What is the cheapest airline that flies from Idaho to Costa Rica?

United Airlines, Alaska Airlines, and Delta are the most popular carriers operating from Idaho to Costa Rica

What airlines fly to Costa Rica?

United Airlines, American Airlines and Alaska Airlines are the top three most popular airlines that fly to Costa Rica from Idaho according to our data. United Airlines is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Costa Rica. Keep in mind that there are 5 different airlines that fly to Costa Rica on a routine basis, so you have a few additional options to choose from.

How long is the flight from Idaho to Costa Rica?

Flight times vary depending on what airport in Idaho you fly out of and what airport in Costa Rica you fly into. For example, flying from Boise to San José takes 9h 03m on average. On the other hand, flying from Hailey to San José takes 16h 11m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

When did momondo last update prices for flights from Idaho to Costa Rica?

Prices for flights from Idaho to Costa Rica refresh daily.

How many operators does momondo search for flights from Idaho to Costa Rica?

The number of operators available for flights from Idaho to Costa Rica is 5 as of October 2025.

How old do you have to be to fly from Idaho to Costa Rica?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to Costa Rica.

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

The travel and health documents you'll need for your trip to Costa Rica may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Costa Rica. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$133 Cheap Flights from Idaho to Costa Rica in 2025/26

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Find the cheapest flights from Idaho to Costa Rica

