$199 Find Cheap Flights from Boise to Costa Rica

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boise to Costa Rica departing on 5/30. 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.
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Best Costa Rica Flight Deals from Boise

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
San José
San José1 stop$396
Liberia
Liberia2 stops$483
San José
San José1 stop$396
Liberia
Liberia2 stops$483

Cheap Flights from Boise to Costa Rica (BOI-CR0)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boise to Costa Rica 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 Boise to Costa Rica

Thu, Oct 23 - Sun, Oct 26
United Airlines Logo
2:45 pm - 7:15 amBOI-SJO
16h 30m1 stop
United Airlines Logo
8:30 am - 7:41 pmSJO-BOI
11h 11m1 stop
$396United Airlines
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Tue, Jul 8 - Tue, Jul 15
United Airlines Logo
7:15 pm - 7:15 amBOI-SJO
12h 00m1 stop
United Airlines Logo
5:30 am - 11:31 pmSJO-BOI
18h 01m2 stops
$410United Airlines
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Wed, Oct 8 - Wed, Oct 29
American Airlines Logo
1:41 pm - 9:25 amBOI-SJO
19h 44m2 stops
American Airlines Logo
2:25 pm - 12:44 pmSJO-BOI
22h 19m2 stops
$426American Airlines
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Wed, May 28 - Tue, Jun 3
Alaska Airlines Logo
8:59 pm - 11:46 pmBOI-SJO
26h 47m2 stops
Alaska Airlines Logo
1:06 am - 8:50 pmSJO-BOI
19h 44m2 stops
$437Alaska Airlines
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Wed, May 28 - Tue, Jun 3
Alaska Airlines Logo
8:59 pm - 11:46 pmBOI-SJO
26h 47m2 stops
Alaska Airlines Logo
1:06 am - 2:44 pmSJO-BOI
13h 38m1 stop
$456Alaska Airlines
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Tue, May 27 - Tue, Sep 9
American Airlines Logo
5:10 pm - 1:26 pmBOI-LIR
20h 16m2 stops
American Airlines Logo
12:55 pm - 12:44 pmLIR-BOI
23h 49m2 stops
$483American Airlines
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Fri, Jun 6 - Sun, Jun 15
 Logo
12:16 pm - 11:33 amBOI-SJO
23h 17m2 stops
 Logo
12:50 am - 3:04 pmSJO-BOI
38h 14m2 stops
Fri, Jun 6 - Sun, Jun 15
 Logo
12:16 pm - 11:33 amBOI-SJO
23h 17m2 stops
 Logo
12:50 am - 2:30 pmSJO-BOI
13h 40m1 stop
Wed, Nov 5 - Tue, Nov 11
Copa Airlines Logo
2:11 pm - 8:01 amBOI-SJO
16h 50m2 stops
Copa Airlines Logo
4:13 am - 11:05 pmSJO-BOI
19h 52m2 stops
$606Copa Airlines
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Fri, Oct 17 - Thu, Nov 13
Copa Airlines Logo
7:09 pm - 4:22 pmBOI-SJO
21h 13m2 stops
Copa Airlines Logo
4:13 am - 11:05 pmSJO-BOI
19h 52m2 stops
$799Copa Airlines
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KAYAK's insights & trends for Boise to Costa Rica flights

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

What is the cheapest month to fly from Boise to Costa Rica?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boise to Costa Rica, 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 from Boise to Costa Rica is September, when tickets cost $410 (return) on average. On the other hand, the most expensive months are March and December, when the average cost of round-trip tickets is $804 and $797 respectively.

What’s the cheapest day of the week to fly from Boise to Costa Rica?

The average price of all round-trip flights from Boise to Costa Rica clicked on KAYAK for each day over the last 12 months.

When flying from Boise to Costa Rica, you should consider leaving on a Sunday and avoid Fridays if you are looking for the best rates. For your return to Boise, you’ll find the best rates on Tuesdays and the most expensive ones on Fridays.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boise to Costa Rica, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Boise to Costa Rica, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.


Good to know

Low seasonAugust
High seasonDecember
Cheapest flight$199
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly with an average 16% increase in price.
Flight from Boise to San José

FAQs - booking Costa Rica flights

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

    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 from Boise to Costa Rica.

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

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

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

    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 from Boise to Costa Rica 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 from Boise to Costa Rica?

    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 from Boise to Costa Rica 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 Costa Rica?

    The cheapest time of day to fly to Costa Rica is generally at night, when round-trip flights cost $581 on average. Morning departures are around 21% more expensive than evening flights, on average. The most expensive time of day to fly to Costa Rica is generally in the morning, which is peak travel time and where the average cost of a ticket is $723.

Top 5 airlines serving from Boise to Costa Rica

Need help choosing which airline to fly with from Boise to Costa Rica? 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.
8.0
Alaska AirlinesOverall score based on 10000 reviews
7.9Comfort
8.2Boarding
8.5Crew
7.1Entertainment
7.1Food
Airline reviews

Our big luggage never made it to Boston. Very crucial to get it ASAP as heart medication is in there.

6.0 GoodLarry, May 2025KOA - HNL
Read more Alaska Airlines reviews

Our big luggage never made it to Boston. Very crucial to get it ASAP as heart medication is in there.

