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Cheap flights from Boise to Costa Rica from $146

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 11/4. 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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Cheap round-trip flights

Alaska Airlines Logo
5:54 am - 12:38 amBOI-SJO
17h 44m2 stops
Alaska Airlines Logo
1:55 am - 1:40 pmSJO-BOI
12h 45m1 stop
$282Alaska Airlines
Find Deal
Tue, Nov 11 - Mon, Nov 17
Alaska Airlines Logo
5:54 am - 12:38 amBOI-SJO
17h 44m2 stops
Alaska Airlines Logo
1:55 am - 11:02 pmSJO-BOI
22h 07m1 stop
$288Alaska Airlines
Find Deal
Tue, Nov 11 - Sun, Nov 16
United Airlines Logo
7:09 pm - 7:15 amBOI-SJO
12h 06m1 stop
United Airlines Logo
8:37 am - 11:44 pmSJO-BOI
15h 07m1 stop
$298United Airlines
Find Deal
Mon, Sep 22 - Mon, Sep 29
Alaska Airlines Logo
5:54 am - 12:38 amBOI-SJO
17h 44m2 stops
Alaska Airlines Logo
1:55 am - 11:59 pmSJO-BOI
23h 04m2 stops
$302Alaska Airlines
Find Deal
Tue, Nov 11 - Sun, Nov 16
United Airlines Logo
2:40 pm - 8:32 amBOI-SJO
16h 52m1 stop
United Airlines Logo
8:45 am - 7:45 pmSJO-BOI
12h 00m2 stops
$318United Airlines
Find Deal
Tue, Nov 11 - Tue, Nov 18
Delta Logo
11:39 pm - 11:58 amBOI-SJO
12h 19m1 stop
Delta Logo
1:23 pm - 12:01 pmSJO-BOI
22h 38m2 stops
$320Delta
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Fri, Oct 24 - Fri, Oct 31
Delta Logo
11:42 am - 1:06 pmBOI-SJO
24h 24m2 stops
Delta Logo
7:00 am - 12:35 amSJO-BOI
18h 35m2 stops
$341Delta
Find Deal
Tue, Nov 11 - Tue, Nov 18
American Airlines Logo
7:00 am - 10:59 pmBOI-SJO
14h 59m1 stop
American Airlines Logo
6:22 am - 10:32 pmSJO-BOI
17h 10m1 stop
$377American Airlines
Find Deal
Thu, Nov 13 - Mon, Nov 17
American Airlines Logo
7:00 am - 9:17 pmBOI-SJO
13h 17m1 stop
American Airlines Logo
1:23 pm - 12:35 pmSJO-BOI
24h 12m2 stops
$381American Airlines
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Wed, Nov 5 - Wed, Nov 12
Southwest Logo
5:15 am - 8:30 pmBOI-SJO
14h 15m2 stops
Southwest Logo
9:00 am - 12:35 amSJO-BOI
16h 35m2 stops
$382Southwest
Find Deal
Wed, Nov 5 - Thu, Nov 13

Alaska Airlines flights from Boise to Costa Rica

Our best Alaska Airlines deals on Boise to Costa Rica flight tickets
Alaska Airlines
Nov 11
BOI5:54 amBoise Air Term. Gowen Fld
17h 44m
2 stops
SJO12:38 amSan José Juan Santamaria Intl
Nov 17
SJO1:55 amSan José Juan Santamaria Intl
12h 45m
1 stop
BOI1:40 pmBoise Air Term. Gowen Fld
$282
Find similar
Alaska Airlines
Nov 11
BOI5:54 amBoise Air Term. Gowen Fld
17h 44m
2 stops
SJO12:38 amSan José Juan Santamaria Intl
Nov 16
SJO1:55 amSan José Juan Santamaria Intl
22h 07m
1 stop
BOI11:02 pmBoise Air Term. Gowen Fld
$288
Find similar
Alaska Airlines
Nov 11
BOI5:54 amBoise Air Term. Gowen Fld
17h 44m
2 stops
SJO12:38 amSan José Juan Santamaria Intl
Nov 16
SJO1:55 amSan José Juan Santamaria Intl
23h 04m
2 stops
BOI11:59 pmBoise Air Term. Gowen Fld
$302
Find similar

