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Cheap flights from Boise to Costa Rica from $267

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 7/2. 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.
Multiple Airlines Logo
7:05 am - 11:15 pm
BOI
-
SJO
16h 10m
2 stops
Multiple Airlines Logo
5:45 am - 11:00 pm
SJO
-
BOI
17h 15m
2 stops
$394Multiple Airlines
Do, Aug 20 - Do, Aug 27
Multiple Airlines Logo
6:57 pm - 8:45 am
BOI
-
SJO
13h 48m
2 stops
Multiple Airlines Logo
5:45 am - 10:57 pm
SJO
-
BOI
17h 12m
2 stops
$396Multiple Airlines
Mi, Okt 21 - Mi, Okt 28
Multiple Airlines Logo
7:00 am - 11:15 pm
BOI
-
SJO
15h 15m
2 stops
Multiple Airlines Logo
5:45 am - 10:58 pm
SJO
-
BOI
18h 13m
2 stops
$426Multiple Airlines
Mo, Nov 2 - Di, Nov 17
Multiple Airlines Logo
6:47 pm - 11:15 pm
BOI
-
SJO
28h 28m
2 stops
Multiple Airlines Logo
7:45 pm - 11:00 pm
SJO
-
BOI
27h 15m
2 stops
$427Multiple Airlines
Mi, Aug 19 - Mo, Aug 31
United Airlines Logo
7:05 pm - 7:15 am
BOI
-
SJO
12h 10m
1 stop
United Airlines Logo
8:45 am - 9:40 pm
SJO
-
BOI
12h 55m
1 stop
$450United Airlines
Di, Jun 9 - Di, Jun 16
Alaska Airlines Logo
5:56 am - 7:54 pm
BOI
-
LIR
13h 58m
2 stops
Alaska Airlines Logo
9:16 am - 9:57 am
LIR
-
BOI
24h 41m
2 stops
$535Alaska Airlines
Mo, Okt 5 - Di, Okt 13
United Airlines Logo
10:31 am - 12:10 pm
BOI
-
LIR
25h 39m
2 stops
United Airlines Logo
11:49 am - 9:31 pm
LIR
-
BOI
9h 42m
1 stop
$600United Airlines
So, Sep 20 - Sa, Sep 26
American Airlines Logo
3:16 pm - 1:18 pm
BOI
-
LIR
22h 02m
2 stops
American Airlines Logo
2:18 pm - 1:22 pm
LIR
-
BOI
23h 04m
2 stops
$605American Airlines
Di, Sep 8 - Mo, Sep 14
American Airlines Logo
2:49 pm - 11:27 am
BOI
-
LIR
20h 38m
2 stops
American Airlines Logo
2:45 pm - 2:20 pm
LIR
-
BOI
23h 35m
2 stops
$610American Airlines
Mo, Aug 17 - So, Aug 23
Alaska Airlines Logo
7:26 am - 7:54 pm
BOI
-
LIR
12h 28m
1 stop
Alaska Airlines Logo
9:16 am - 10:57 pm
LIR
-
BOI
13h 41m
1 stop
$639Alaska Airlines
Mo, Okt 5 - Di, Okt 13

United Airlines flights from Boise to Costa Rica

Our best United Airlines deals on Boise to Costa Rica flight tickets
United Airlines
Jun 9
BOI7:05 pmBoise Air Term. Gowen Fld
12h 10m
1 stop
SJO7:15 amSan José Juan Santamaria Intl
Jun 16
SJO8:45 amSan José Juan Santamaria Intl
12h 55m
1 stop
BOI9:40 pmBoise Air Term. Gowen Fld
$450
United Airlines
Jun 9
BOI7:05 pmBoise Air Term. Gowen Fld
12h 10m
1 stop
SJO7:15 amSan José Juan Santamaria Intl
Jun 17
SJO8:45 amSan José Juan Santamaria Intl
12h 55m
1 stop
BOI9:40 pmBoise Air Term. Gowen Fld
$544
United Airlines
Aug 19
BOI7:05 pmBoise Air Term. Gowen Fld
17h 16m
2 stops
SJO12:21 pmSan José Juan Santamaria Intl
Aug 31
SJO8:45 amSan José Juan Santamaria Intl
10h 39m
1 stop
BOI7:24 pmBoise Air Term. Gowen Fld
$555

