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

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

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 10h 21m on average. On the other hand, flying from Twin Falls to San José takes 15h 02m 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.

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 59% of people opting to fly with this airline when traveling to Costa Rica. Keep in mind that there are 4 different airlines that fly to Costa Rica on a routine basis, so you have a few additional options to choose from.

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 4 as of October 2026.

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.

$259 Cheap Flights from Idaho to Costa Rica in 2026/27

Discover deals from 900+ travel sites with momondo.

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.

7:10 pm - 8:32 amBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

12h 22m1 stop San Francisco

9:40 am - 9:15 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

12h 35m1 stop San Francisco

$561United Airlines

Sat, Nov 7 - Sat, Nov 14

2:41 pm - 1:01 pmBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

21h 20m2 stops Dallas/Fort Worth Miami

3:03 pm - 11:49 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

9h 46m1 stop Dallas/Fort Worth

$565American Airlines

Sat, Nov 14 - Thu, Nov 19

2:41 pm - 1:01 pmBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

21h 20m2 stops Dallas/Fort Worth Miami

6:00 am - 11:49 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

18h 49m2 stops Miami Dallas/Fort Worth

$565American Airlines

Sat, Nov 14 - Thu, Nov 19

4:35 pm - 12:30 pmBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

18h 55m2 stops Phoenix Sky Harbor Intl Charlotte Douglas

12:30 am - 11:28 amSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

11h 58m1 stop Dallas/Fort Worth

$565American Airlines

Mon, Feb 8 - Thu, Feb 18

6:30 am - 10:00 pmBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

14h 30m1 stop Denver Intl

7:30 am - 5:59 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

11h 29m1 stop Denver Intl

$581United Airlines

Sat, Nov 28 - Sat, Dec 5

6:20 am - 4:10 pmBOI Boise Air Term. Gowen Fld-LIR Liberia

8h 50m1 stop Denver Intl

1:00 pm - 9:16 pmLIR Liberia-BOI Boise Air Term. Gowen Fld

9h 16m1 stop Denver Intl

$599United Airlines

Tue, Feb 9 - Thu, Feb 18

7:25 am - 11:25 pmBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

15h 00m1 stop Los Angeles

1:45 am - 1:44 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

12h 59m1 stop Los Angeles

$606Alaska Airlines

Sun, Feb 7 - Wed, Feb 17

7:25 am - 11:25 pmBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

15h 00m1 stop Los Angeles

1:45 am - 1:44 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

12h 59m1 stop Los Angeles

$606Alaska Airlines

Sun, Feb 7 - Tue, Feb 16

8:30 pm - 2:50 pmBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

17h 20m2 stops Las Vegas Harry Reid Intl Denver Intl

2:10 pm - 1:10 amSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

12h 00m2 stops Houston Hobby Phoenix Sky Harbor Intl

$886Southwest

Fri, Nov 20 - Tue, Nov 24

6:50 pm - 12:20 pmBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

16h 30m2 stops Las Vegas Harry Reid Intl Houston Hobby

2:45 pm - 10:55 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

9h 10m1 stop Denver Intl

$1,750Southwest

Wed, Dec 23 - Sat, Jan 2

Cheap last minute flights

Enter your travel dates to find the best prices.

