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Cheap flights from Boise to Costa Rica from $219

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 7/27. 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
1 adult, Economy, 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
$450Multiple Airlines
Thu, Sep 17 - Tue, Sep 22
Multiple Airlines Logo
6:47 pm - 11:15 pm
BOI
-
SJO
28h 28m
2 stops
Multiple Airlines Logo
5:05 am - 11:00 pm
SJO
-
BOI
17h 55m
2 stops
$467Multiple Airlines
Wed, Sep 2 - Wed, Sep 9
Multiple Airlines Logo
7:05 am - 11:15 pm
BOI
-
SJO
16h 10m
2 stops
Multiple Airlines Logo
12:40 pm - 12:33 pm
SJO
-
BOI
23h 53m
3 stops
$468Multiple Airlines
Sat, Sep 5 - Sun, Sep 13
Delta Logo
5:30 am - 12:00 pm
BOI
-
LIR
30h 30m
2 stops
Delta Logo
1:25 pm - 9:48 am
LIR
-
BOI
20h 23m
2 stops
$585Delta
Sun, Aug 2 - Wed, Sep 2
Alaska Airlines Logo
6:51 pm - 6:22 am
BOI
-
LIR
10h 31m
1 stop
Alaska Airlines Logo
11:22 am - 10:55 pm
LIR
-
BOI
12h 33m
1 stop
$603Alaska Airlines
Thu, Dec 3 - Thu, Dec 10
United Airlines Logo
5:44 pm - 12:10 pm
BOI
-
LIR
18h 26m
2 stops
United Airlines Logo
1:20 pm - 9:35 am
LIR
-
BOI
20h 15m
2 stops
$605United Airlines
Sun, Aug 23 - Sun, Aug 30
Alaska Airlines Logo
11:25 am - 6:22 am
BOI
-
LIR
17h 57m
2 stops
Alaska Airlines Logo
11:22 am - 10:55 pm
LIR
-
BOI
12h 33m
1 stop
$608Alaska Airlines
Thu, Dec 3 - Thu, Dec 10
American Airlines Logo
1:50 pm - 1:18 pm
BOI
-
LIR
23h 28m
2 stops
American Airlines Logo
2:47 pm - 2:31 pm
LIR
-
BOI
23h 44m
2 stops
$610American Airlines
Wed, Sep 16 - Wed, Sep 23
American Airlines Logo
7:02 am - 1:47 pm
BOI
-
LIR
30h 45m
1 stop
American Airlines Logo
2:47 pm - 1:22 pm
LIR
-
BOI
22h 35m
2 stops
$623American Airlines
Wed, Sep 16 - Wed, Sep 23
Delta Logo
11:10 pm - 12:00 pm
BOI
-
LIR
12h 50m
1 stop
Delta Logo
1:25 pm - 9:48 am
LIR
-
BOI
20h 23m
2 stops
$634Delta
Mon, Aug 3 - Wed, Sep 2

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United Airlines flights from Boise to Costa Rica

Our best United Airlines deals on Boise to Costa Rica flight tickets
United Airlines
Oct 24
BOI6:50 pmBoise Air Term. Gowen Fld
12h 25m
1 stop
SJO7:15 amSan José Juan Santamaria Intl
Oct 31
SJO8:40 amSan José Juan Santamaria Intl
12h 39m
1 stop
BOI9:19 pmBoise Air Term. Gowen Fld
$507
United Airlines
Oct 24
BOI6:50 pmBoise Air Term. Gowen Fld
12h 25m
1 stop
SJO7:15 amSan José Juan Santamaria Intl
Oct 31
SJO5:40 amSan José Juan Santamaria Intl
15h 39m
2 stops
BOI9:19 pmBoise Air Term. Gowen Fld
$512
United Airlines
Sep 5
BOI7:05 pmBoise Air Term. Gowen Fld
17h 16m
2 stops
SJO12:21 pmSan José Juan Santamaria Intl
Sep 13
SJO8:45 amSan José Juan Santamaria Intl
10h 34m
1 stop
BOI7:19 pmBoise Air Term. Gowen Fld
$540

Alaska Airlines flights from Boise to Costa Rica

Our best Alaska Airlines deals on Boise to Costa Rica flight tickets
Alaska Airlines
Dec 3
BOI6:51 pmBoise Air Term. Gowen Fld
10h 31m
1 stop
LIR6:22 amLiberia
Dec 10
LIR11:22 amLiberia
12h 33m
1 stop
BOI10:55 pmBoise Air Term. Gowen Fld
$603
Alaska Airlines
Dec 3
BOI11:25 amBoise Air Term. Gowen Fld
17h 57m
2 stops
LIR6:22 amLiberia
Dec 10
LIR11:22 amLiberia
12h 33m
1 stop
BOI10:55 pmBoise Air Term. Gowen Fld
$608
Alaska Airlines
Jan 5
BOI6:51 pmBoise Air Term. Gowen Fld
10h 29m
1 stop
LIR6:20 amLiberia
Jan 15
LIR10:00 amLiberia
13h 55m
1 stop
BOI10:55 pmBoise Air Term. Gowen Fld
$618

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 July 14, 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

Thu 9/17

7:05 am-11:15 pm

2 stops16h 10m

San José Juan Santamaria Intl

Tue 9/22

5:45 am-11:00 pm

2 stops17h 15m

$450

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Wed 9/2

6:47 pm-11:15 pm

2 stops28h 28m

San José Juan Santamaria Intl

Wed 9/9

5:05 am-11:00 pm

2 stops17h 55m

$467

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Sat 9/5

7:05 am-11:15 pm

2 stops16h 10m

San José Juan Santamaria Intl

Sun 9/13

12:40 pm-12:33 pm

3 stops23h 53m

$468

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Sun 8/2

5:30 am-12:00 pm

2 stops30h 30m

Liberia

Wed 9/2

1:25 pm-9:48 am

2 stops20h 23m

$585
Quickest round-trip

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Thu 12/3

6:51 pm-6:22 am

1 stop10h 31m

Liberia

Thu 12/10

11:22 am-10:55 pm

1 stop12h 33m

$603

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Sun 8/23

5:44 pm-12:10 pm

2 stops18h 26m

Liberia

Sun 8/30

1:20 pm-9:35 am

2 stops20h 15m

$605

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Thu 12/3

11:25 am-6:22 am

2 stops17h 57m

Liberia

Thu 12/10

11:22 am-10:55 pm

1 stop12h 33m

$608

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Wed 9/16

1:50 pm-1:18 pm

2 stops23h 28m

Liberia

Wed 9/23

2:47 pm-2:31 pm

2 stops23h 44m

$610

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Wed 9/16

7:02 am-1:47 pm

1 stop30h 45m

Liberia

Wed 9/23

2:47 pm-1:22 pm

2 stops22h 35m

$623

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Mon 8/3

11:10 pm-12:00 pm

1 stop12h 50m

Liberia

Wed 9/2

1:25 pm-9:48 am

2 stops20h 23m

$634

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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 $562 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 $394 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 08m

Direct flights

None
The fastest flight from Boise to Costa Rica takes 8h 08m
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
7.8
8,467 reviews
Search Delta flights
American AirlinesPriceFrom $279Free CancellationRating
7.1
11,808 reviews
Search American Airlines flights
United AirlinesPriceFrom $315Free CancellationRating
7.4
9,991 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $371Free CancellationRating
7.9
12,652 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $454Free CancellationRating
8.0
4,246 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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