$182 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 8/11. 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

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Cheap Flights from Boise to Costa Rica

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
San José
San José2 stops$394
Liberia
Liberia1 stop$555
San José
San José2 stops$394
Liberia
Liberia1 stop$555

Book Cheap Boise to Costa Rica Plane Tickets

 
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

Sat, Sep 12 - Sat, Sep 19
Multiple Airlines Logo
7:05 am - 11:15 pm
BOI
-
SJO
16h 10m
2 stops
Multiple Airlines Logo
5:45 am - 11:00 pm
SJO
-
BOI
17h 15m
2 stops
$394Multiple Airlines
Sat, Sep 12 - Sat, Sep 19
United Airlines Logo
7:01 pm - 7:15 am
BOI
-
SJO
12h 14m
1 stop
United Airlines Logo
8:45 am - 11:50 pm
SJO
-
BOI
15h 05m
1 stop
$420United Airlines
Tue, Jul 28 - Thu, Aug 6
American Airlines Logo
3:53 pm - 11:50 am
BOI
-
SJO
19h 57m
2 stops
American Airlines Logo
1:29 pm - 11:27 am
SJO
-
BOI
21h 58m
2 stops
$425American Airlines
Tue, Aug 4 - Sat, Aug 15
Multiple Airlines Logo
8:03 am - 11:15 pm
BOI
-
SJO
15h 12m
2 stops
Multiple Airlines Logo
5:45 am - 10:45 pm
SJO
-
BOI
17h 00m
2 stops
$426Multiple Airlines
Wed, Aug 12 - Thu, Aug 20
Multiple Airlines Logo
8:03 am - 11:40 pm
BOI
-
SJO
15h 37m
2 stops
Multiple Airlines Logo
5:45 am - 11:00 pm
SJO
-
BOI
17h 15m
2 stops
$433Multiple Airlines
Wed, Aug 12 - Thu, Aug 20
American Airlines Logo
5:20 pm - 1:52 pm
BOI
-
SJO
20h 32m
2 stops
American Airlines Logo
1:29 pm - 11:27 am
SJO
-
BOI
21h 58m
2 stops
$435American Airlines
Wed, May 27 - Sun, May 31
Alaska Airlines Logo
6:54 pm - 11:33 pm
BOI
-
SJO
28h 39m
2 stops
Alaska Airlines Logo
12:53 am - 5:43 pm
SJO
-
BOI
40h 50m
2 stops
$438Alaska Airlines
Sat, May 30 - Fri, Jun 5
Alaska Airlines Logo
8:51 pm - 11:33 pm
BOI
-
SJO
26h 42m
2 stops
Alaska Airlines Logo
12:53 am - 11:03 am
SJO
-
BOI
34h 10m
2 stops
$439Alaska Airlines
Wed, May 27 - Mon, Jun 1
Multiple Airlines Logo
7:33 pm - 11:45 am
BOI
-
SJO
16h 12m
3 stops
Multiple Airlines Logo
5:05 am - 10:58 pm
SJO
-
BOI
17h 53m
2 stops
$442Multiple Airlines
Tue, Jul 28 - Tue, Aug 11
Multiple Airlines Logo
8:03 am - 11:15 pm
BOI
-
SJO
15h 12m
2 stops
Multiple Airlines Logo
5:45 am - 10:45 pm
SJO
-
BOI
17h 00m
2 stops
$444Multiple Airlines
Booking Insights

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 October, when tickets cost $141 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $440 and $404 respectively.

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
Cheapest flight$182
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly and prices are also 28% lower on average.
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.

Reviews of the 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
SouthwestOverall score based on 4291 reviews
7.0Food
7.5Entertainment
8.0Comfort
8.6Crew
8.1Boarding
Airline reviews

The checking experience in Orlando was terrible, almost missed the flight. Too many travelers and Southwest completely understaffed.

2.0 MediocreAnonymous, May 2026
MCO - MDW
Read more Southwest reviews

The checking experience in Orlando was terrible, almost missed the flight. Too many travelers and Southwest completely understaffed.

I'm glad it wasn't only 75% full because I could get a good seat

if I was good. Not happy that I have to pay extra money to get the seat I need for lake room, but I guess that’s a sign of the times.

Seats were very comfortable. They tilted back. Drinks and snacks were free and served 3 times. Attendants were awesome.

Plane was clean and comfortable. Flight attendants and gate staff were professional, friendly and efficient. Boarding and deplaning were orderly and efficient. All in all, the typical excellent Southwest experience.

Truly terrible. Will never willingly fly southwest again. Seats are worse than before they switched to assigned seating. One flight attendant was the opposite of helpful (rude, unhelpful, dismissive, and as my stranger seatmate said unprompted: a total prick). This caused me, 15 minutes into the flight, to book an alternate return flight home on a competing airline (first class 1.2k purchase instead of my existing planned flight) just so I would not have to ever be on that aircraft, with that terrible service person, with those horrific seats ever again.

Not having a five hour delay with little notice! The crew was very kind, though, and just as tired as we passengers were. The flight didn't depart until nearly 1 am...and no reason was ever given.

The entire experience from boarding to landing was amazing! The crew were very friendly. Will definitely be back.

no service at all due to turbulence. they should've at least given us snacks, there were only 10 people on the entire flight.

