€355 Find Cheap Flights 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 Ireland to Costa Rica departing on 29/8. 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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Best Costa Rica Flight Deals

Cheapest return prices found by our users on KAYAK in the last 72 hours
San José
San José1 stop€643
Liberia
Liberia2 stops€744
San José
San José1 stop€643
Liberia
Liberia2 stops€744

Book Cheap Costa Rica Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights 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 return flight deals to Costa Rica

Sat, 31 Oct - Wed, 4 Nov
British Airways Logo
20:40 - 16:40
DUB
-
SJO
26h 00m
1 stop
British Airways Logo
18:55 - 19:45
SJO
-
DUB
18h 50m
1 stop
€643British Airways
Sat, 31 Oct - Wed, 4 Nov
British Airways Logo
16:05 - 16:40
DUB
-
SJO
30h 35m
1 stop
British Airways Logo
18:55 - 07:55
SJO
-
DUB
31h 00m
1 stop
€654British Airways
Sat, 31 Oct - Wed, 4 Nov
British Airways Logo
16:05 - 16:40
DUB
-
SJO
30h 35m
1 stop
British Airways Logo
18:55 - 07:55
SJO
-
DUB
31h 00m
1 stop
€655British Airways
Sat, 31 Oct - Wed, 4 Nov
British Airways Logo
16:05 - 16:40
DUB
-
SJO
30h 35m
1 stop
British Airways Logo
18:55 - 07:55
SJO
-
DUB
31h 00m
1 stop
€656British Airways
Tue, 24 Nov - Wed, 9 Dec
British Airways Logo
18:30 - 20:55
DUB
-
SJO
32h 25m
2 stops
British Airways Logo
18:55 - 07:55
SJO
-
DUB
31h 00m
1 stop
€682British Airways
Thu, 22 Oct - Fri, 6 Nov
Multiple Airlines Logo
07:30 - 20:05
SNN
-
SJO
19h 35m
2 stops
Multiple Airlines Logo
15:11 - 15:45
SJO
-
SNN
18h 34m
2 stops
€731Multiple Airlines
Tue, 18 Aug - Sat, 5 Sep
Delta Logo
13:05 - 11:49
SNN
-
SJO
29h 44m
2 stops
Delta Logo
13:14 - 11:10
SJO
-
SNN
38h 56m
2 stops
€738Delta
Thu, 26 Nov - Mon, 7 Dec
Multiple Airlines Logo
09:00 - 14:10
DUB
-
LIR
35h 10m
1 stop
Multiple Airlines Logo
15:10 - 07:30
LIR
-
DUB
34h 20m
2 stops
€749Multiple Airlines
Thu, 26 Nov - Mon, 7 Dec
American Airlines Logo
11:30 - 12:16
DUB
-
LIR
30h 46m
2 stops
American Airlines Logo
15:28 - 08:30
LIR
-
DUB
35h 02m
2 stops
€763American Airlines
Fri, 14 Aug - Fri, 21 Aug
American Airlines Logo
12:40 - 13:38
DUB
-
LIR
31h 58m
1 stop
American Airlines Logo
14:15 - 09:45
LIR
-
DUB
36h 30m
1 stop
€768American Airlines
Booking Insights

KAYAK's insights & trends for flights to Costa Rica

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

How far in advance should I book a flight from Ireland 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 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 a flight from Ireland to Costa Rica, you should book around 2 weeks before departure, which saves you about 17% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight€355
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly (7% more expensive on average)
Flight from Dublin to San José

FAQs - booking Costa Rica flights

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

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

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

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

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Ireland 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 Ireland 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 Ireland to Costa Rica up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Costa Rica

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

Reviews of the top 4 airlines flying to Costa Rica

 
Need help choosing which airline to fly with from Ireland 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.
7.8
KLMOverall score based on 1532 reviews
7.2Entertainment
8.4Crew
7.7Comfort
7.3Food
7.8Boarding
Airline reviews

There were no charge points for phones on the economy seats. The seats were comfortable overall. Food was okay.. flight was on time

6.0 Goodpuravi, Apr 2026
MLA - AMS
Read more KLM reviews

There were no charge points for phones on the economy seats. The seats were comfortable overall. Food was okay.. flight was on time

Terrible last row seats many seats available but no offer to move to better seat

The baggage drop-off in Stuttgart is bad: after online check-in you cannot use the automated baggage drop off as indicated on the website. You can use the terminals but have to cue to 1 of three open and slowly working counters to drop the bags. took about 45 minutes wait time.

Transfer at Amsterdam airport is very convenient and the airport is easy to navigate. Boarding was also quick and easy. Cabin crew were excellent and the meals were good, although lacking in options.

There was fog in Amsterdam so many flights were delayed because of the weather. Air France knew that the flight would be delayed by two hours but still boarded the plane on time. Instead of letting the passengers wait at the gate we were crammed into the plane. It was uncomfortable. No refreshments were given. I couldn’t charge my devices onboard.

Transavia flight. Couldn't select seat or anything prior to flight. No connection with klm systems. Seats are very crammed. Extremely no frills.

