What is the cheapest airline that flies from Boise Air Term. Gowen Fld to Costa Rica?

United Airlines is the most popular carrier operating from Boise Air Term. Gowen Fld 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 Boise according to our data. United Airlines is the first choice among our users, with 49% 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 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?

As of September 2026, there are 4 operators available to choose from 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.

$239 Cheap Flights from Boise to Costa Rica in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Boise to Costa Rica

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

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

12h 25m1 stop San Francisco

8:45 am - 11:59 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

15h 14m1 stop San Francisco

$520United Airlines

Thu, Oct 15 - Thu, Oct 22

7:10 pm - 11:25 amBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

15h 15m2 stops San Francisco Houston George Bush Intcntl

7:30 am - 6:03 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

11h 33m1 stop Denver Intl

$520United Airlines

Sun, Nov 1 - Sun, Nov 8

2:02 pm - 2:00 pmBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

23h 58m2 stops Phoenix Sky Harbor Intl 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

$525American Airlines

Tue, Oct 13 - Tue, Oct 20

2:02 pm - 2:00 pmBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

23h 58m2 stops Phoenix Sky Harbor Intl Dallas/Fort Worth

1:00 pm - 1:51 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

24h 51m1 stop Dallas/Fort Worth

$536American Airlines

Tue, Oct 13 - Tue, Oct 20

6:00 am - 7:40 pmBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

13h 40m2 stops Las Vegas Harry Reid Intl Houston Hobby

9:00 am - 10:40 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

13h 40m2 stops Orlando Las Vegas Harry Reid Intl

$546Southwest

Sat, Oct 17 - Sat, Oct 24

8:18 am - 11:15 pmBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

13h 57m2 stops Los Angeles Los Angeles Guatemala City La Aurora

5:35 am - 10:55 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

18h 20m2 stops Guatemala City La Aurora Los Angeles Los Angeles

$548Multiple Airlines

Sat, Feb 13 - Sun, Feb 21

8:18 am - 11:15 pmBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

13h 57m2 stops Los Angeles Los Angeles Guatemala City La Aurora

5:35 am - 10:55 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

18h 20m2 stops Guatemala City La Aurora Los Angeles Los Angeles

$548Multiple Airlines

Sat, Feb 20 - Sun, Feb 28

5:40 am - 7:40 pmBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

14h 00m2 stops Phoenix Sky Harbor Intl Houston Hobby

1:30 pm - 1:05 amSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

11h 35m2 stops Houston Hobby Las Vegas Harry Reid Intl

$598Southwest

Thu, Oct 15 - Thu, Oct 22

6:31 pm - 8:31 pmBOI Boise Air Term. Gowen Fld-LIR Liberia

25h 00m1 stop Los Angeles Los Angeles

8:33 am - 10:50 pmLIR Liberia-BOI Boise Air Term. Gowen Fld

15h 17m1 stop Los Angeles Los Angeles

$609Alaska Airlines

Sat, Jan 23 - Thu, Jan 28

6:31 pm - 8:31 pmBOI Boise Air Term. Gowen Fld-LIR Liberia

25h 00m1 stop Los Angeles Los Angeles

8:33 am - 9:42 pmLIR Liberia-BOI Boise Air Term. Gowen Fld

14h 09m2 stops Los Angeles Los Angeles San Francisco

$613Alaska Airlines

Sat, Jan 23 - Thu, Jan 28

Cheap last minute flights

Enter your travel dates to find the best prices.

10:14 am - 11:40 pmBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

13h 26m2 stops San Francisco San Salvador El Salvador Intl

7:45 pm - 10:27 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

26h 42m2 stops San Salvador El Salvador Intl San Francisco

$816Multiple Airlines

Fri, Sep 4 - Tue, Sep 8

10:14 am - 11:45 amBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

25h 31m3 stops San Francisco San Salvador El Salvador Intl Panama City Tocumen Intl

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

44h 29m2 stops Mexico City Benito Juarez Seattle/Tacoma Intl

$849Multiple Airlines

Fri, Sep 4 - Tue, Sep 8

10:14 am - 11:45 amBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

25h 31m3 stops San Francisco San Salvador El Salvador Intl Panama City Tocumen Intl

12:40 pm - 12:33 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

23h 53m3 stops Panama City Tocumen Intl San Salvador El Salvador Intl Los Angeles Los Angeles