First time I've had to use the disabled accommodations. And I could not have had a better experience with Southwest, i was having trouble getting from one terminal to another due to my heart failure. And the next thing I know a Southwest agent had made sure. I had a wheelchair at all my flights. Can't thank them enough.

The boarding pass had no gate published and there are many fewer large boards with arrivals and departures I almost missed my flight trying to find the gate

Crew was so kind, flight was easy, thank you so much for everything

Everyone was so kind, flight was wonderful, check in and baggage were easy. Thank you guys so much for a great trip

Flight delayed no communication. The gate was changed so many times.

For such a long flight, Tampa to Seattle, was shocked to learn that no food was served. Also, there were no TV monitors to be able to watch a movie.

It departed an hour and a half late because the crew got in late the previous night due to weather related problems. So we got into LA later than anticipated and traffic was much worse.

The staff at the check-in counter was responsive to the long queue and intervened to redirect the traffic: foreigners can't complete check-in without human agents; that is the real line which moves quickly enough. On-boarding and off-boarding were smooth and civilized. Overall the operations were efficient and the experience was pleasant.

Good. I didn’t order food and there was no entertainment available.

Ok, but nothing special. Long flight with no blanket/pillow set.

Flight was delayed by 3 hrs. Forcing missed connection and overnight stay. Terrible.

Enjoyed it very much. Especially liked the free WiFi that Delta offers.

Smooth flight. Left on time, and got in 15 minutes early. Onboard video was great

For some reason, TSA Atlanta didn’t have my bag on the flight on time and they don’t have to provide Delta a reason for that.

WiFi didn’t work on two of four planes. Flight attendants were not overly friendly or welcoming. Planes were extremely slow to board and deplane.

Delta does a great job with entertainment and free wifi. I can still be in touch with my colleagues while in the air.

Aside from a completely packed plane, I really have no complaints.

Bus to plane was delayed for no apparent reason and our luggage was still on the belt when they shut it off. Took about 20 minutes to turn it back on to get our luggage.

It was a pleasant surprise to have complimentary Wi-Fi on the flight

Much better than Latam, the worse airline company ever. I hope I don't have the need to fly Latam ever in my life again.

Seats in Delta Main are unbelievably close to the seat in front of. Hard to get a backpack under the seat.

Late plane. Only one crew on the ground so we b had to wait for Denver flight to come in, board, and depart. At 78 yrs of age I was not pleased trying to get my connection. What really made me angry was the notification you sent me to hurry up or I would miss my connection. Why tell me to hurry up when you got me in late. It was not a good way of treating customers.

No complaints other than luggage carousel was incorrectly guiding passengers to the wrong carousel on the screen.

Did not like that we couldn't complete check in on-line without providing pictures of our passports. Worry about identity theft. We had no delays and boarding was handled In an efficient manner.

We were a little disappointed to not be able to complete check in online without uploading pics of passports. Also we have KTN's and they weren't on our boarding passes when we got to security. Had to trek back to counter to have them fix.

Excellent service in Polaris class IAD to ZRH. Arrived rested and well fed after the overnight flight.

My flight time was changed without any notification to me which ruined my time sensitive plans so I ended up completely changing my travel plans and no reimbursement.

Excellent! I got to Munich and was transferred to my Lufthansa flight quickly, in 15 to 20 minutes, so I did not miss my flight. However, I had checked my overhead bag at the boarding gate in Tampa. That got to Tunis the next day. That is to be expected.

It's a short hop. My carryon was checked at the gate, I didn't have to drag it all over the airport. Excellent wheelchair assist.

WiFi didn’t exist , seats were super cramped, lights stayed on near my seat for a long time while others were dimmed, the food/trash/drink cart hit my shoulder at least a couple of times while moving, food options were down to just one option by the time it got to my row, the utensils were garbage (knife bent at a couple of places by the time I was done eating) the spoon was very flimsy plastic

Friendliest Flight Attendant I’ve seen since I flew on Southwest Airlines. The whole trip was outstanding…and arrived Early!

Fine. Nothing to write home about. The plane left on time, and arrived on time.

I was downgraded from first class to coach due to an airplane change. They pulled me out of line and I was the very last person to board the plane stuck in the middle seat with no overhead place to put my carry-.on. Very poor customer service.

Seat comfort was poor (no lumbar or lower back support).

The airplane seats were spacious and comfortable, and the flight attendants were friendly and attentive. The food was delicious like never before. The blankets and toiletries were thoughtfully provided. The captain's navigation was steady and reliable. In short, having flown with Starlux, I won't consider any other airline next time.

STOP MAKING THE SEATING SO CRAMPED. WE NEED A PASSENGER BILL OF RIGHTS!

The passenger in front of of me reclined their seat back all the way the entire flight. Their headrest was in my face the entire flight! I barely had room for the little plastic cup of water to fit on my tray table; can you make the seats and space between the rows any smaller??? You can’t even get up to use the restroom! Worst flight I’ve had in a very long time!

We had several flights and they were all on-time and flawless

My Frequent Flyer nber wasn't put on as I was told it was..... This resulted in a last group boarding and no priority tags on My bags.

Premium Economy Good crew, good service, excellent food. Seat back screen just not bright enough.

Terrible steward... Plane was quite empty... I asked to move "back" in the plane and the steward said no... Unnecessary power trip of mediocre people.

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

Information on your arrival and departure airports