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Cheap flights from Idaho to Barcelona from $345

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 3/23. 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.
Finnair Logo
7:20 am - 8:50 am
BOI
-
BCN
17h 30m1 stop
Finnair Logo
10:40 am - 7:25 pm
BCN
-
BOI
16h 45m1 stop
$474Finnair
Thu, Jan 22 - Fri, Feb 6
Lufthansa Logo
2:40 pm - 5:35 pm
BOI
-
BCN
18h 55m2 stops
Lufthansa Logo
6:50 am - 9:32 pm
BCN
-
BOI
22h 42m2 stops
$476Lufthansa
Thu, Feb 19 - Wed, Feb 25
Multiple Airlines Logo
4:02 pm - 4:30 pm
BOI
-
BCN
16h 28m2 stops
Multiple Airlines Logo
10:40 am - 10:36 pm
BCN
-
BOI
19h 56m1 stop
$481Multiple Airlines
Fri, Feb 20 - Fri, Feb 27
Multiple Airlines Logo
1:38 pm - 5:55 pm
GEG
-
BCN
19h 17m2 stops
Multiple Airlines Logo
10:40 am - 6:49 pm
BCN
-
GEG
17h 09m1 stop
$481Multiple Airlines
Mon, Feb 2 - Sun, Feb 8
Delta Logo
5:50 am - 8:00 am
BOI
-
BCN
18h 10m2 stops
Delta Logo
10:15 am - 11:45 pm
BCN
-
BOI
21h 30m2 stops
$489Delta
Fri, Feb 20 - Fri, Feb 27
United Airlines Logo
5:00 am - 9:00 am
GEG
-
BCN
19h 00m2 stops
United Airlines Logo
11:00 am - 10:44 am
BCN
-
GEG
32h 44m2 stops
$489United Airlines
Thu, Jan 22 - Mon, Jan 26
United Airlines Logo
5:00 am - 9:00 am
GEG
-
BCN
19h 00m2 stops
United Airlines Logo
6:45 am - 9:07 pm
BCN
-
GEG
23h 22m2 stops
$490United Airlines
Sat, Feb 7 - Sat, Feb 14
Delta Logo
11:30 pm - 7:40 am
BOI
-
BCN
25h 10m1 stop
Delta Logo
9:15 am - 9:55 am
BCN
-
BOI
31h 40m2 stops
$494Delta
Mon, Mar 9 - Mon, Mar 16
American Airlines Logo
2:07 pm - 4:05 pm
IDA
-
BCN
17h 58m2 stops
American Airlines Logo
11:30 am - 11:07 pm
BCN
-
IDA
19h 37m2 stops
$496American Airlines
Sat, Feb 7 - Sat, Feb 14
American Airlines Logo
2:10 pm - 7:50 pm
JAC
-
BCN
21h 40m2 stops
American Airlines Logo
10:40 am - 1:02 pm
BCN
-
JAC
34h 22m1 stop
$724American Airlines
Fri, Jan 23 - Tue, Jan 27

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
Jan 22
GEG5:00 amSpokane
19h 00m
2 stops
BCN9:00 amBarcelona-El Prat
Jan 26
BCN11:00 amBarcelona-El Prat
32h 44m
2 stops
GEG10:44 amSpokane
$489
Find similar
United Airlines
Feb 7
GEG5:00 amSpokane
19h 00m
2 stops
BCN9:00 amBarcelona-El Prat
Feb 14
BCN6:45 amBarcelona-El Prat
23h 22m
2 stops
GEG9:07 pmSpokane
$490
Find similar
United Airlines
Jan 23
JAC7:00 amJackson Hole
18h 35m
2 stops
BCN9:35 amBarcelona-El Prat
Jan 27
BCN1:35 pmBarcelona-El Prat
32h 51m
2 stops
JAC2:26 pmJackson Hole
$491
Find similar