United Airlines flights from Boise to Costa Rica

Our best United Airlines deals on Boise to Costa Rica flight tickets
United Airlines
Sep 22
BOI7:09 pmBoise Air Term. Gowen Fld
12h 06m
1 stop
SJO7:15 amSan José Juan Santamaria Intl
Sep 29
SJO8:37 amSan José Juan Santamaria Intl
15h 07m
1 stop
BOI11:44 pmBoise Air Term. Gowen Fld
$298
Find similar
United Airlines
Nov 11
BOI2:40 pmBoise Air Term. Gowen Fld
16h 52m
1 stop
SJO8:32 amSan José Juan Santamaria Intl
Nov 18
SJO8:45 amSan José Juan Santamaria Intl
12h 00m
2 stops
BOI7:45 pmBoise Air Term. Gowen Fld
$318
Find similar
United Airlines
Nov 11
BOI2:40 pmBoise Air Term. Gowen Fld
16h 52m
1 stop
SJO8:32 amSan José Juan Santamaria Intl
Nov 17
SJO9:40 amSan José Juan Santamaria Intl
10h 14m
1 stop
BOI6:54 pmBoise Air Term. Gowen Fld
$353
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 September 16, 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 11/11

5:54 am-12:38 am

2 stops17h 44m

San José Juan Santamaria Intl

Mon 11/17

1:55 am-1:40 pm

1 stop12h 45m

$282

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Tue 11/11

5:54 am-12:38 am

2 stops17h 44m

San José Juan Santamaria Intl

Sun 11/16

1:55 am-11:02 pm

1 stop22h 07m

$288

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Mon 9/22

7:09 pm-7:15 am

1 stop12h 06m

San José Juan Santamaria Intl

Mon 9/29

8:37 am-11:44 pm

1 stop15h 07m

$298

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Tue 11/11

5:54 am-12:38 am

2 stops17h 44m

San José Juan Santamaria Intl

Sun 11/16

1:55 am-11:59 pm

2 stops23h 04m

$302

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Tue 11/11

2:40 pm-8:32 am

1 stop16h 52m

San José Juan Santamaria Intl

Tue 11/18

8:45 am-7:45 pm

2 stops12h 00m

$318

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Fri 10/24

11:39 pm-11:58 am

1 stop12h 19m

San José Juan Santamaria Intl

Fri 10/31

1:23 pm-12:01 pm

2 stops22h 38m

$320

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Tue 11/11

11:42 am-1:06 pm

2 stops24h 24m

San José Juan Santamaria Intl

Tue 11/18

7:00 am-12:35 am

2 stops18h 35m

$341

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Thu 11/13

7:00 am-10:59 pm

1 stop14h 59m

San José Juan Santamaria Intl

Mon 11/17

6:22 am-10:32 pm

1 stop17h 10m

$377

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Wed 11/5

7:00 am-9:17 pm

1 stop13h 17m

San José Juan Santamaria Intl

Wed 11/12

1:23 pm-12:35 pm

2 stops24h 12m

$381

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Wed 11/5

5:15 am-8:30 pm

2 stops14h 15m

San José Juan Santamaria Intl

Thu 11/13

9:00 am-12:35 am

2 stops16h 35m

$382

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 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 August. Flight prices, which tend to average around $457, are often lower during this time because this is during the off-season. If you’re not able to fly to Costa Rica in August, then September is your next best option. Flight prices from Boise to Costa Rica during September average around $467.

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 weeks ahead of your departure date. In general, you can expect to find flights to Costa Rica for around $623 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 $386 on momondo.

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

You could potentially save up to 59% 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

Direct flights

None
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 $147Free CancellationRating
7.9
7,954 reviews
Search Delta flights
United AirlinesPriceFrom $365Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $429Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $439Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $557Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
Copa AirlinesPriceFrom $591Free CancellationRating
7.6
1,531 reviews
Search Copa Airlines 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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