$870Multiple Airlines

Fri, Sep 4 - Tue, Sep 8

10:14 am - 11:40 pmBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

13h 26m2 stops San Francisco San Salvador El Salvador Intl

9:40 am - 10:27 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

36h 47m2 stops San Salvador El Salvador Intl San Francisco

$873Multiple Airlines

Thu, Sep 3 - Fri, Sep 4

6:47 pm - 11:30 amBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

16h 43m2 stops Los Angeles Los Angeles San Salvador El Salvador Intl

7:45 pm - 10:27 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

26h 42m2 stops San Salvador El Salvador Intl San Francisco

$909Multiple Airlines

Sat, Sep 5 - Sat, Sep 12

6:47 pm - 11:45 amBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

16h 58m3 stops Los Angeles Los Angeles San Salvador El Salvador Intl Panama City Tocumen Intl

7:45 pm - 10:27 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

26h 42m2 stops San Salvador El Salvador Intl San Francisco

$910Multiple Airlines

Sat, Sep 5 - Sat, Sep 12

7:05 pm - 7:15 amBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

12h 10m1 stop San Francisco

1:25 pm - 9:35 amSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

20h 10m2 stops Houston George Bush Intcntl Denver Intl

$942Avianca

Sat, Sep 5 - Sat, Sep 12

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

25h 00m1 stop San Francisco

1:25 pm - 1:35 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

24h 10m2 stops Houston George Bush Intcntl Denver Intl

$1,015United Airlines

Fri, Sep 4 - Tue, Sep 8

5:00 am - 7:37 pmBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

14h 37m2 stops Denver Intl Houston George Bush Intcntl

8:45 am - 3:31 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

30h 46m1 stop San Francisco

$1,200United Airlines

Thu, Sep 3 - Fri, Sep 4

12:12 pm - 1:52 pmBOI Boise Air Term. Gowen Fld-SJO San José Juan Santamaria Intl

25h 40m1 stop Dallas/Fort Worth

1:03 pm - 10:11 pmSJO San José Juan Santamaria Intl-BOI Boise Air Term. Gowen Fld

9h 08m1 stop Dallas/Fort Worth

$1,390American Airlines

Fri, Sep 4 - Tue, Sep 8

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American Airlines flights from Boise to Costa Rica