Booked connecting flights with KlM. My serving flight was the furthest part of the airport. On arrival in Zurich. My two cases arrived but only one carry on belong to my son. His three suitcase didn't arrive. After enquiring we discovered they were still in Amsterdam. We landed at 11.12. We eventually left the airport just after one.

The flight itself it was great nice food the crew were very nice and helpful, Checking in from Birmingham wasn't great long queues for bag dropped, And I had my hand luggage case taken away from me even though I requested to have it with me as I had breakables items. I was told I can not because of the length of the flight with no explanation at all no options was given for me to take my fragile items out of my case it was taken away with hold buggage I find the staff member who was checking me in very unpleasant !! Can we please be advise if the rules have changed about the the carry on hand luggage it will be easier to be advise on booking your tickect if we not allowed to take the hand luggage with me. Overall I had a good flight .

At the transit could be less time not like 12 hour 6 hours the mix should be 4 hour, thanks

Seats actually fit a human! Snack options were a bit lame but that’s ok

Good but airlines getting smaller. I didn't like the meal but the service was fine. Flight was fine and luggage arrived. So good.

Overall we had a good experience during our flight from San Francisco to Houston.

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.

The flight was canceled the day of the flight. United says it was FAA issue, with some 35 flights canceled and more delayed.

For the most part united was a good experience, how ever when they came by with the snacks and water, they completely passed by my wife and I. As we were in separate rows. On a 5 hr flight we were not offered water

Slight delay but not bad. UA app worked well! Got regular updates of gate changes, etc. Don't have any complaints.

Lufthansa placed a 300 lb passenger in the aisle seat and I was stuck in the middle leaning sideways with no arm rest or ability to sit up straight and fully use my seat (due to encroachment-the seats are very narrow) the entire flight.

Terrible Initial delay for almost an hour before boarding and departing in Seattle. Then a “customary” wait on the tarmac in Newark after landing for half an hour. I call it customary because it happens almost every time I land in Newark. I do t know if it’s Newark or United airline but it’s a travesty . I use Newark because it’s closer than jfk to where I live but am strongly considering switching because of extremely poor in time performance and Condé and delay after landing

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.

If other people in flight, followed instructions and were much cleaner.

Flight was delayed twice which made our arrival extremely late (actually into next day). Not an easy travel. But when we requested assistance for boarding we were really impressed with how they helped us! Strongly praise their assistance.

every single person involved showed their joy, working in the airline industry - it created a very pleasant atmosphere for everyone

For boarding, after family with youngsters, you should have 65 and over. Whatever rules, enforce them. It’s frustrating for those who respect them to see aggressive people rush to the gate out of turn…

A snack would have been nice instead of having to buy food.

The plane was new. Should give more options on food.

No food other than a tiny snack. The flight is too long for not having a more substantial food option, other than buying the overprices and mostly non-plant-based options from the menu.

It was a refreshing experience from the past few times I have travelled with Air Canada.

rerouted on red eye. arrived 9 hours late with no luggage. still missing after 3 days. up to 45 day to deal with it. SHAME

The crew is super friendly and helpful , boarding was quick and easy , the prices are too high for a an airline that doesn’t provide complementary meals or snacks for long flights

The flight crew was nice and courteous. The food was terrible. There are no in-flight entertainment services, the plane is outdated and dilapidated, and the flight is delayed. Both from Newark and Montreal. Too bad.

Very few things and/or people are excellent. It was very good.

We boarded the plane and waited for 30 minutes ultimately for them to cancel the flight due to engineering issues.

Love the little chocolate bars, and consumer rights in EU regarding stepped refunds when flights are delayed.

Staff was rude in business class. Luggage was damaged and nothing was done about it airlines.

We were helped whenever needed and had a pleasant flight.

Good with last minute upgrade Clt to Munich comfortable. Wish same offer had been there Mumbai to Munich

Boarding was slow to begin. Economy board should be accomplished from rear of plane to front, as the entrance doors are front of plane. This would eliminate waiting and passenger congestion on the plane. Meals were good however crew will not check if you want meal if sleeping, should be like Emirates and give seat tags wake for meals or do not disturb. Entertainment ok but screen headphone/jacks were distorted - took 3 sets of headphones to get working properly. Flight crew was amazing, exceptionally nice, professional, best Lufthansa crew I have experienced.

Very poor food and service. Cattle class and treatment is poor by staff

This review has nothing to do with the airline! We will never book through your site again. Florida was in a state of emergency and we needed to change are flight due to a hurricane because of the good chance the airport could close. Chat deal did nothing to help with getting out of Florida early so are trip was not ruined.we had to buy a new ticket and lost out of a lot of money.we where willing to drive at our own expense to Dulles and catch our flight but was told if we didn’t get on in Florida we couldn’t have any of our flights we paid for not even the return flight. Very disappointed in your site

It was the screen on this flight that was bad. It would randomly turn off and change. It was unresponsive. This was the 12 hour flight that the screen annoyed me

Everything you need to know for your flight to Costa Rica

Cabin class types available on flights to Costa Rica

Cabin classes available on flights to Costa Rica. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.