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Cheap flights from Boise to Costa Rica from $154

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 4/15. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:26 pm - 11:35 am
BOI
-
SJO
17h 09m
2 stops
American Airlines Logo
12:10 pm - 1:03 pm
SJO
-
BOI
24h 53m
2 stops
$365American Airlines
Mon, Apr 20 - Mon, Apr 27
United Airlines Logo
7:03 pm - 10:11 am
BOI
-
SJO
15h 08m
2 stops
United Airlines Logo
8:45 am - 7:53 pm
SJO
-
BOI
11h 08m
1 stop
$381United Airlines
Fri, Apr 17 - Mon, Apr 27
Multiple Airlines Logo
8:21 am - 11:15 pm
BOI
-
SJO
14h 54m
2 stops
Multiple Airlines Logo
5:45 am - 10:51 pm
SJO
-
BOI
17h 06m
2 stops
$388Multiple Airlines
Sat, Aug 8 - Sat, Aug 15
Multiple Airlines Logo
7:14 pm - 8:45 am
BOI
-
SJO
13h 31m
2 stops
Multiple Airlines Logo
5:45 am - 10:58 pm
SJO
-
BOI
17h 13m
2 stops
$390Multiple Airlines
Fri, May 8 - Sat, May 16
Alaska Airlines Logo
9:02 am - 11:45 pm
BOI
-
SJO
14h 43m
2 stops
Alaska Airlines Logo
12:55 am - 12:34 pm
SJO
-
BOI
11h 39m
1 stop
$392Alaska Airlines
Thu, Apr 30 - Tue, May 5
American Airlines Logo
6:33 pm - 9:25 am
BOI
-
SJO
14h 52m
2 stops
American Airlines Logo
2:22 pm - 12:51 pm
SJO
-
BOI
22h 29m
2 stops
$394American Airlines
Mon, Mar 30 - Tue, Apr 7
Multiple Airlines Logo
8:16 am - 11:15 pm
BOI
-
SJO
13h 59m
1 stop
Multiple Airlines Logo
6:00 am - 11:00 pm
SJO
-
BOI
17h 00m
1 stop
$398Multiple Airlines
Thu, Mar 5 - Thu, Mar 12
Multiple Airlines Logo
8:11 am - 11:40 pm
BOI
-
SJO
15h 29m
2 stops
Multiple Airlines Logo
9:40 am - 12:34 pm
SJO
-
BOI
26h 54m
2 stops
$399Multiple Airlines
Thu, Apr 30 - Wed, May 6
Multiple Airlines Logo
7:14 pm - 11:30 am
BOI
-
SJO
16h 16m
2 stops
Multiple Airlines Logo
4:35 pm - 11:01 pm
SJO
-
BOI
30h 26m
2 stops
$401Multiple Airlines
Fri, Apr 24 - Sun, May 10
Alaska Airlines Logo
6:00 am - 6:20 am
BOI
-
LIR
24h 20m
2 stops
Alaska Airlines Logo
11:20 am - 8:07 am
LIR
-
BOI
20h 47m
2 stops
$473Alaska Airlines
Tue, Apr 28 - Mon, May 4

United Airlines flights from Boise to Costa Rica

Our best United Airlines deals on Boise to Costa Rica flight tickets
United Airlines
Apr 25
BOI5:00 amBoise Air Term. Gowen Fld
14h 37m
2 stops
SJO7:37 pmSan José Juan Santamaria Intl
May 11
SJO8:45 amSan José Juan Santamaria Intl
10h 26m
1 stop
BOI7:11 pmBoise Air Term. Gowen Fld
$360
United Airlines
Apr 17
BOI7:03 pmBoise Air Term. Gowen Fld
15h 08m
2 stops
SJO10:11 amSan José Juan Santamaria Intl
Apr 27
SJO8:45 amSan José Juan Santamaria Intl
11h 08m
1 stop
BOI7:53 pmBoise Air Term. Gowen Fld
$381
United Airlines
May 1
BOI4:20 pmBoise Air Term. Gowen Fld
14h 55m
1 stop
SJO7:15 amSan José Juan Santamaria Intl
May 17
SJO8:45 amSan José Juan Santamaria Intl
10h 26m
1 stop
BOI7:11 pmBoise Air Term. Gowen Fld
$383

