$409 Find Cheap Flights from Idaho Falls to Costa Rica - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Idaho Falls to Costa Rica departing on 9/20. 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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1 adult, Economy, 0 bags

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Book Cheap Idaho Falls 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 Idaho Falls 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 Idaho Falls to Costa Rica

Sun, Nov 15 - Wed, Nov 18
United Airlines Logo
5:40 pm - 11:25 am
IDA
-
SJO
16h 45m
2 stops
United Airlines Logo
8:45 am - 9:53 am
SJO
-
IDA
26h 08m
2 stops
$519United Airlines
Fri, Nov 6 - Sat, Nov 14
United Airlines Logo
5:40 pm - 11:25 am
IDA
-
SJO
16h 45m
2 stops
United Airlines Logo
7:30 am - 3:23 pm
SJO
-
IDA
8h 53m
1 stop
$579United Airlines
Fri, Nov 6 - Sat, Nov 14
United Airlines Logo
5:40 pm - 11:25 am
IDA
-
SJO
16h 45m
2 stops
United Airlines Logo
8:45 am - 9:53 am
SJO
-
IDA
26h 08m
2 stops
$605United Airlines
Sat, Aug 15 - Sun, Aug 23
American Airlines Logo
2:20 pm - 12:26 pm
IDA
-
SJO
22h 06m
2 stops
American Airlines Logo
6:00 am - 11:30 am
SJO
-
IDA
29h 30m
2 stops
$754American Airlines
Sat, Aug 22 - Sun, Aug 30
American Airlines Logo
2:20 pm - 12:26 pm
IDA
-
SJO
22h 06m
2 stops
American Airlines Logo
6:00 am - 11:30 am
SJO
-
IDA
29h 30m
2 stops
$757American Airlines
Sun, Aug 23 - Fri, Aug 28
American Airlines Logo
2:20 pm - 1:52 pm
IDA
-
SJO
23h 32m
1 stop
American Airlines Logo
2:56 pm - 11:30 am
SJO
-
IDA
20h 34m
2 stops
$758American Airlines
Sun, Sep 20 - Mon, Jan 11
United Airlines Logo
4:04 pm - 12:21 pm
IDA
-
SJO
20h 17m
2 stops
United Airlines Logo
8:45 am - 9:28 am
SJO
-
IDA
25h 43m
2 stops
$769United Airlines
Sat, Aug 15 - Sun, Aug 23
American Airlines Logo
7:00 am - 1:52 pm
IDA
-
SJO
30h 52m
1 stop
American Airlines Logo
6:00 am - 11:30 am
SJO
-
IDA
29h 30m
2 stops
$770American Airlines
Sat, Aug 22 - Sun, Aug 30
American Airlines Logo
2:20 pm - 1:52 pm
IDA
-
SJO
23h 32m
1 stop
American Airlines Logo
6:00 am - 11:30 am
SJO
-
IDA
29h 30m
2 stops
$771American Airlines
Fri, Nov 6 - Sat, Nov 14
Multiple Airlines Logo
3:54 pm - 11:15 pm
IDA
-
SJO
30h 21m
3 stops
Multiple Airlines Logo
5:45 am - 1:16 pm
SJO
-
IDA
32h 31m
3 stops
$811Multiple Airlines
Booking Insights

KAYAK's insights & trends for Idaho Falls to Costa Rica flights

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

How long does a flight from Idaho Falls to Costa Rica take?

The duration of a flight to Costa Rica depends on your arrival airport. The shortest route to Costa Rica from Idaho Falls is to San José, which takes 15h 39m.

Good to know

Cheapest flight$409
Flight from Idaho Falls to San José

FAQs - booking Costa Rica flights

  • How does KAYAK find such low prices on flights from Idaho Falls 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 Idaho Falls to Costa Rica.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Idaho Falls 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 Idaho Falls 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 Idaho Falls 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 Idaho Falls 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 Idaho Falls 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 airlines flying from Idaho Falls to Costa Rica

 
Need help choosing which airline to fly with from Idaho Falls 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.
7.4
United AirlinesOverall score based on 9948 reviews
8.1Crew
7.1Entertainment
7.7Boarding
6.7Food
7.3Comfort
Airline reviews

Boarded from a very small gate at LAX. Staff at gate had us line up, then waited 25 minutes to board without a word of explanation. Plane arrived on time then waited 20 minutes for a plane to vacate our gate. Majority of bags arrived after 15 minutes but it took an hour for a small number of remaining bags to be off-loaded despite my “priority” bag tag.

2.0 MediocreMichael, Jul 2026
LAX - IAH
Read more United Airlines reviews

Boarded from a very small gate at LAX. Staff at gate had us line up, then waited 25 minutes to board without a word of explanation. Plane arrived on time then waited 20 minutes for a plane to vacate our gate. Majority of bags arrived after 15 minutes but it took an hour for a small number of remaining bags to be off-loaded despite my “priority” bag tag.

It's fine but Newark to Nashville was too long

The flight was delayed because they closed several flight ways because of air shows, fire works, etc.

Horrible experience. They delayed our flight 7 hours!! We had to seat at the airport with kids on 4th July all day!

