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Cheap flights from Boise to Barcelona from $399

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boise to Barcelona departing on 11/18. 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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Find the cheapest flights from Boise to Barcelona

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
5:20 am - 8:00 amBOI-BCN
18h 40m2 stops
Delta Logo
10:15 am - 11:04 amBCN-BOI
32h 49m2 stops
$438Delta
Find Deal
Tue, Dec 2 - Tue, Dec 9
Delta Logo
5:40 am - 8:00 amBOI-BCN
18h 20m2 stops
Delta Logo
10:15 am - 9:56 amBCN-BOI
31h 41m2 stops
$463Delta
Find Deal
Fri, Feb 20 - Fri, Feb 27
Delta Logo
8:50 am - 5:05 pmBOI-BCN
24h 15m2 stops
Delta Logo
10:55 am - 12:31 pmBCN-BOI
33h 36m1 stop
$468Delta
Find Deal
Fri, Feb 20 - Fri, Feb 27
American Airlines Logo
3:21 pm - 4:05 pmBOI-BCN
16h 44m2 stops
American Airlines Logo
10:40 am - 7:25 pmBCN-BOI
16h 45m1 stop
$480American Airlines
Find Deal
Sat, Jan 24 - Mon, Feb 2
Finnair Logo
7:20 am - 8:50 amBOI-BCN
17h 30m1 stop
Finnair Logo
10:40 am - 7:25 pmBCN-BOI
16h 45m1 stop
$484Finnair
Find Deal
Sat, Jan 24 - Mon, Feb 2
KLM Logo
1:43 pm - 8:20 amBOI-BCN
35h 37m1 stop
KLM Logo
11:35 am - 10:50 pmBCN-BOI
19h 15m1 stop
$489KLM
Find Deal
Sat, Mar 28 - Tue, Apr 7
KLM Logo
1:43 pm - 8:20 amBOI-BCN
35h 37m1 stop
KLM Logo
6:20 am - 4:26 pmBCN-BOI
18h 06m2 stops
$495KLM
Find Deal
Sat, Mar 28 - Tue, Apr 7
United Airlines Logo
6:25 am - 1:00 pmBOI-BCN
22h 35m2 stops
United Airlines Logo
9:55 am - 1:38 pmBCN-BOI
59h 43m2 stops
$524United Airlines
Find Deal
Mon, Feb 16 - Sun, Feb 22
United Airlines Logo
6:25 am - 4:20 pmBOI-BCN
25h 55m2 stops
United Airlines Logo
9:55 am - 9:11 pmBCN-BOI
43h 16m2 stops
$527United Airlines
Find Deal
Mon, Feb 16 - Sun, Feb 22
American Airlines Logo
7:20 am - 8:50 amBOI-BCN
17h 30m1 stop
American Airlines Logo
10:40 am - 7:25 pmBCN-BOI
16h 45m1 stop
$571American Airlines
Find Deal
Wed, Jan 14 - Sun, Jan 25

Delta flights from Boise to Barcelona

Our best Delta deals on Boise to Barcelona flight tickets
Delta
Dec 2
BOI5:20 amBoise Air Term. Gowen Fld
18h 40m
2 stops
BCN8:00 amBarcelona-El Prat
Dec 9
BCN10:15 amBarcelona-El Prat
32h 49m
2 stops
BOI11:04 amBoise Air Term. Gowen Fld
$438
Find similar
Delta
Feb 20
BOI5:40 amBoise Air Term. Gowen Fld
18h 20m
2 stops
BCN8:00 amBarcelona-El Prat
Feb 27
BCN10:15 amBarcelona-El Prat
31h 41m
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

Lufthansa flights from Boise to Barcelona

Our best Lufthansa deals on Boise to Barcelona flight tickets
Lufthansa
Mar 9
BOI2:43 pmBoise Air Term. Gowen Fld
25h 22m
2 stops
BCN11:05 pmBarcelona-El Prat
Mar 16
BCN11:55 amBarcelona-El Prat
40h 21m
2 stops
BOI9:16 pmBoise Air Term. Gowen Fld
$552
Find similar
Lufthansa
Mar 9
BOI2:43 pmBoise Air Term. Gowen Fld
17h 02m
2 stops
BCN2:45 pmBarcelona-El Prat
Mar 16
BCN6:20 pmBarcelona-El Prat
33h 56m
2 stops
BOI9:16 pmBoise Air Term. Gowen Fld
$564
Find similar
Lufthansa
Mar 9
BOI2:43 pmBoise Air Term. Gowen Fld
25h 22m
2 stops
BCN11:05 pmBarcelona-El Prat
Mar 16
BCN6:20 pmBarcelona-El Prat
33h 56m
2 stops
BOI9:16 pmBoise Air Term. Gowen Fld
$651
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Boise to Barcelona 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 6, 2025.
Use the filters below to find and compare flights from Boise to Barcelona that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Tue 12/2

