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Cheap flights from Idaho to Barcelona from $312

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 10/12. 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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0 bags

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Find the cheapest flights from Idaho to Barcelona

Cheap round-trip flights

Logo
12:35 pm - 9:35 amBOI-BCN
37h 00m2 stops
Logo
1:35 pm - 11:39 amBCN-BOI
30h 04m2 stops
$461
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Sat, Nov 8 - Mon, Nov 17
Logo
2:31 pm - 9:35 amBOI-BCN
35h 04m3 stops
Logo
1:35 pm - 11:39 amBCN-BOI
30h 04m2 stops
$467
Find Deal
Sat, Nov 8 - Mon, Nov 17
United Airlines Logo
8:25 am - 9:35 amBOI-BCN
17h 10m2 stops
United Airlines Logo
1:35 pm - 9:21 pmBCN-BOI
39h 46m2 stops
$483United Airlines
Find Deal
Wed, Nov 19 - Thu, Nov 27
Air Canada Logo
5:00 am - 7:50 amBOI-BCN
18h 50m2 stops
Air Canada Logo
12:10 pm - 1:43 pmBCN-BOI
33h 33m2 stops
$489Air Canada
Find Deal
Sun, Oct 12 - Wed, Oct 22
United Airlines Logo
6:15 am - 5:35 pmBOI-BCN
27h 20m2 stops
United Airlines Logo
3:05 pm - 11:39 amBCN-BOI
28h 34m1 stop
$511United Airlines
Find Deal
Wed, Nov 19 - Thu, Nov 27
Air Canada Logo
2:45 pm - 7:50 amBOI-BCN
57h 05m2 stops
Air Canada Logo
12:10 pm - 1:43 pmBCN-BOI
33h 33m2 stops
$561Air Canada
Find Deal
Fri, Sep 19 - Tue, Sep 30
Iberia Logo
1:38 pm - 10:50 pmBOI-BCN
25h 12m2 stops
Iberia Logo
12:20 pm - 10:22 pmBCN-BOI
18h 02m1 stop
$585Iberia
Find Deal
Wed, Oct 1 - Tue, Oct 7
Iberia Logo
1:33 pm - 10:50 pmBOI-BCN
25h 17m2 stops
Iberia Logo
12:20 pm - 10:24 pmBCN-BOI
18h 04m1 stop
$597Iberia
Find Deal
Mon, Oct 13 - Thu, Oct 23
American Airlines Logo
1:10 pm - 4:00 pmJAC-BCN
18h 50m2 stops
American Airlines Logo
3:05 pm - 12:31 pmBCN-JAC
28h 26m2 stops
$765American Airlines
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Thu, Oct 9 - Sun, Oct 26
American Airlines Logo
1:10 pm - 10:30 amJAC-BCN
13h 20m1 stop
American Airlines Logo
3:05 pm - 12:29 pmBCN-JAC
28h 24m2 stops
$862American Airlines
Find Deal
Thu, Oct 9 - Sun, Oct 26

United Airlines flights from Idaho to Barcelona-El Prat Airport

Our best United Airlines deals on Idaho to Barcelona-El Prat Airport flight tickets
United Airlines
Nov 19
BOI8:25 amBoise Air Term. Gowen Fld
17h 10m
2 stops
BCN9:35 amBarcelona-El Prat
Nov 27
BCN1:35 pmBarcelona-El Prat
39h 46m
2 stops
BOI9:21 pmBoise Air Term. Gowen Fld
$483
Find similar
United Airlines
Nov 19
BOI6:15 amBoise Air Term. Gowen Fld
27h 20m
2 stops
BCN5:35 pmBarcelona-El Prat
Nov 27
BCN3:05 pmBarcelona-El Prat
28h 34m
1 stop
BOI11:39 amBoise Air Term. Gowen Fld
$511
Find similar
United Airlines
Sep 21
GEG12:35 pmSpokane
16h 25m
1 stop
BCN2:00 pmBarcelona-El Prat
Sep 28
BCN1:50 pmBarcelona-El Prat
53h 49m
2 stops
GEG10:39 amSpokane
$512
Find similar