Alaska Airlines flights from Boise to Costa Rica

Our best Alaska Airlines deals on Boise to Costa Rica flight tickets
Alaska Airlines
Apr 30
BOI9:02 amBoise Air Term. Gowen Fld
14h 43m
2 stops
SJO11:45 pmSan José Juan Santamaria Intl
May 5
SJO12:55 amSan José Juan Santamaria Intl
11h 39m
1 stop
BOI12:34 pmBoise Air Term. Gowen Fld
$392
Alaska Airlines
Apr 30
BOI9:02 amBoise Air Term. Gowen Fld
14h 43m
2 stops
SJO11:45 pmSan José Juan Santamaria Intl
May 5
SJO12:55 amSan José Juan Santamaria Intl
22h 07m
2 stops
BOI11:02 pmBoise Air Term. Gowen Fld
$420
Alaska Airlines
Apr 30
BOI6:00 amBoise Air Term. Gowen Fld
17h 45m
2 stops
SJO11:45 pmSan José Juan Santamaria Intl
May 5
SJO12:55 amSan José Juan Santamaria Intl
11h 39m
1 stop
BOI12:34 pmBoise Air Term. Gowen Fld
$423

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 February 21, 2026.
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

Mon 4/20

6:26 pm-11:35 am

2 stops17h 09m

San José Juan Santamaria Intl

Mon 4/27

12:10 pm-1:03 pm

2 stops24h 53m

$365

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Fri 4/17

7:03 pm-10:11 am

2 stops15h 08m

San José Juan Santamaria Intl

Mon 4/27

8:45 am-7:53 pm

1 stop11h 08m

$381

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Sat 8/8

8:21 am-11:15 pm

2 stops14h 54m

San José Juan Santamaria Intl

Sat 8/15

5:45 am-10:51 pm

2 stops17h 06m

$388

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Fri 5/8

7:14 pm-8:45 am

2 stops13h 31m

San José Juan Santamaria Intl

Sat 5/16

5:45 am-10:58 pm

2 stops17h 13m

$390

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Thu 4/30

9:02 am-11:45 pm

2 stops14h 43m

San José Juan Santamaria Intl

Tue 5/5

12:55 am-12:34 pm

1 stop11h 39m

$392

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Mon 3/30

6:33 pm-9:25 am

2 stops14h 52m

San José Juan Santamaria Intl

Tue 4/7

2:22 pm-12:51 pm

2 stops22h 29m

$394

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Thu 3/5

8:16 am-11:15 pm

1 stop13h 59m

San José Juan Santamaria Intl

Thu 3/12

6:00 am-11:00 pm

1 stop17h 00m

$398

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Thu 4/30

8:11 am-11:40 pm

2 stops15h 29m

San José Juan Santamaria Intl

Wed 5/6

9:40 am-12:34 pm

2 stops26h 54m

$399

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Fri 4/24

7:14 pm-11:30 am

2 stops16h 16m

San José Juan Santamaria Intl

Sun 5/10

4:35 pm-11:01 pm

2 stops30h 26m

$401

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Tue 4/28

6:00 am-6:20 am

2 stops24h 20m

Liberia

Mon 5/4

11:20 am-8:07 am

2 stops20h 47m

$473

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 $344, 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 $431.

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 weeks ahead of your departure date. In general, you can expect to find flights to Costa Rica for around $567 when searching weeks 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 $354 on momondo.

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

You could potentially save up to 36% 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 53m

Direct flights

None
The fastest flight from Boise to Costa Rica takes 8h 53m
There are no direct flights from Boise to Costa Rica. There are no popular flight routes from Boise to Costa Rica.
Search flight deals

  • 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
8,241 reviews
Search Delta flights
American AirlinesPriceFrom $297Free CancellationRating
7.2
11,338 reviews
Search American Airlines flights
United AirlinesPriceFrom $297Free CancellationRating
7.4
9,341 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $376Free CancellationRating
8.0
11,928 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $454Free CancellationRating
8.0
4,299 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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