10:34 am - 12:00 pmBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

25h 26m2 stops Seattle/Tacoma Intl Atlanta Hartsfield-Jackson

1:25 pm - 10:42 amSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

21h 17m2 stops Atlanta Hartsfield-Jackson Salt Lake City

$615Delta

Sat, Oct 17 - Thu, Oct 29

3:00 pm - 12:00 pmBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

21h 00m2 stops Minneapolis St Paul Atlanta Hartsfield-Jackson

1:25 pm - 9:54 amSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

20h 29m2 stops Atlanta Hartsfield-Jackson Seattle/Tacoma Intl

$615Delta

Sat, Oct 17 - Thu, Oct 29

2:41 pm - 12:00 pmBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

21h 19m2 stops Dallas/Fort Worth Miami

3:01 pm - 1:51 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

22h 50m2 stops Miami Dallas/Fort Worth

$633American Airlines

Wed, Oct 21 - Mon, Oct 26

7:00 am - 8:05 pmBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

13h 05m2 stops Dallas/Fort Worth Miami

3:01 pm - 1:22 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

22h 21m2 stops Miami Phoenix Sky Harbor Intl

$637American Airlines

Sat, Oct 17 - Thu, Oct 29

2:41 pm - 2:00 pmBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

23h 19m1 stop Dallas/Fort Worth

3:01 pm - 2:33 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

23h 32m2 stops Miami Chicago O'Hare Intl

$638American Airlines

Sat, Oct 17 - Thu, Oct 29

7:00 am - 2:00 pmBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

31h 00m1 stop Dallas/Fort Worth

3:01 pm - 1:51 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

22h 50m2 stops Miami Dallas/Fort Worth

$638American Airlines

Sat, Oct 17 - Thu, Oct 29

6:50 pm - 7:15 amBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

12h 25m1 stop San Francisco

1:25 pm - 1:45 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

24h 20m2 stops Houston George Bush Intcntl Denver Intl

$682United Airlines

Sat, Oct 17 - Thu, Oct 29

6:50 pm - 7:15 amBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

12h 25m1 stop San Francisco

8:40 am - 4:42 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

32h 02m1 stop San Francisco

$682United Airlines

Sat, Oct 17 - Thu, Oct 29

3:00 pm - 12:00 pmBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

21h 00m2 stops Minneapolis St Paul Atlanta Hartsfield-Jackson

1:25 pm - 2:47 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

25h 22m2 stops Atlanta Hartsfield-Jackson Los Angeles

$699Delta

Sat, Oct 17 - Thu, Oct 29

2:14 pm - 7:15 amBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

17h 01m1 stop San Francisco

11:35 am - 10:59 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

11h 24m2 stops Houston George Bush Intcntl Denver Intl

$710United Airlines

Wed, Oct 21 - Mon, Oct 26

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

United Airlines flights from Idaho to Costa Rica

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

United Airlines

Nov 7

BOI7:10 pmBoise Air Term. Gowen Fld

12h 22m

1 stop

SJO8:32 amSan José Juan Santamaria Intl

Nov 14

SJO9:40 amSan José Juan Santamaria Intl

12h 35m

1 stop

BOI9:15 pmBoise Air Term. Gowen Fld

$561

United Airlines

Nov 28

BOI6:30 amBoise Air Term. Gowen Fld

14h 30m

1 stop

SJO10:00 pmSan José Juan Santamaria Intl

Dec 5

SJO7:30 amSan José Juan Santamaria Intl

11h 29m

1 stop

BOI5:59 pmBoise Air Term. Gowen Fld

$581

United Airlines

Feb 9

BOI6:20 amBoise Air Term. Gowen Fld

8h 50m

1 stop

LIR4:10 pmLiberia

Feb 18

LIR1:00 pmLiberia

9h 16m

1 stop

BOI9:16 pmBoise Air Term. Gowen Fld

$599

American Airlines flights from Idaho to Costa Rica

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

American Airlines

Nov 14

BOI2:41 pmBoise Air Term. Gowen Fld

21h 20m

2 stops

SJO1:01 pmSan José Juan Santamaria Intl

Nov 19

SJO3:03 pmSan José Juan Santamaria Intl

9h 46m

1 stop

BOI11:49 pmBoise Air Term. Gowen Fld

$565

American Airlines

Nov 14

BOI2:41 pmBoise Air Term. Gowen Fld

22h 05m

1 stop

SJO1:46 pmSan José Juan Santamaria Intl

Nov 19

SJO3:03 pmSan José Juan Santamaria Intl

9h 46m

1 stop

BOI11:49 pmBoise Air Term. Gowen Fld

$619

American Airlines

Oct 21

BOI2:41 pmBoise Air Term. Gowen Fld

21h 19m

2 stops

SJO12:00 pmSan José Juan Santamaria Intl

Oct 26

SJO3:01 pmSan José Juan Santamaria Intl

22h 50m

2 stops

BOI1:51 pmBoise Air Term. Gowen Fld

$633

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseSan José

BOI Boise Air Term. Gowen Fld - SJO San José Juan Santamaria Intl

BOISJO

Boise Air Term. Gowen Fld

Sat 11/7

7:10 pm-8:32 am

1 stop12h 22m

San José Juan Santamaria Intl

Sat 11/14

9:40 am-9:15 pm

1 stop12h 35m

$561

BoiseSan José

BOI Boise Air Term. Gowen Fld - SJO San José Juan Santamaria Intl

BOISJO

Boise Air Term. Gowen Fld

Sat 11/14

2:41 pm-1:01 pm

2 stops21h 20m

San José Juan Santamaria Intl

Thu 11/19

3:03 pm-11:49 pm

1 stop9h 46m

$565

BoiseSan José

BOI Boise Air Term. Gowen Fld - SJO San José Juan Santamaria Intl

BOISJO

Boise Air Term. Gowen Fld

Sat 11/14

2:41 pm-1:01 pm

2 stops21h 20m

San José Juan Santamaria Intl

Thu 11/19

6:00 am-11:49 pm

2 stops18h 49m

$565

BoiseSan José

BOI Boise Air Term. Gowen Fld - SJO San José Juan Santamaria Intl

BOISJO

Boise Air Term. Gowen Fld

Mon 2/8

4:35 pm-12:30 pm

2 stops18h 55m

San José Juan Santamaria Intl

Thu 2/18

12:30 am-11:28 am

1 stop11h 58m

$565

BoiseSan José

BOI Boise Air Term. Gowen Fld - SJO San José Juan Santamaria Intl

