€336 Find Cheap Flights 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 Ireland to Costa Rica departing on 12/4. 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 José2 stops€605
Liberia
Liberia2 stops€629
San José
San José2 stops€605
Liberia
Liberia2 stops€629

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, 7 Feb - Sat, 14 Feb
Multiple Airlines Logo
19:50 - 15:30
DUB
-
SJO
49h 40m
2 stops
Multiple Airlines Logo
21:50 - 18:15
SJO
-
DUB
14h 25m
1 stop
€605Multiple Airlines
Tue, 21 Apr - Mon, 27 Apr
Multiple Airlines Logo
18:35 - 20:05
DUB
-
LIR
32h 30m
2 stops
Multiple Airlines Logo
14:50 - 08:15
LIR
-
DUB
34h 25m
1 stop
€629Multiple Airlines
Mon, 2 Feb - Mon, 16 Feb
Multiple Airlines Logo
09:00 - 00:05
DUB
-
SJO
21h 05m
1 stop
Multiple Airlines Logo
20:10 - 12:00
SJO
-
DUB
33h 50m
2 stops
€631Multiple Airlines
Wed, 22 Apr - Mon, 27 Apr
Air Canada Logo
09:50 - 13:40
DUB
-
LIR
34h 50m
1 stop
Air Canada Logo
14:50 - 08:15
LIR
-
DUB
34h 25m
1 stop
€635Air Canada
Tue, 21 Apr - Mon, 27 Apr
Air Canada Logo
09:50 - 13:30
DUB
-
LIR
34h 40m
1 stop
Air Canada Logo
14:50 - 08:15
LIR
-
DUB
34h 25m
1 stop
€636Air Canada
Fri, 6 Feb - Sat, 14 Feb
Multiple Airlines Logo
05:45 - 15:30
DUB
-
SJO
39h 45m
2 stops
Multiple Airlines Logo
21:50 - 18:15
SJO
-
DUB
14h 25m
1 stop
€647Multiple Airlines
Thu, 5 Feb - Mon, 9 Feb
United Airlines Logo
10:40 - 12:55
DUB
-
LIR
32h 15m
1 stop
United Airlines Logo
08:35 - 07:30
LIR
-
DUB
16h 55m
2 stops
€719United Airlines
Sun, 1 Feb - Sat, 28 Feb
United Airlines Logo
09:30 - 12:56
DUB
-
SJO
33h 26m
2 stops
United Airlines Logo
08:45 - 09:55
SJO
-
DUB
19h 10m
2 stops
€720United Airlines
Thu, 14 May - Mon, 18 May
British Airways Logo
21:15 - 19:07
SNN
-
SJO
28h 52m
2 stops
British Airways Logo
14:22 - 16:10
SJO
-
SNN
42h 48m
2 stops
€845British Airways
Thu, 14 May - Mon, 18 May
British Airways Logo
16:50 - 19:07
SNN
-
SJO
33h 17m
2 stops
British Airways Logo
12:12 - 16:10
SJO
-
SNN
20h 58m
2 stops
€850British Airways
Booking Insights

KAYAK's insights & trends for flights to Costa Rica

Get data-powered insights and trends for flights 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 Ireland to Costa Rica?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ireland 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 Ireland to Costa Rica is September, when tickets cost €675 (return) on average. On the other hand, the most expensive months are December and March, when the average cost of round-trip tickets is €983 and €856 respectively.

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 14% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight€336
Best time to beat the crowds (9% less expensive on average)
Most popular time to fly and prices are also 9% lower 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.
7.4
Air FranceOverall score based on 1523 reviews
8.1Crew
7.0Entertainment
7.4Boarding
7.0Food
7.3Comfort
Airline reviews

Communication on the delay, rebooking and how to get a hotel was poor. Mails, airport check-in and transfer desk said different things.

4.0 OkayAnonymous, Jan 2026
MRU - CDG
Read more Air France reviews

Communication on the delay, rebooking and how to get a hotel was poor. Mails, airport check-in and transfer desk said different things.

Not consistent with the food quality (I mean taste not freshness)

Food was really mediocre for premium economy in comparison to other airlines… the crew was nowhere to be found… 14 hour flight…

Our flight crew were terrific. And they handle a difficult passenger with finesse.

Excellent, Lima to Paris. But Paris to Amsterdam, delayed, missed my flight and KLM treated its missed flights passengers very badly, terribly bad. No hotel accommodation given. Passengers were told to find their own hotel accommodation and claim at reasonable rate and left the booth and literally with armed Police Officers listening to passengers complains. For three hours, after moving by Uber from hotel to hotel and calling and booking online, no hotel was available. I had to return to the airport and seat/sleep on the benches, suffering the cold, and rats running around until my new allocated flight the next day. It was the most terrible KLM treatment even seen and being a Business Class passenger. Still mentally suffering to date as a result.