A cheerful and effective crew. Tasty pre-order food options.

Boarding the flight crew was super nice. They came with drinks 2 times during the 4 hour flight from San Antonio to Seattle and they gave a snack. If you wanted WIFI it was $8 and they had movies, some to purchase and some free. The way the plane was packed you would think it would be free or cheaper. Our pilot got us there before our actual arrival time l, we arrived at 9 not 930.

Had to go in the bus to board the flight. Was traveling with just a carry on, but Carry on luggage was recommended to be checked in and it took a while to come to the baggage claim.

No problems at all. Thanks for the safe trip. Henry

Flight was on time, inflight service was professional and attendants were so pleasant.

Despite boarding starting quite late, we actually got to LAX on time. Boarding was easy and orderly. We knew that no screen with entertainment choices would be included on this flight, and that's fine. It was the best price, and we brought all the types of entertainment we needed with us, and appreciated the USB charging ports. What stood out most, was the complimentary liquor. THAT made the biggest difference in our enjoyment of this flight.

Very Large person sitting next to me and taking up a lot of space including mine

The staff and crew were excellent. The entire flight process was so friendly and smooth.

Wish I got An email stating that I needed to check in at hawaiian even if I made my ticket thru alaska. I had to walk to terminal A from Terminal B.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

Staff was far less than helpful at all times. Departure and arrival times mean nothing to Southwest. Extremely disappointed, will never fly with them again, and I’ll be sure to share my experience with all.

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

Plz don't take away free bags and free seating

The seats were a bit cramped and worn, but otherwise okay.

I would have liked to arrive on time - not 5 hours late!

After a 3 hour layover in Denver my flight was delayed over 5 hours! No explanation; no assistance; no offer to provide compensation; no one at Southwest was willing to offer any assistance. 8 hours in the Denver airport - ridiculous!

Good flights. On time. They had a gluten free snack option which was nice

Take this flight once or twice a month. Just don’t cut it from the schedule.

737-800 in first class was pretty dumpy. Seat had an uncomfortable angle, storage under the seat was blocked so even my very modest backpack didn't fit, power outlet was flaky. Weird tiny seat pockets that couldn't hold a gallon ziploc bag, emesis bag missing, etc. etc. No in-flight service due to turbulence. Crew was excellent, boarding was smooth despite a full flight.

Food from the flight from Atlanta to Santiago was very poor..

Flight was delayed due to weather. Crew did a nice job of making us comfortable. No complain complaints.

Our bag was lost so that made unnecessary chaos On our trip

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

The schedule to Moline changed 5 times. The gate changed 6 times. That is a pathetic way to run an airline. No wonder that no one in our company flies on United Express to or from Moline. Changes happen most of the time. I learned my lesson on this trip…never again!

The personnel were professional and friendly. The Boeing 737 Max 9 is too claustrophobic and was very warm at both airport gates, and still warm in the air.

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

Flight was great. Efficient boarding. Short flight. Early arrival. Friendly flight crew. The entertainment system did not work well. Could not access it until the aircraft reached 10K feet or more. Lots of glitches.

get E+, a must for 5 hours flight if you are tall

The first flight was better in terms of the aircraft.

we were delayed going into and out of Newark Airport by 3-4 hours each way. Excuses/reasons given were misleading. Weather was cited at first when there was NO weather issue. Turns out Newark had a shortage of staff and runway construction. United knew this and should have NOT scheduled flights when they know we would be delayed so long. I will avoid United and EWR airport at all cost going forward. Delta never looked so good.

The seat and leg room was not good. The food and beverage service was good.

Liked fold flat bed. Didn’t like having no window. Didn’t like poor choice of food and being served dinner very late, hours after take off of a 7:40pm flight. Servers not friendly. Food horrible in business class.

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

DFW-LHR Toilets not kept clean Too cramped. Aisles so narrow crew were constantly banging into people on the aisle seats. Even then, the carts used are reduced width. Other than that it was a decent flight on both legs

Eventless. It was a good flight and good crew. Can’t complaint.

At the beginning of the flight there was some turbulence and the announcement was made that there would be no beverage service. The turbulence only last about 5 minutes then it was smooth sailing. I noticed that first class got their service, but the rest of us did not.

Update departure times in a more timely manner. We are not boarding on time if the plane isn’t arriving until after our scheduled departure time.

Update.us on flight information in a more timely manner. Don’t say we are boarding on time ten minutes before the boarding time when the aircraft isn’t arriving for another forty minutes.

The boarding was pretty easy. However, the first class seats are not lay flat as other airlines (like JetBlue) has and therefore sleeping was a challenge.

It was nobody’s fault - but the plane came 4-hrs late and we were updated randomly in 20-30 mins increments which left us hostage to sit and wait expectantly. It was very long and got very late. Our plane didn’t land until nearly 1 am! Also the toilet wasn’t working. The hosts were nice enough but were clearly “about to pass out” as one told me. Lastly, there was no snack or even time for it. Just a bad experience overall.

Was a normal flight but it was delayed, and there wasn't an explanation.

In flight connectivity (via T-Mobile) was often not working.

Pitch was very small. Knees were on the seat back in front of me.

Everything you need to know for your flight from Boise to Costa Rica

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