Finnair flights from Idaho to Barcelona-El Prat Airport

Our best Finnair deals on Idaho to Barcelona-El Prat Airport flight tickets
Finnair
Jan 22
BOI7:20 amBoise Air Term. Gowen Fld
17h 30m
1 stop
BCN8:50 amBarcelona-El Prat
Feb 6
BCN10:40 amBarcelona-El Prat
16h 45m
1 stop
BOI7:25 pmBoise Air Term. Gowen Fld
$474
Find similar
Finnair
Apr 19
BOI1:25 pmBoise Air Term. Gowen Fld
25h 25m
2 stops
BCN10:50 pmBarcelona-El Prat
May 3
BCN10:45 amBarcelona-El Prat
18h 22m
1 stop
BOI9:07 pmBoise Air Term. Gowen Fld
$724
Find similar
Finnair
Mar 17
BOI7:00 amBoise Air Term. Gowen Fld
17h 50m
1 stop
BCN7:50 amBarcelona-El Prat
Mar 23
BCN10:05 amBarcelona-El Prat
43h 31m
2 stops
BOI10:36 pmBoise Air Term. Gowen Fld
$884
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 December 26, 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

Thu 1/22

7:20 am-8:50 am

1 stop17h 30m

Barcelona-El Prat

Fri 2/6

10:40 am-7:25 pm

1 stop16h 45m

$474

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Thu 2/19

2:40 pm-5:35 pm

2 stops18h 55m

Barcelona-El Prat

Wed 2/25

6:50 am-9:32 pm

2 stops22h 42m

$476

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Fri 2/20

4:02 pm-4:30 pm

2 stops16h 28m

Barcelona-El Prat

Fri 2/27

10:40 am-10:36 pm

1 stop19h 56m

$481

SpokaneBarcelona

GEG - BCN

GEGBCN

Spokane

Mon 2/2

1:38 pm-5:55 pm

2 stops19h 17m

Barcelona-El Prat

Sun 2/8

10:40 am-6:49 pm

1 stop17h 09m

$481

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Fri 2/20

5:50 am-8:00 am

2 stops18h 10m

Barcelona-El Prat

Fri 2/27

10:15 am-11:45 pm

2 stops21h 30m

$489

SpokaneBarcelona

GEG - BCN

GEGBCN

Spokane

Thu 1/22

5:00 am-9:00 am

2 stops19h 00m

Barcelona-El Prat

Mon 1/26

11:00 am-10:44 am

2 stops32h 44m

$489

SpokaneBarcelona

GEG - BCN

GEGBCN

Spokane

Sat 2/7

5:00 am-9:00 am

2 stops19h 00m

Barcelona-El Prat

Sat 2/14

6:45 am-9:07 pm

2 stops23h 22m

$490

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Mon 3/9

11:30 pm-7:40 am

1 stop25h 10m

Barcelona-El Prat

Mon 3/16

9:15 am-9:55 am

2 stops31h 40m

$494

Idaho FallsBarcelona

IDA - BCN

IDABCN

Idaho Falls Fanning Field

Sat 2/7

2:07 pm-4:05 pm

2 stops17h 58m

Barcelona-El Prat

Sat 2/14

11:30 am-11:07 pm

2 stops19h 37m

$496

JacksonBarcelona

JAC - BCN

JACBCN

Jackson Hole

Fri 1/23

2:10 pm-7:50 pm

2 stops21h 40m

Barcelona-El Prat

Tue 1/27

10:40 am-1:02 pm

1 stop34h 22m

$724

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 $559, 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 $631.

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 14% 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

14h 40m

Direct flights

None
The fastest flight from Idaho to Barcelona-El Prat Airport takes 14h 40m
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
United AirlinesPriceFrom $552Free CancellationRating
7.4
9,116 reviews
Search United Airlines flights
FinnairPriceFrom $637Free CancellationRating
7.6
1,339 reviews
Search Finnair flights
American AirlinesPriceFrom $641Free CancellationRating
7.2
11,068 reviews
Search American Airlines flights
Air CanadaPriceFrom $651Free CancellationRating
7.1
10,562 reviews
Search Air Canada flights
DeltaPriceFrom $726Free CancellationRating
7.9
8,018 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
El Prat de Llobregat
Castelldefels
Tarragona
L'Hospitalet de Llobregat
Santa Susanna
Cambrils
Cadaques
Calella
Empuriabrava
Pals
Pineda de Mar
Roses
Badalona
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.

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

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