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Cheap flights from Boise to Costa Rica from $133

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 Costa Rica departing on 1/25. 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 Boise to Costa Rica

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
2:37 pm - 1:15 pm
BOI
-
SJO
21h 38m2 stops
United Airlines Logo
9:40 am - 11:48 pm
SJO
-
BOI
15h 08m1 stop
$298United Airlines
Tue, Feb 3 - Tue, Feb 10
United Airlines Logo
2:37 pm - 1:15 pm
BOI
-
SJO
21h 38m2 stops
United Airlines Logo
6:30 am - 7:51 pm
SJO
-
BOI
14h 21m2 stops
$303United Airlines
Tue, Feb 3 - Tue, Feb 10
Multiple Airlines Logo
7:30 am - 11:15 pm
BOI
-
SJO
15h 45m2 stops
Multiple Airlines Logo
6:10 am - 11:07 pm
SJO
-
BOI
16h 57m2 stops
$326Multiple Airlines
Tue, Apr 7 - Tue, Apr 14
Alaska Airlines Logo
9:00 am - 11:33 pm
BOI
-
SJO
14h 33m2 stops
Alaska Airlines Logo
12:53 am - 10:24 pm
SJO
-
BOI
21h 31m2 stops
$344Alaska Airlines
Sat, May 23 - Sun, May 24
Alaska Airlines Logo
8:10 am - 11:33 pm
BOI
-
SJO
15h 23m2 stops
Alaska Airlines Logo
12:53 am - 10:58 pm
SJO
-
BOI
22h 05m1 stop
$350Alaska Airlines
Sat, May 23 - Sun, May 24
United Airlines Logo
7:05 pm - 8:32 am
BOI
-
SJO
12h 27m1 stop
United Airlines Logo
6:30 am - 7:51 pm
SJO
-
BOI
14h 21m2 stops
$371United Airlines
Fri, Jan 9 - Fri, Jan 30
Multiple Airlines Logo
8:16 am - 11:40 pm
BOI
-
SJO
14h 24m3 stops
Multiple Airlines Logo
5:00 am - 12:44 pm
SJO
-
BOI
32h 44m2 stops
$385Multiple Airlines
Sun, Feb 22 - Sat, Feb 28
GOL Logo
1:58 pm - 12:43 pm
BOI
-
SJO
21h 45m2 stops
GOL Logo
1:51 pm - 1:08 pm
SJO
-
BOI
24h 17m2 stops
$387GOL
Fri, Jan 9 - Fri, Jan 30
American Airlines Logo
7:02 pm - 2:18 pm
BOI
-
LIR
18h 16m2 stops
American Airlines Logo
3:18 pm - 12:46 pm
LIR
-
BOI
22h 28m2 stops
$493American Airlines
Sun, Feb 22 - Fri, Feb 27
American Airlines Logo
1:36 pm - 2:25 pm
BOI
-
LIR
23h 49m1 stop
American Airlines Logo
1:28 pm - 10:36 pm
LIR
-
BOI
10h 08m1 stop
$500American Airlines
Sun, Feb 15 - Thu, Feb 26

United Airlines flights from Boise to Costa Rica

Our best United Airlines deals on Boise to Costa Rica flight tickets
United Airlines
Feb 3
BOI2:37 pmBoise Air Term. Gowen Fld
21h 38m
2 stops
SJO1:15 pmSan José Juan Santamaria Intl
Feb 10
SJO9:40 amSan José Juan Santamaria Intl
15h 08m
1 stop
BOI11:48 pmBoise Air Term. Gowen Fld
$298
Find similar
United Airlines
Feb 3
BOI2:37 pmBoise Air Term. Gowen Fld
21h 38m
2 stops
SJO1:15 pmSan José Juan Santamaria Intl
Feb 10
SJO6:30 amSan José Juan Santamaria Intl
14h 21m
2 stops
BOI7:51 pmBoise Air Term. Gowen Fld
$303
Find similar
United Airlines
Jan 9
BOI7:05 pmBoise Air Term. Gowen Fld
12h 27m
1 stop
SJO8:32 amSan José Juan Santamaria Intl
Jan 30
SJO6:30 amSan José Juan Santamaria Intl
14h 21m
2 stops
BOI7:51 pmBoise Air Term. Gowen Fld
$371
Find similar

Alaska Airlines flights from Boise to Costa Rica

Our best Alaska Airlines deals on Boise to Costa Rica flight tickets
Alaska Airlines
May 23
BOI9:00 amBoise Air Term. Gowen Fld
14h 33m
2 stops
SJO11:33 pmSan José Juan Santamaria Intl
May 24
SJO12:53 amSan José Juan Santamaria Intl
21h 31m
2 stops
BOI10:24 pmBoise Air Term. Gowen Fld
$344
Find similar
Alaska Airlines
May 23
BOI8:10 amBoise Air Term. Gowen Fld
15h 23m
2 stops
SJO11:33 pmSan José Juan Santamaria Intl
May 24
SJO12:53 amSan José Juan Santamaria Intl
22h 05m
1 stop
BOI10:58 pmBoise Air Term. Gowen Fld
$350
Find similar
Alaska Airlines
May 24
BOI4:01 pmBoise Air Term. Gowen Fld
31h 45m
2 stops
SJO11:46 pmSan José Juan Santamaria Intl
May 30
SJO1:06 amSan José Juan Santamaria Intl
15h 38m
2 stops
BOI4:44 pmBoise Air Term. Gowen Fld
$411
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Boise to Costa Rica 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 22, 2025.
Use the filters below to find and compare flights from Boise to Costa Rica that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Tue 2/3

