelona-El Prat
Feb 2
BCN10:40 amBarcelona-El Prat
16h 45m
1 stop
BOI7:25 pmBoise Air Term. Gowen Fld
$480
Find similar
American Airlines
Mar 9
BOI1:20 pmBoise Air Term. Gowen Fld
17h 20m
2 stops
BCN1:40 pmBarcelona-El Prat
Mar 16
BCN10:40 amBarcelona-El Prat
17h 35m
1 stop
BOI9:15 pmBoise Air Term. Gowen Fld
$680
Find similar
American Airlines
Mar 27
GEG1:40 pmSpokane
24h 55m
2 stops
BCN10:35 pmBarcelona-El Prat
Mar 31
BCN10:45 amBarcelona-El Prat
18h 49m
1 stop
GEG8:34 pmSpokane
$1,244
Find similar

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 November 10, 2025.
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

Tue 12/9

11:10 am-5:05 pm

2 stops21h 55m

Barcelona-El Prat

Tue 12/16

10:15 am-11:04 am

2 stops32h 49m

$457

SpokaneBarcelona

GEG - BCN

GEGBCN

Spokane

Tue 12/9

6:05 am-5:05 pm

2 stops26h 00m

Barcelona-El Prat

Tue 12/16

10:15 am-10:39 am

2 stops33h 24m

$457

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Fri 2/20

5:40 am-8:00 am

2 stops18h 20m

Barcelona-El Prat

Fri 2/27

10:55 am-9:56 am

2 stops31h 01m

$463

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

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

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Mon 2/16

7:00 am-8:50 am

1 stop17h 50m

Barcelona-El Prat

Sun 2/22

10:40 am-10:36 pm

1 stop19h 56m

$484

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Mon 2/16

7:00 am-7:55 pm

2 stops28h 55m

Barcelona-El Prat

Sun 2/22

10:40 am-10:36 pm

1 stop19h 56m

$492

SpokaneBarcelona

GEG - BCN

GEGBCN

Spokane

Tue 12/9

4:10 pm-5:35 pm

2 stops16h 25m

Barcelona-El Prat

Tue 12/16

6:50 am-8:59 pm

3 stops23h 09m

$496

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Mon 2/16

6:25 am-1:00 pm

2 stops22h 35m

Barcelona-El Prat

Sun 2/22

9:55 am-9:11 pm

2 stops43h 16m

$526

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Mon 3/9

1:20 pm-1:40 pm

2 stops17h 20m

Barcelona-El Prat

Mon 3/16

10:40 am-9:15 pm

1 stop17h 35m

$680

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 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 November. Flight prices, which tend to average around $631, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to Barcelona-El Prat Airport from Idaho during February instead. Flights to Barcelona-El Prat Airport in February, while not as cheap as those in November, still average around $634.

What is the cheapest day to depart on your flight to Barcelona-El Prat Airport?

The cheapest day to depart on your flight to Barcelona-El Prat Airport is on a Sunday when prices can be found for as low as $813. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $1,459. These prices are subject to change though, so be sure to set up a Price Alert for flights to Barcelona-El Prat Airport.

What is the cheapest time of day to depart on your flight to Barcelona-El Prat Airport?

Flying to Barcelona-El Prat Airport 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. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,010 on average. Flights to Barcelona-El Prat Airport from Idaho in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You could potentially save up to 3% 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

Direct flights

None
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.
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  • 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
United AirlinesPriceFrom $552Free CancellationRating
7.4
9,010 reviews
Search United Airlines flights
FinnairPriceFrom $637Free CancellationRating
7.6
1,335 reviews
Search Finnair flights
American AirlinesPriceFrom $641Free CancellationRating
7.2
11,049 reviews
Search American Airlines flights
Air CanadaPriceFrom $651Free CancellationRating
7.1
10,428 reviews
Search Air Canada flights
DeltaPriceFrom $726Free CancellationRating
7.9
8,006 reviews
Search Delta 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
El Prat de Llobregat
L'Hospitalet de Llobregat
Tarragona
Santa Susanna
Cambrils
Cadaques
Empuriabrava
Pineda de Mar
Roses
Badalona
Calella
Pals
Palafrugell
Tortosa
La Pineda

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.

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