3 hour delay but out of their control. App said I get vouchers but when I applied for them, they were nowhere to be found in my account

I bought business class tickets but the seats are exactly like economy with no comfort seats nor an empty seat next to me provided. Very poor, low quality airline.

I don't understand the concept of paying to get your personal luggage onboard and then asked to check it in.... either sell the space or don't, its a hassle to carry those all through the airport just to make a check in at the last minute.

The food was great and the service and attitude was amazing!!

It was a great experience. The only thing I would have changed was that the bathrooms were never cleaned and they got very dirty.

Going to Tokyo was not so good. Back to Detroit was excellent.

They charged a fee for 1st bag checked. Others in same party were free.

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.

One bag is incorrect and not acceptable for an international flight. The food was not just good. I won't fly with them again.

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.

Where the plane landed and the next grate to get to is a LONG LONG LONG walk again if one is not fit and healthy with no carts to assist. It sucks

The food quality sucks. One must starve if they do not eat flesh Or wheat based products Some variety would be expected. The trivial amount of snacks and or food is inhumane

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

All of the United employees I interacted with were professional and courteous. The aircraft was clean, the food on the flight was good. No complaints here.

Flight was excellent. The staff was a great comfort with the Captain meeting everyone on board The delay was unforeseen but an inconvenience.almost 3hours was too long to sit in the plane before the flight.

Obviously the leg room...but I guess that's what business class would be ..expensive though.

This was the end of our honeymoon and our connecting flight to Philly was canceled while we were in our layover due to “maintenance”. Filing a claim to get compensation but would not fly Air Canada again.

Flight was not affected by the Air Canada strike. Complimentary beer and wine offered on flight.

Real smooth and easy, Real good leg room in coach!

Flight was canceled due to labor dispute. Their customer service said I might be ok since strike was on sat. and I was flying Friday. The next morning it was canceled. It can ruin a trip and add stress.

Pros: The airplane was new and had in-flight entertainment (tablet behind seats) with new movies instead of watching on personal devices. Cons: the flight time was changed without informing us. When I booked the flight, the time was 13:30pm (also in the email confirmation). However, when I reached the airport, the time was conveniently changed to 14:55pm. When I asked at the counter, they said the flight always took off at this time. The booking was made by Air Canada, but the flight was operated by United.

Our return trips from Lisbon to Vancouver were the worst flights I have EVER been on. Our seats from Frankfurt to Vancouver were most uncomfortable. The 'table ' was not only dirty but broken. My headrest ' support' too was broken, leaving a spot where a broken attachment poked at your head. My food was the worst food I have ever had on any flight. Staff....they all looked and acted as though they hated their jobs!! The Calgary to Vancouver wasnt much better. We had NO services even though we were told of complimentary beverages etc.. That didnt happen. I asked for window seats, assured by the ticket agent I was given a window seat...NOT. Please dont make me go on. Our trip from Vancouver TO Madrid was great......so we were most discouraged at the events of our return trip.

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

Very nice Crew! Not much entertainment, but it was only a short flight, so it is okay for this flight.

I booked extra leg room, due to seat neighbor i now consider extra shoulder and arm room as well. Seems like the seats shrink in width now The crew was very friendly and professional ( 100%). Food was good not great, breakfast was bad, a dry slice of bread would have been better. Facilities clean.

The seat space seemed small especially when the person ahead reclined but other than that, very good.

Bought a seat in a flight that got changed out so ended up paying for a seat I would have had if I hadn't paid.

Food was much better than my outbound flight. On-time. Good service. I had a problem with my entertainment screen, but the attendant fixed it promptly.

Staff was very professional friendly food was okay i used the lufthansa app and it was great told me immediately what gate I should go i would fly with lufthansa anytime

Crew was very courteous, friendly and professional. Caring and attentive.

Very friendly, service oriented and responsive crew. Very pleased with th service!

Good legroom. Attentive crew. Wine quality poor, you can do better

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

The plane was very clean. The bathroom was clean as well. The land crew were very polite and informative and helpful. They informed me that there is a long way and challenging to go from international terminal to national terminal and in addition to getting my suitcases and going through customs and dropping them again for my second leg of trip which was San Francisco to Los Angeles . I have left knee issue and had a recent fall with aching muscles all over, the land crew suggested wheelchair help for me, God bless her. If I did not have help, I could not make it to my last terminal. Thank you UNITED AIRLINE!

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.