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:10 pm - 1:15 pmGEG-SJO

19h 05m2 stops

9:40 am - 7:01 pmSJO-GEG

11h 21m1 stop

$298United Airlines

Find Deal

Sat, Jan 24 - Wed, Jan 28

7:00 pm - 8:32 amBOI-SJO

12h 32m1 stop

9:40 am - 11:28 pmSJO-BOI

14h 48m1 stop

$298United Airlines

Find Deal

Wed, Nov 12 - Wed, Nov 19

7:20 am - 11:43 pmBOI-SJO

15h 23m1 stop

6:38 am - 7:25 pmSJO-BOI

13h 47m1 stop

$303American Airlines

Find Deal

Sat, Jan 24 - Sun, Feb 1

6:00 am - 11:43 pmGEG-SJO

15h 43m1 stop

2:54 pm - 6:49 pmSJO-GEG

29h 55m1 stop

$306American Airlines

Find Deal

Sat, Jan 24 - Wed, Jan 28

8:08 am - 12:38 amBOI-SJO

15h 30m1 stop

1:55 am - 1:40 pmSJO-BOI

12h 45m1 stop

$316Alaska Airlines

Find Deal

Tue, Nov 11 - Mon, Nov 17

8:08 am - 12:38 amBOI-SJO

15h 30m1 stop

1:55 am - 6:02 pmSJO-BOI

17h 07m2 stops

$320Alaska Airlines

Find Deal

Tue, Nov 11 - Tue, Nov 18

7:05 am - 11:40 pmBOI-SJO

15h 35m2 stops

9:35 am - 1:35 pmSJO-BOI

29h 00m2 stops

$382Multiple Airlines

Find Deal

Mon, Jan 12 - Thu, Jan 22

7:05 am - 11:40 pmBOI-SJO

15h 35m2 stops

8:05 pm - 11:02 pmSJO-BOI

27h 57m3 stops

$385Multiple Airlines

Find Deal

Mon, Jan 12 - Thu, Jan 22

11:35 pm - 1:05 pmBOI-SJO

12h 30m1 stop

7:00 am - 10:25 pmSJO-BOI

16h 25m1 stop

$396Delta

Find Deal

Thu, Nov 13 - Sun, Nov 16

11:35 pm - 1:05 pmBOI-SJO

12h 30m1 stop

7:00 am - 12:07 amSJO-BOI

18h 07m2 stops

$400Delta

Find Deal

Thu, Nov 13 - Sun, Nov 16

United Airlines flights from Idaho to Costa Rica

Our best United Airlines deals on Idaho to Costa Rica flight tickets

United Airlines

Jan 24

GEG4:10 pmSpokane

19h 05m

2 stops

SJO1:15 pmSan José Juan Santamaria Intl

Jan 28

SJO9:40 amSan José Juan Santamaria Intl

11h 21m

1 stop

GEG7:01 pmSpokane

$298

Find similar

United Airlines

Jan 24

GEG4:10 pmSpokane

19h 05m

2 stops

SJO1:15 pmSan José Juan Santamaria Intl

Jan 28

SJO6:30 amSan José Juan Santamaria Intl

16h 52m

2 stops

GEG9:22 pmSpokane

$302

Find similar

United Airlines

Nov 12

BOI6:15 amBoise Air Term. Gowen Fld

13h 24m

2 stops

SJO8:39 pmSan José Juan Santamaria Intl

Nov 18

SJO8:45 amSan José Juan Santamaria Intl

15h 43m

2 stops

BOI11:28 pmBoise Air Term. Gowen Fld

$317

Find similar

Alaska Airlines flights from Idaho to Costa Rica

Our best Alaska Airlines deals on Idaho to Costa Rica flight tickets

Alaska Airlines

Nov 11

BOI8:08 amBoise Air Term. Gowen Fld

15h 30m

1 stop

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

$316

Find similar

Alaska Airlines

Nov 11

BOI8:08 amBoise Air Term. Gowen Fld

15h 30m

1 stop

SJO12:38 amSan José Juan Santamaria Intl

Nov 18

SJO1:55 amSan José Juan Santamaria Intl

15h 22m

2 stops

BOI4:17 pmBoise Air Term. Gowen Fld

$320

Find similar

Alaska Airlines

Nov 11

BOI8:08 amBoise Air Term. Gowen Fld

15h 30m

1 stop

SJO12:38 amSan José Juan Santamaria Intl

Nov 18

SJO1:55 amSan José Juan Santamaria Intl

22h 07m

1 stop

BOI11:02 pmBoise Air Term. Gowen Fld

$322

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SpokaneSan José

GEG - SJO

GEGSJO

Spokane

Sat 1/24

4:10 pm-1:15 pm

2 stops19h 05m

San José Juan Santamaria Intl

Wed 1/28

9:40 am-7:01 pm

1 stop11h 21m

$298

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Wed 11/12

7:00 pm-8:32 am

1 stop12h 32m

San José Juan Santamaria Intl

Wed 11/19

9:40 am-11:28 pm

1 stop14h 48m

$298

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Sat 1/24

7:20 am-11:43 pm

1 stop15h 23m

San José Juan Santamaria Intl

Sun 2/1

6:38 am-7:25 pm

1 stop13h 47m

$303

SpokaneSan José

GEG - SJO

GEGSJO

Spokane

Sat 1/24

6:00 am-11:43 pm

1 stop15h 43m

San José Juan Santamaria Intl

Wed 1/28

2:54 pm-6:49 pm

1 stop29h 55m

$306

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Tue 11/11

8:08 am-12:38 am

1 stop15h 30m

San José Juan Santamaria Intl

Mon 11/17

1:55 am-1:40 pm

1 stop12h 45m

$316

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Tue 11/11

8:08 am-12:38 am

1 stop15h 30m

San José Juan Santamaria Intl

Tue 11/18

1:55 am-6:02 pm

2 stops17h 07m

$320

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Mon 1/12

7:05 am-11:40 pm

2 stops15h 35m

San José Juan Santamaria Intl

Thu 1/22

9:35 am-1:35 pm

2 stops29h 00m

$382

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Mon 1/12

7:05 am-11:40 pm

2 stops15h 35m

San José Juan Santamaria Intl

Thu 1/22

8:05 pm-11:02 pm

3 stops27h 57m

$385

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Thu 11/13

11:35 pm-1:05 pm

1 stop12h 30m

San José Juan Santamaria Intl

Sun 11/16

7:00 am-10:25 pm

1 stop16h 25m

$396

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Thu 11/13

11:35 pm-1:05 pm

1 stop12h 30m

San José Juan Santamaria Intl

Sun 11/16

7:00 am-12:07 am

2 stops18h 07m

$400

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Idaho 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

Prices

Airlines

Other information

What is the cheapest month to fly to Costa Rica?

The cheapest month to fly to Costa Rica from Idaho is in January. Flight prices, which tend to average around $371, 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 August is your next best option. Flight prices from Idaho to Costa Rica during August average around $457.

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 Idaho. 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 Idaho 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 Idaho when booking weeks ahead of your departure date. In general, you can expect to find flights to Costa Rica for around $600 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Costa Rica from Idaho for as low as $386 on momondo.

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

You could potentially save up to 48% on your flight if you consider stops on a Idaho to Costa Rica flight.

Cheap Idaho to Costa Rica flight deals and tips

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

Direct flights	None

There are no direct flights from Idaho to Costa Rica. There are no popular flight routes from Idaho to Costa Rica.

Search flight deals

When did momondo last update prices for flights from Idaho to Costa Rica?
Prices for flights from Idaho to Costa Rica refresh daily.
How many operators does momondo search for flights from Idaho to Costa Rica?
The number of operators available for flights from Idaho to Costa Rica is 5 as of October 2025.
How old do you have to be to fly from Idaho to Costa Rica?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to Costa Rica.
What documentation or ID do you need to fly to Costa Rica?
The travel and health documents you'll need for your trip to Costa Rica may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Costa Rica. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Idaho to Costa Rica

Compare and see reviews for airlines that fly from Idaho to Costa Rica with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $141	Free Cancellation	Rating 7.9 7,998 reviews	Search Delta flights
American Airlines	PriceFrom $317	Free Cancellation	Rating 7.2 11,034 reviews	Search American Airlines flights
United Airlines	PriceFrom $323	Free Cancellation	Rating 7.4 8,997 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $376	Free Cancellation	Rating 8.0 11,220 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $477	Free Cancellation	Rating 8.0 4,243 reviews	Search Southwest flights

Why use momondo?

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

It is quick and easy to find Idaho to Costa Rica flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Costa Rica that suits you.

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

Yes. momondo allows you to filter the results for Idaho to Costa Rica flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Idaho and Costa Rica by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to Costa Rica, momondo offers a useful price alert feature which will track prices for flights to Costa Rica from Idaho and alert you when they change.