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
Oct 12
BOI5:00 amBoise Air Term. Gowen Fld
18h 50m
2 stops
BCN7:50 amBarcelona-El Prat
Oct 22
BCN12:10 pmBarcelona-El Prat
33h 33m
2 stops
BOI1:43 pmBoise Air Term. Gowen Fld
$489
Find similar
Air Canada
Sep 19
BOI2:45 pmBoise Air Term. Gowen Fld
57h 05m
2 stops
BCN7:50 amBarcelona-El Prat
Sep 30
BCN12:10 pmBarcelona-El Prat
33h 33m
2 stops
BOI1:43 pmBoise Air Term. Gowen Fld
$561
Find similar
Air Canada
Oct 11
BOI5:39 pmBoise Air Term. Gowen Fld
30h 11m
2 stops
BCN7:50 amBarcelona-El Prat
Oct 23
BCN12:10 pmBarcelona-El Prat
38h 37m
2 stops
BOI6:47 pmBoise Air Term. Gowen Fld
$565
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 August 7, 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

Sat 11/8

12:35 pm-9:35 am

2 stops37h 00m

Barcelona-El Prat

Mon 11/17

1:35 pm-11:39 am

2 stops30h 04m

$461

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sat 11/8

2:31 pm-9:35 am

3 stops35h 04m

Barcelona-El Prat

Mon 11/17

1:35 pm-11:39 am

2 stops30h 04m

$467

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Wed 11/19

8:25 am-9:35 am

2 stops17h 10m

Barcelona-El Prat

Thu 11/27

1:35 pm-9:21 pm

2 stops39h 46m

$483

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sun 10/12

5:00 am-7:50 am

2 stops18h 50m

Barcelona-El Prat

Wed 10/22

12:10 pm-1:43 pm

2 stops33h 33m

$489

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Wed 11/19

6:15 am-5:35 pm

2 stops27h 20m

Barcelona-El Prat

Thu 11/27

3:05 pm-11:39 am

1 stop28h 34m

$511

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Fri 9/19

2:45 pm-7:50 am

2 stops57h 05m

Barcelona-El Prat

Tue 9/30

12:10 pm-1:43 pm

2 stops33h 33m

$561

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Wed 10/1

1:38 pm-10:50 pm

2 stops25h 12m

Barcelona-El Prat

Tue 10/7

12:20 pm-10:22 pm

1 stop18h 02m

$585

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Mon 10/13

1:33 pm-10:50 pm

2 stops25h 17m

Barcelona-El Prat

Thu 10/23

12:20 pm-10:24 pm

1 stop18h 04m

$597

JacksonBarcelona

JAC - BCN

JACBCN

Jackson Hole

Thu 10/9

1:10 pm-4:00 pm

2 stops18h 50m

Barcelona-El Prat

Sun 10/26

3:05 pm-12:31 pm

2 stops28h 26m

$765

JacksonBarcelona

JAC - BCN

JACBCN

Jackson Hole

Thu 10/9

1:10 pm-10:30 am

1 stop13h 20m

Barcelona-El Prat

Sun 10/26

3:05 pm-12:29 pm

2 stops28h 24m

$862

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 $482, 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 November instead. Flights to Barcelona-El Prat Airport in November, while not as cheap as those in February, still average around $636.

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 29% 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

Best Price Found

$312

Fastest flight time

13h 20m

Direct flights

None
The best one-way flight to Barcelona-El Prat Airport from Idaho in the past 72 hours is $312. The best round-trip flight deal from Idaho to Barcelona-El Prat Airport found on momondo in the last 72 hours is $461.
The fastest flight from Idaho to Barcelona-El Prat Airport takes 13h 20m
There are no direct flights from Idaho to Barcelona-El Prat Airport. Popular non-direct routes for this connection are Boise Air Term. Gowen Fld Airport - Barcelona-El Prat Airport and Spokane Airport - 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
DeltaPriceFrom $607Free CancellationRating
8.0
7,985 reviews
Search Delta flights
United AirlinesPriceFrom $631Free CancellationRating
7.4
8,917 reviews
Search United Airlines flights
FinnairPriceFrom $637Free CancellationRating
7.6
1,319 reviews
Search Finnair flights
American AirlinesPriceFrom $641Free CancellationRating
7.2
10,000 reviews
Search American Airlines 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
L'Hospitalet de Llobregat
Tossa de Mar
Tarragona
El Prat de Llobregat
Castelldefels
Santa Susanna
Badalona
Calella
Cambrils
Pineda de Mar
Empuriabrava
Cadaques
Roses
Palafrugell
Tortosa
Malgrat de Mar
Llafranc

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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