5:20 am-8:00 am

2 stops18h 40m

Barcelona-El Prat

Tue 12/9

10:15 am-11:04 am

2 stops32h 49m

$438

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

10:15 am-9:56 am

2 stops31h 41m

$463

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Fri 2/20

8:50 am-5:05 pm

2 stops24h 15m

Barcelona-El Prat

Fri 2/27

10:55 am-12:31 pm

1 stop33h 36m

$468

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sat 1/24

3:21 pm-4:05 pm

2 stops16h 44m

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

Sat 1/24

7:20 am-8:50 am

1 stop17h 30m

Barcelona-El Prat

Mon 2/2

10:40 am-7:25 pm

1 stop16h 45m

$484

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sat 3/28

1:43 pm-8:20 am

1 stop35h 37m

Barcelona-El Prat

Tue 4/7

11:35 am-10:50 pm

1 stop19h 15m

$489

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Sat 3/28

1:43 pm-8:20 am

1 stop35h 37m

Barcelona-El Prat

Tue 4/7

6:20 am-4:26 pm

2 stops18h 06m

$495

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-1:38 pm

2 stops59h 43m

$524

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Mon 2/16

6:25 am-4:20 pm

2 stops25h 55m

Barcelona-El Prat

Sun 2/22

9:55 am-9:11 pm

2 stops43h 16m

$527

BoiseBarcelona

BOI - BCN

BOIBCN

Boise Air Term. Gowen Fld

Wed 1/14

7:20 am-8:50 am

1 stop17h 30m

Barcelona-El Prat

Sun 1/25

10:40 am-7:25 pm

1 stop16h 45m

$571

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Barcelona from

How to get the cheapest flight ticket from Boise to Barcelona

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?

The month of November is, on average, the cheapest month to fly to Barcelona from Boise, with most prices found around $631. If you don’t want to visit Barcelona in November, then you should wait until February to fly from Boise, when ticket prices are also cheap, with an average price of $634.

What is the cheapest day to depart on your flight to Barcelona?

The cheapest day to depart from Boise to Barcelona is on a Sunday when prices can be found for as low as $813. On the other hand, Friday is the most expensive day to depart from Boise because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,459.

What is the cheapest time of day to depart on your flight to Barcelona?

In the evening is the cheapest time of day to fly from Boise to Barcelona when you can find flight prices for as low as $842. Flying to Barcelona in the evening is an ideal time because this is during off-peak travel hours. 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 from Boise in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

Cheap Boise to Barcelona flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boise to Barcelona

Direct flights

None
There are no direct flights from Boise to Barcelona. There are no popular flight routes from Boise to Barcelona.
Search flight deals

  • How far is Boise Air Term. Gowen Fld to Barcelona by plane?

    The straight-line distance from Boise Air Term. Gowen Fld to Barcelona is 5426.4 mi. By plane, this route typically takes 16h 16m.

  • When did momondo last update prices for flights from Boise Air Term. Gowen Fld Airport to Barcelona?

    Prices for flights from Boise Air Term. Gowen Fld Airport to Barcelona refresh daily.

  • How many operators does momondo search for flights from Boise Air Term. Gowen Fld Airport to Barcelona?

  • How old do you have to be to fly from Boise Air Term. Gowen Fld Airport to Barcelona?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boise Air Term. Gowen Fld Airport to Barcelona.

  • What documentation or ID do you need to fly to Barcelona?

    The required travel and health documents for your Barcelona trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Barcelona. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Boise to Barcelona

Compare and see reviews for airlines that fly from Boise to Barcelona with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $552Free CancellationRating
7.4
9,007 reviews
Search United Airlines flights
FinnairPriceFrom $637Free CancellationRating
7.6
1,335 reviews
Search Finnair flights
American AirlinesPriceFrom $641Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights
Air CanadaPriceFrom $651Free CancellationRating
7.1
10,416 reviews
Search Air Canada flights
DeltaPriceFrom $726Free CancellationRating
7.9
8,001 reviews
Search Delta flights

Why use momondo?

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

Finding the right flight to Barcelona from Boise is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Barcelona quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to Barcelona from Boise with this policy.

How can momondo help me find flights from Boise to Barcelona?

momondo helps you find the best flight between Boise and Barcelona by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes. momondo can track prices for Boise to Barcelona flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Find better results for your trip to Spain

Fly into one of these airports located in Barcelona

Airports listed have a maximum distance of 46.7 mi from Barcelona
Barcelona-El Prat Airport
Girona Costa Brava Airport