Read the fine print. This was my flight home. I booked my flight for the quickest way home. Had a carry-on and a personal item. Same as my outbound flight. Apparently I needed to pre-pay extra for my carry-on. When I checked in, I was told that I had to check it. I said I’ll pay for it, and was told that this wasn’t an option anymore. They said I still had to pay $50 to check my carry-on. I told them I’ll pay whatever to just carry it in as intended. I was not allowed, so eventually I paid $50 to check my carry-on under a plane that was half full, with overhead compartments that were even less full. My white carry-on suitcase was practically destroyed getting from Idaho falls to Denver to Orange County. The low price air fair was a bait and switch. Got me to the gate, made me pay extra, then didn’t even allow me to pay for a carry on. Not to mention that I paid the $8 for WiFi that didn’t work. All to get my suitcase destroyed. I don’t think I’m going to even keep my Untied mileage plus membership and card. Apparently, membership does not have its privileges for this one.

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

During landing. 2 crew members passed 3 times by my lane and didn't notice that people in front of us had their site to the furthermore reclined... That was uncomfortable and could have been dangerous.

My experience on this United Airlines flight was highly uncomfortable, primarily due to two issues: Cabin Temperature: The temperature on the Boeing 737 MAX 8 was unacceptably high, feeling consistently around 80 degrees throughout the flight. This made sleeping impossible and significantly detracted from the experience. Seating Arrangement: Being stuck in a middle seat for a six-and-a-half-hour overnight flight compounded the discomfort. Moving forward, I will always purchase a seat assignment to avoid this situation.

United Airlines was fantastic, however, UnderPricer was a nightmare. I got to the airport 4 hours before my flight. We are moving to New Zealand so had quite a bit of baggage (16 checked items) and so wanted to have plenty of time to get everything taken care of properly. When I went to check in they (United) could only find a ticket for me. The 5 tickets for my children were never officially ticketed. I called Underpricer and they told me it was United's fault and United told me that Underpricer just needs to reissue the tickets, but they refused to. I asked the Underpricer agent to transfer me to his supervisor as I was not getting the help I needed. He told me the supervisor was busy but that he would call me back in 30 minutes. 30 minutes came and went with no phone call. After an hour I called Underpricer back but they would not let me talk to the person I had talked to before, just told me that he was talking with the supervisor and technical support. I called again an hour later, was told the same thing. I tried again later, with only about 30 minutes until my flight was scheduled to leave (meaning I had been at the airport for more than 3 hours with my 5 children trying to get ticketed and board the flight). Also, my husband had moved to New Zealand 3 months prior, I haven't seen him in 3 months, my children hadn't seen their dad in 3 months, we were all extremely eager to get on that flight and get to New Zealand. The situation with the tickets did not get resolved until after it was too late to check our luggage and board our flight. We were devastated. My 11 year old son was in tears at not being able to be on his way to see his dad. Thankfully we were rebooked for the next evening, but that night it felt devastating. We'd been at the airport for 4 hours waiting. My in-laws waited with me and then helped me reload all our baggage and took us home to stay with them for the night. On the newly booked flights we could not sit together - my children were spread throughout the plane. So, even though I had paid extra to select our seats after buying my seats from Underpricer only two of us were able to sit together (thankful that my 11 year old wasn't all by himself, but not happy that my 14 & 16 year old daughters were seated by strangers). I really feel that Underpricer should refund me what I paid for the seating ($120 USD). It was a very frustrating situation and I plan on never using Kayak or Underpricer ever again.

I had very little time to change planes originally in Denver after my flight from Omaha. I had an hour and a half layover in Denver originally and my flight leaving Omaha was delayed an hour because they had to change a tire, which I can understand. When I reached Denver my other flight was late, fortunately, but I still had only 10 minutes to run about a mile through the airport to get to my flight. Again, fortunately, I am a healthy 71-year-old and was able to accomplish this feat. However, the stress was more than necessary to bear.

Flight canceled because they didn’t have enough flight attendants. No refunds or credits for future flights

The flight from Milwaukee to Dallas was great the staff absolutely amazing. After that EVERYTHING WENT DOWN HILL!!! ABSOLUTELY HORRIBLE!!! WILL NOT FLY THIS AIRLINE AGAIN

Nothing, I wont be flying American Airlines again and will not be recommending anyone to fly American Airlines. It was the worst experience flying I've ever had.

Boarding was awful - no order, people cutting in line, completely chaotic Planes are very old and uncomfortable. Noticeable difference between Delta and United on same route.

Getting to Scotland with no luggage (no medicine, no clothes and no club) on golf trip very disappointed

My luggage never made it, I booked business class only to find out I’m sitting in the back. Very disappointed with the reservation

American Airlines changed are gate no fewer than four times. Walking back and forth from one concourse to another was exhausting, especially after all the flight delays.

Finnair is a really good airline! We specifically looked for them on this trip. On time, great crew, and overall great experience.

Flight was delayed due to a steering issue with plane. The delay caused me to miss the connecting flight. The delay caused me to spend an extra 21 hours in airports and flights to get to my destination. The plane issue obviously should have been found and fixed before we even boarded. Ridiculous.

A much better flight than our previous. The flight attendant took care of us and regularly checked in to see if we needed anything. Brought us drinks prior to the departure and then a couple more times. Totally makes the difference in how you travel when the crew is checking on their passengers. Great job on this leg of our trip.

Everything you need to know for your flight from Idaho Falls to Costa Rica

Information on your arrival and departure airports