American Airlines flights from Boise to Costa Rica

Our best American Airlines deals on Boise to Costa Rica flight tickets
American Airlines
Oct 21
BOI2:55 pmBoise Air Term. Gowen Fld
22h 05m
2 stops
SJO1:00 pmSan José Juan Santamaria Intl
Oct 28
SJO12:57 pmSan José Juan Santamaria Intl
22h 29m
1 stop
BOI11:26 amBoise Air Term. Gowen Fld
$465
American Airlines
Sep 8
BOI3:16 pmBoise Air Term. Gowen Fld
22h 02m
2 stops
LIR1:18 pmLiberia
Sep 14
LIR2:18 pmLiberia
23h 04m
2 stops
BOI1:22 pmBoise Air Term. Gowen Fld
$605
American Airlines
Aug 17
BOI2:49 pmBoise Air Term. Gowen Fld
20h 38m
2 stops
LIR11:27 amLiberia
Aug 23
LIR2:45 pmLiberia
23h 35m
2 stops
BOI2:20 pmBoise Air Term. Gowen Fld
$610

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 Mai 30, 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

Cheapest round-trip

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Do 8/20

7:05 am-11:15 pm

2 stops16h 10m

San José Juan Santamaria Intl

Do 8/27

5:45 am-11:00 pm

2 stops17h 15m

$394

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Mi 10/21

6:57 pm-8:45 am

2 stops13h 48m

San José Juan Santamaria Intl

Mi 10/28

5:45 am-10:57 pm

2 stops17h 12m

$396

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Mo 11/2

7:00 am-11:15 pm

2 stops15h 15m

San José Juan Santamaria Intl

Di 11/17

5:45 am-10:58 pm

2 stops18h 13m

$426

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Mi 8/19

6:47 pm-11:15 pm

2 stops28h 28m

San José Juan Santamaria Intl

Mo 8/31

7:45 pm-11:00 pm

2 stops27h 15m

$427
Quickest round-trip

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Di 6/9

7:05 pm-7:15 am

1 stop12h 10m

San José Juan Santamaria Intl

Di 6/16

8:45 am-9:40 pm

1 stop12h 55m

$450

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Mo 10/5

5:56 am-7:54 pm

2 stops13h 58m

Liberia

Di 10/13

9:16 am-9:57 am

2 stops24h 41m

$535

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

So 9/20

10:31 am-12:10 pm

2 stops25h 39m

Liberia

Sa 9/26

11:49 am-9:31 pm

1 stop9h 42m

$600

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Di 9/8

3:16 pm-1:18 pm

2 stops22h 02m

Liberia

Mo 9/14

2:18 pm-1:22 pm

2 stops23h 04m

$605

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Mo 8/17

2:49 pm-11:27 am

2 stops20h 38m

Liberia

So 8/23

2:45 pm-2:20 pm

2 stops23h 35m

$610

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Mo 10/5

7:26 am-7:54 pm

1 stop12h 28m

Liberia

Di 10/13

9:16 am-10:57 pm

1 stop13h 41m

$639

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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 October. Flight prices, which tend to average around $141, are often lower during this time because this is during the off-season. If you’re not able to fly to Costa Rica in October, then February is your next best option. Flight prices from Boise to Costa Rica during February average around $228.

How far in advance should I book a flight from Boise 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 $558 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 $377 on momondo.

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

You could potentially save up to 35% 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 49m

Direct flights

None
The fastest flight from Boise to Costa Rica takes 8h 49m
There are no direct flights from Boise to Costa Rica. There are no popular flight routes from Boise to Costa Rica.
Search flight deals

Frequently asked questions about flying from Boise to Costa Rica

  • 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
8,416 reviews
Search Delta flights
American AirlinesPriceFrom $279Free CancellationRating
7.1
11,640 reviews
Search American Airlines flights
United AirlinesPriceFrom $315Free CancellationRating
7.4
9,766 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $376Free CancellationRating
7.9
12,433 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $477Free CancellationRating
8.0
4,262 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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