BOISJO

Boise Air Term. Gowen Fld

Sat 11/28

6:30 am-10:00 pm

1 stop14h 30m

San José Juan Santamaria Intl

Sat 12/5

7:30 am-5:59 pm

1 stop11h 29m

$581

Quickest round-trip

BoiseLiberia

BOI Boise Air Term. Gowen Fld - LIR Liberia

BOILIR

Boise Air Term. Gowen Fld

Tue 2/9

6:20 am-4:10 pm

1 stop8h 50m

Liberia

Thu 2/18

1:00 pm-9:16 pm

1 stop9h 16m

$599

BoiseSan José

BOI Boise Air Term. Gowen Fld - SJO San José Juan Santamaria Intl

BOISJO

Boise Air Term. Gowen Fld

Sun 2/7

7:25 am-11:25 pm

1 stop15h 00m

San José Juan Santamaria Intl

Wed 2/17

1:45 am-1:44 pm

1 stop12h 59m

$606

BoiseSan José

BOI Boise Air Term. Gowen Fld - SJO San José Juan Santamaria Intl

BOISJO

Boise Air Term. Gowen Fld

Sun 2/7

7:25 am-11:25 pm

1 stop15h 00m

San José Juan Santamaria Intl

Tue 2/16

1:45 am-1:44 pm

1 stop12h 59m

$606

BoiseSan José

BOI Boise Air Term. Gowen Fld - SJO San José Juan Santamaria Intl

BOISJO

Boise Air Term. Gowen Fld

Fri 11/20

8:30 pm-2:50 pm

2 stops17h 20m

San José Juan Santamaria Intl

Tue 11/24

2:10 pm-1:10 am

2 stops12h 00m

$886

BoiseSan José

BOI Boise Air Term. Gowen Fld - SJO San José Juan Santamaria Intl

BOISJO

Boise Air Term. Gowen Fld

Wed 12/23

6:50 pm-12:20 pm

2 stops16h 30m

San José Juan Santamaria Intl

Sat 1/2

2:45 pm-10:55 pm

1 stop9h 10m

$1,750

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 April. Flight prices, which tend to average around $522, are often lower during this time because this is during the off-season. If you’re not able to fly to Costa Rica in April, then August is your next best option. Flight prices from Idaho to Costa Rica during August average around $523.

How far in advance should I book a flight from Idaho 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 $661 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 $428 on momondo.

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

You could potentially save up to 26% 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

Best Price Found	$259
Fastest flight time	8h 10m
Direct flights	None

The best one-way flight to Costa Rica from Idaho in the past 72 hours is $259. The best round-trip flight deal from Idaho to Costa Rica found on momondo in the last 72 hours is $561.

The fastest flight from Idaho to Costa Rica takes 8h 10m

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

Search flight deals

Frequently asked questions about flying from Idaho to Costa Rica

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 4 as of October 2026.
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
United Airlines	PriceFrom $353	Free Cancellation	Rating 7.4 10,364 reviews	Search United Airlines flights
American Airlines	PriceFrom $404	Free Cancellation	Rating 7.0 12,171 reviews	Search American Airlines flights
Southwest	PriceFrom $454	Free Cancellation	Rating 7.9 4,213 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $485	Free Cancellation	Rating 7.9 13,070 reviews	Search Alaska Airlines 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.

An easier way to manage your Costa Rica trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Sat 11/14

Sat 11/21

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Costa Rica

Popular cities

Other flights from Idaho

Other flights to Costa Rica

Airlines

Cabin classes

Complete your trip

Feeling lucky

Popular cities in Costa Rica

Flights to San Joséfrom $170

Flights to Liberiafrom $290

Flights to Limon

Flights to Tamarindo

Flights to Tortuguero

Flights to Golfito

Flights to Tambor

Cheap flights from Idaho to Costa Rica from $259

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho to Costa Rica departing on 11/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Idaho to Costa Rica

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

United Airlines flights from Idaho to Costa Rica

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

American Airlines flights from Idaho to Costa Rica

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

momondo Fare Finder

Use the filters below to find and compare flights from Idaho to Costa Rica that are best for you.

See travel insights to Costa Rica from

How to get the cheapest flight ticket from Idaho to Costa Rica

What is the cheapest month to fly to Costa Rica?

How far in advance should I book a flight from Idaho to Costa Rica?

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

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

What airlines fly to Costa Rica?

How long is the flight from Idaho to Costa Rica?

Cheap Idaho to Costa Rica flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Idaho to Costa Rica

Best airlines flying from Idaho to Costa Rica

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

Why use momondo?

An easier way to manage your Costa Rica trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Costa Rica

Popular cities in Costa Rica

Popular flights according to clicks in the last 7 days on momondo

Idaho flight routes

According to popular flight searches on momondo this year

Costa Rica flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Costa Rica

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Costa Rica

List of cabin classes available on flights landing in Costa Rica. Availability may vary depending on flight origin and airline.

Complete your trip to Costa Rica

Explore popular destinations other users love

According to popular flight searches on momondo this year