$266 Find Cheap Flights from Costa Rica to Boise

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Boise departing on 3/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Boise

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Boise, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Boise, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$383
United Airlines
Thu 1/15Sun 1/18
LIR - BOI • 2 stops
Cheapest one-way
$240
United Airlines
Mon 3/2
LIR - BOI • 2 stops
When to travel
July
Cheapest • 34% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Boise!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Costa Rica to Boise

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Costa Rica to Boise that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Costa Rica to Boise

Thu, Jan 15 - Sun, Jan 18
United Airlines Logo
8:35 am - 11:48 pm
LIR
-
BOI
16h 13m2 stops
United Airlines Logo
7:05 pm - 1:10 pm
BOI
-
LIR
17h 05m2 stops
$383United Airlines
Thu, Jan 15 - Sun, Jan 18
United Airlines Logo
2:20 pm - 7:51 pm
LIR
-
BOI
30h 31m2 stops
United Airlines Logo
2:20 pm - 6:37 pm
BOI
-
LIR
27h 17m2 stops
$390United Airlines
Thu, Jan 15 - Sun, Jan 18
United Airlines Logo
2:20 pm - 7:51 pm
LIR
-
BOI
30h 31m2 stops
United Airlines Logo
2:37 pm - 4:08 pm
BOI
-
LIR
24h 31m1 stop
$406United Airlines
Thu, Jan 15 - Sun, Jan 18
United Airlines Logo
2:20 pm - 7:51 pm
LIR
-
BOI
30h 31m2 stops
United Airlines Logo
8:15 am - 12:55 pm
BOI
-
LIR
27h 40m1 stop
$408United Airlines
Mon, Mar 2 - Sat, Mar 14
United Airlines Logo
8:35 am - 10:12 am
LIR
-
BOI
26h 37m2 stops
United Airlines Logo
6:15 am - 5:37 pm
BOI
-
LIR
35h 22m2 stops
$581United Airlines
Thu, Jan 15 - Sun, Jan 18
United Airlines Logo
12:50 pm - 9:52 pm
LIR
-
BOI
10h 02m1 stop
United Airlines Logo
6:10 am - 4:08 pm
BOI
-
LIR
8h 58m1 stop
$663United Airlines
Mon, Mar 2 - Sat, Mar 14
Alaska Airlines Logo
7:08 pm - 12:44 pm
LIR
-
BOI
18h 36m1 stop
Alaska Airlines Logo
6:00 pm - 6:36 am
BOI
-
LIR
12h 36m2 stops
$710Alaska Airlines
Mon, Mar 2 - Sat, Mar 14
Multiple Airlines Logo
7:08 pm - 12:44 pm
LIR
-
BOI
18h 36m1 stop
Multiple Airlines Logo
8:12 pm - 6:36 am
BOI
-
LIR
10h 24m1 stop
$966Multiple Airlines
Booking Insights

KAYAK's insights & trends for flights to Boise

Get data-powered insights and trends for flights to Boise to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly to Boise?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Boise, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to Boise is July, where tickets cost $307 on average for one-way flights. On the other hand, the most expensive months are November and February, where the average cost of tickets from Costa Rica is $711 and $633 respectively. For return trips, the best month to travel is July with an average price of $307.

Good to know

Low seasonFebruary
Cheapest flight$240
Best time to beat the crowds but there is an average 35% increase in price.
Most popular time to fly with an average 19% increase in price.
Flight from Liberia to Boise

FAQs - booking Boise flights

  • How far is Boise Air Term. Gowen Fld Airport from central Boise?

    You’ll need to travel 3 miles to reach the Boise city center from Boise Air Term. Gowen Fld Airport.

  • What is the name of Boise’s airport?

    All flights to Boise land at Boise Air Term. Gowen Fld Airport. The airport code is BOI,and it can also be referred to as Air Term Gowen Fld, Air Term. Gowen Fld, or Boise.

  • What is the cheapest day to fly to Boise?

    Based on KAYAK data, the cheapest day to fly to Boise is Tuesday where tickets can be as cheap as $465. On the other hand, the most expensive day to fly is Friday, where prices are $706 on average.

  • How does KAYAK find such low prices on flights to Boise?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Boise.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Boise?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boise is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Boise?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Boise with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Boise?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Boise up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Boise?

    The cheapest time of day to fly to Boise is generally in the afternoon, when flights cost $434 on average. The most expensive time of day to fly to Boise is generally at night, which is peak travel time and where the average cost of a ticket is $668.

  • How many direct flights to Boise are there each week?

    Each week there are around 801 direct flights from within Costa Rica to Boise. The most common day for departures is Saturday, with 15% of flights taking off on this day.

Top tips for finding cheap flights to Boise

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Boise flight deals.

Reviews of the top airline flying from Costa Rica to Boise

 
See real verified KAYAK customer reviews for airlines flying to Boise. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Costa Rica to Boise. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Boise? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9066 reviews
7.1Entertainment
8.1Crew
7.3Comfort
7.7Boarding
6.6Food
Airline reviews

Flight was delayed 8 times. We were sitting at the airport for 14 hours. We got 2 hours of sleep (if that) on what was not meant to be a red-eye.

4.0 OkayJessica, Dec 2025
EWR - LAS
Read more United Airlines reviews

Flight was delayed 8 times. We were sitting at the airport for 14 hours. We got 2 hours of sleep (if that) on what was not meant to be a red-eye.

It was probably one of the worst flights I’ve been on. The restrooms were never cleaned or stocked. The food was very subpar, and i usually enjoy airline food, so I was disappointed. It was just all around a bad experience. The only saving grace was the flight attendants.

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

Very bad! They kept delaying my flight and wouldn’t do anything about it

They brought an empty plane to the gate. Then a flight delay was announced for maintenance and waiting on a part. I was then put on a flight to San Francisco instead with a connecting flight to my final destination. Arrived at my final destination 2 hours late.

The only downside was my cell phone charger wouldn’t work in the charging port but everyone else’s would work in them all. My cell phone cable works fine in my hotel room in Frankfurt.

Flight team stood out for perzonal attention, kindness at bright cheery attitudes at 8am. Very helpful.

Ot was overall fine. Left on time and had basic snacks. Weather was finicky but that’s not the airlines fault.

Quick and seamless boarding. No entertainment but fast Starlink wifi for this short trip and the staff was really friendly.

We boarded late. The crew at the airport was dismissive. The seat cushion on the plane was uncomfortable.

Traveling to a place near Boise?

Book flights to Boise if you plan to visit one of these locations
McCall
Ontario

Everything you need to know for your flight to Boise

Information on the airport you'll fly into in Boise