2:37 pm-1:15 pm

2 stops21h 38m

San José Juan Santamaria Intl

Tue 2/10

9:40 am-11:48 pm

1 stop15h 08m

$298

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Tue 2/3

2:37 pm-1:15 pm

2 stops21h 38m

San José Juan Santamaria Intl

Tue 2/10

6:30 am-7:51 pm

2 stops14h 21m

$303

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Tue 4/7

7:30 am-11:15 pm

2 stops15h 45m

San José Juan Santamaria Intl

Tue 4/14

6:10 am-11:07 pm

2 stops16h 57m

$326

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Sat 5/23

9:00 am-11:33 pm

2 stops14h 33m

San José Juan Santamaria Intl

Sun 5/24

12:53 am-10:24 pm

2 stops21h 31m

$344

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Sat 5/23

8:10 am-11:33 pm

2 stops15h 23m

San José Juan Santamaria Intl

Sun 5/24

12:53 am-10:58 pm

1 stop22h 05m

$350

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Fri 1/9

7:05 pm-8:32 am

1 stop12h 27m

San José Juan Santamaria Intl

Fri 1/30

6:30 am-7:51 pm

2 stops14h 21m

$371

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Sun 2/22

8:16 am-11:40 pm

3 stops14h 24m

San José Juan Santamaria Intl

Sat 2/28

5:00 am-12:44 pm

2 stops32h 44m

$385

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Fri 1/9

1:58 pm-12:43 pm

2 stops21h 45m

San José Juan Santamaria Intl

Fri 1/30

1:51 pm-1:08 pm

2 stops24h 17m

$387

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Sun 2/22

7:02 pm-2:18 pm

2 stops18h 16m

Liberia

Fri 2/27

3:18 pm-12:46 pm

2 stops22h 28m

$493

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Sun 2/15

1:36 pm-2:25 pm

1 stop23h 49m

Liberia

Thu 2/26

1:28 pm-10:36 pm

1 stop10h 08m

$500

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 Costa Rica from

How to get the cheapest flight ticket from Boise to Costa Rica

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 Costa Rica?

The cheapest month to fly to Costa Rica from Boise is in January. Flight prices, which tend to average around $357, are often lower during this time because this is during the off-season. If you’re not able to fly to Costa Rica in January, then October is your next best option. Flight prices from Boise to Costa Rica during October average around $433.

What is the cheapest day to depart on your flight to Costa Rica?

According to our data, Sunday is the cheapest day to fly to Costa Rica from Boise. The lowest ticket price found for a Sunday departure recently was $605. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $765. These prices are subject to change though, so be sure to set up a Price Alert for flights to Costa Rica.

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

In the evening is the cheapest time of day to fly from Boise to Costa Rica when you can find flight prices for as low as $581. Flying to Costa Rica in the evening is an ideal time because this is during off-peak travel hours. Flights to Costa Rica are more costly in the morning, with an average ticket price of $723. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to Costa Rica?

You are more likely to see cheaper flights to Costa Rica from Boise when booking week ahead of your departure date. In general, you can expect to find flights to Costa Rica for around $588 when searching week out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Costa Rica from Boise for as low as $425 on momondo.

Can stopping save me money on Boise to Costa Rica flights?

You could potentially save up to 26% on your flight if you consider stops on a Boise to Costa Rica flight.

Cheap Boise to Costa Rica flight deals and tips

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

Fastest flight time

8h 58m

Direct flights

None
The fastest flight from Boise to Costa Rica takes 8h 58m
There are no direct flights from Boise to Costa Rica. There are no popular flight routes from Boise to Costa Rica.
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  • When did momondo last update prices for flights from Boise Air Term. Gowen Fld Airport to Costa Rica?

    Prices for flights from Boise Air Term. Gowen Fld Airport to Costa Rica are refreshed on a daily basis.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Boise Air Term. Gowen Fld Airport to Costa Rica.

  • What documentation or ID do you need to fly to Costa Rica?

    The required travel and health documents for your Costa Rica 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 Costa Rica. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Boise to Costa Rica

Compare and see reviews for airlines that fly from Boise to Costa Rica with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $141Free CancellationRating
7.9
8,014 reviews
Search Delta flights
United AirlinesPriceFrom $309Free CancellationRating
7.4
9,102 reviews
Search United Airlines flights
American AirlinesPriceFrom $317Free CancellationRating
7.2
11,052 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $376Free CancellationRating
8.0
11,499 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $454Free CancellationRating
8.0
4,254 reviews
Search Southwest flights

Why use momondo?

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

Finding the right flight to Costa Rica 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 Costa Rica quick and easy, saving you time and money.

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

Flights from Boise to Costa Rica with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Boise to Costa Rica?

Once all potential Boise to Costa Rica flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of Boise to Costa Rica flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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