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

American Airlines

Oct 13

BOI2:02 pmBoise Air Term. Gowen Fld

23h 58m

2 stops

SJO2:00 pmSan José Juan Santamaria Intl

Oct 20

SJO3:01 pmSan José Juan Santamaria Intl

22h 50m

2 stops

BOI1:51 pmBoise Air Term. Gowen Fld

$525

American Airlines

Oct 13

BOI2:02 pmBoise Air Term. Gowen Fld

23h 58m

2 stops

SJO2:00 pmSan José Juan Santamaria Intl

Oct 20

SJO1:00 pmSan José Juan Santamaria Intl

24h 51m

1 stop

BOI1:51 pmBoise Air Term. Gowen Fld

$536

American Airlines

Sep 26

BOI3:21 pmBoise Air Term. Gowen Fld

22h 36m

2 stops

SJO1:57 pmSan José Juan Santamaria Intl

Oct 3

SJO1:00 pmSan José Juan Santamaria Intl

9h 27m

1 stop

BOI10:27 pmBoise Air Term. Gowen Fld

$575

Delta flights from Boise to Costa Rica

Our best Delta deals on Boise to Costa Rica flight tickets

Delta

Oct 30

BOI3:00 pmBoise Air Term. Gowen Fld

21h 00m

2 stops

SJO12:00 pmSan José Juan Santamaria Intl

Nov 10

SJO2:37 pmSan José Juan Santamaria Intl

22h 56m

2 stops

BOI12:33 pmBoise Air Term. Gowen Fld

$563

Delta

Nov 1

BOI11:32 amBoise Air Term. Gowen Fld

24h 28m

2 stops

SJO1:00 pmSan José Juan Santamaria Intl

Nov 10

SJO2:37 pmSan José Juan Santamaria Intl

22h 56m

2 stops

BOI12:33 pmBoise Air Term. Gowen Fld

$589

Delta

Sep 26

BOI11:03 amBoise Air Term. Gowen Fld

24h 51m

2 stops

SJO11:54 amSan José Juan Santamaria Intl

Oct 3

SJO1:19 pmSan José Juan Santamaria Intl

22h 18m

2 stops

BOI11:37 amBoise Air Term. Gowen Fld

$625

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

Thu 10/15

6:50 pm-7:15 am

1 stop12h 25m

San José Juan Santamaria Intl

Thu 10/22

8:45 am-11:59 pm

1 stop15h 14m

$520

BoiseSan José

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

BOISJO

Boise Air Term. Gowen Fld

Sun 11/1

7:10 pm-11:25 am

2 stops15h 15m

San José Juan Santamaria Intl

Sun 11/8

7:30 am-6:03 pm

1 stop11h 33m

$520

BoiseSan José

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

BOISJO

Boise Air Term. Gowen Fld

Tue 10/13

2:02 pm-2:00 pm

2 stops23h 58m

San José Juan Santamaria Intl

Tue 10/20

3:01 pm-1:51 pm

2 stops22h 50m

$525

BoiseSan José

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

BOISJO

Boise Air Term. Gowen Fld

Tue 10/13

2:02 pm-2:00 pm

2 stops23h 58m

San José Juan Santamaria Intl

Tue 10/20

1:00 pm-1:51 pm

1 stop24h 51m

$536

BoiseSan José

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

BOISJO

Boise Air Term. Gowen Fld

Sat 10/17

6:00 am-7:40 pm

2 stops13h 40m

San José Juan Santamaria Intl

Sat 10/24

9:00 am-10:40 pm

2 stops13h 40m

$546

BoiseSan José

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

BOISJO

Boise Air Term. Gowen Fld

Sat 2/13

8:18 am-11:15 pm

2 stops13h 57m

San José Juan Santamaria Intl

Sun 2/21

5:35 am-10:55 pm

2 stops18h 20m

$548

BoiseSan José

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

BOISJO

Boise Air Term. Gowen Fld

Sat 2/20

8:18 am-11:15 pm

2 stops13h 57m

San José Juan Santamaria Intl

Sun 2/28

5:35 am-10:55 pm

2 stops18h 20m

$548

Quickest round-trip

BoiseSan José

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

BOISJO

Boise Air Term. Gowen Fld

Thu 10/15

5:40 am-7:40 pm

2 stops14h 00m

San José Juan Santamaria Intl

Thu 10/22

1:30 pm-1:05 am

2 stops11h 35m

$598

BoiseLiberia

BOI Boise Air Term. Gowen Fld - LIR Liberia

BOILIR

Boise Air Term. Gowen Fld

Sat 1/23

6:31 pm-8:31 pm

1 stop25h 00m

Liberia

Thu 1/28

8:33 am-10:50 pm

1 stop15h 17m

$609

BoiseLiberia

BOI Boise Air Term. Gowen Fld - LIR Liberia

BOILIR

Boise Air Term. Gowen Fld

Sat 1/23

6:31 pm-8:31 pm

1 stop25h 00m

Liberia

Thu 1/28

8:33 am-9:42 pm

2 stops14h 09m

$613

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 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

Prices

Airlines

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 $441, 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 January is your next best option. Flight prices from Boise to Costa Rica during January average around $448.

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 $612 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 $391 on momondo.

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

You could potentially save up to 27% 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

Best Price Found	$239
Fastest flight time	11h 53m
Direct flights	None

The best one-way flight to Costa Rica from Boise in the past 72 hours is $239. The best round-trip flight deal from Boise to Costa Rica found on momondo in the last 72 hours is $520.

The fastest flight from Boise to Costa Rica takes 11h 53m

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?
As of September 2026, there are 4 operators available to choose from 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
American Airlines	PriceFrom $279	Free Cancellation	Rating 7.1 12,025 reviews	Search American Airlines flights
United Airlines	PriceFrom $317	Free Cancellation	Rating 7.4 10,160 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $376	Free Cancellation	Rating 7.9 12,868 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $454	Free Cancellation	Rating 8.0 4,196 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.

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.

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Flights to San Joséfrom $284

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Cheap flights from Boise to Costa Rica from $239

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 1/26. 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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American Airlines flights from Boise to Costa Rica

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

Delta flights from Boise to Costa Rica

Our best Delta deals on Boise to Costa Rica flight tickets

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See travel insights to Costa Rica from

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

What is the cheapest month to fly to Costa Rica?

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

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

What is the cheapest airline that flies from Boise Air Term. Gowen Fld to Costa Rica?

What airlines fly to Costa Rica?

Cheap Boise to Costa Rica flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Boise to Costa Rica

Best airlines flying from Boise to Costa Rica

Compare and see reviews for airlines that fly from Boise 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

Boise 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