€305 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 18/4. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Costa Rica

Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Best Costa Rica Flight Deals

Cheapest return prices found by our users on KAYAK in the last 72 hours
San José
San José1 stop€519
Liberia
Liberia1 stop€525
San José
San José1 stop€519
Liberia
Liberia1 stop€525

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

Mon, 4 May - Wed, 13 May
JetBlue Logo
11:40 - 22:14
DUB
-
SJO
17h 34m
1 stop
JetBlue Logo
23:59 - 09:00
SJO
-
DUB
26h 01m
1 stop
€519JetBlue
Wed, 6 May - Wed, 13 May
JetBlue Logo
11:30 - 12:40
DUB
-
LIR
32h 10m
1 stop
JetBlue Logo
14:00 - 09:00
LIR
-
DUB
36h 00m
1 stop
€525JetBlue
Wed, 6 May - Wed, 13 May
JetBlue Logo
11:40 - 12:40
DUB
-
LIR
32h 00m
1 stop
JetBlue Logo
14:00 - 09:00
LIR
-
DUB
36h 00m
1 stop
€527JetBlue
Tue, 23 Jun - Tue, 30 Jun
Multiple Airlines Logo
09:20 - 22:00
DUB
-
SJO
19h 40m
1 stop
Multiple Airlines Logo
19:25 - 22:15
SJO
-
DUB
19h 50m
1 stop
€716Multiple Airlines
Tue, 23 Jun - Tue, 30 Jun
Multiple Airlines Logo
09:50 - 22:00
DUB
-
SJO
19h 10m
2 stops
Multiple Airlines Logo
19:25 - 22:15
SJO
-
DUB
19h 50m
1 stop
€718Multiple Airlines
Sun, 3 May - Sun, 10 May
United Airlines Logo
12:30 - 12:10
DUB
-
LIR
30h 40m
2 stops
United Airlines Logo
15:27 - 11:10
LIR
-
DUB
36h 43m
2 stops
€776United Airlines
Wed, 6 May - Wed, 13 May
Lufthansa Logo
05:55 - 20:05
DUB
-
LIR
21h 10m
3 stops
Lufthansa Logo
21:15 - 22:15
LIR
-
DUB
42h 00m
2 stops
€782Lufthansa
Thu, 4 Jun - Mon, 8 Jun
United Airlines Logo
09:30 - 10:11
SNN
-
SJO
31h 41m
2 stops
United Airlines Logo
12:44 - 10:15
SJO
-
SNN
14h 31m
1 stop
€784United Airlines
Thu, 4 Jun - Mon, 8 Jun
Air Canada Logo
12:30 - 20:35
SNN
-
SJO
39h 05m
2 stops
Air Canada Logo
07:40 - 10:15
SJO
-
SNN
19h 35m
2 stops
€790Air Canada
Wed, 6 May - Wed, 13 May
Lufthansa Logo
05:55 - 20:05
DUB
-
LIR
21h 10m
3 stops
Lufthansa Logo
21:15 - 22:15
LIR
-
DUB
42h 00m
2 stops
€792Lufthansa
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.

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 €684 (return) on average. On the other hand, the most expensive months are December and January, when the average cost of round-trip tickets is €883 and €852 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 3 weeks before departure, which saves you about 18% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight€305
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly (4% 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 3 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 1477 reviews
8.4Crew
7.1Entertainment
7.6Comfort
7.3Food
7.8Boarding
Airline reviews

It was really nice experience by flying this klm flight.I personally recommend everyone to please try this klm flight

10.0 Excellentsmit, Mar 2026
BLR - AMS
Read more KLM reviews

It was really nice experience by flying this klm flight.I personally recommend everyone to please try this klm flight

It was really nice journey i personally recommend klm flight

Crew is not the cheerful type. very slow meal service (this is their style as have flown this many times)

Flight was on time, staff are friendly and helpful onboard.

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

Delay and had to run between flight to get my connection due to this delay but besides that the overall experience was ok. I arrived with just an hour of delay.

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

Couldn’t get boarding pass in SLC even with help from a redcoat, so had to find a desk in AMS to get boarding pass. Technical problems so not sure why. Very inconvenient. The KLM app is not as user friendly as most apps. Also had to wait almost an hour on the tarmac for a fuel truck, which caused us to miss a connecting bus in LUX.

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

Given I (and I’m assuming most people) have both carry in and a personal item included in their fare, I find it very unfair that on neither of my flights I was able to use the overhead for my small backpack because they were completely rammed with luggage, people personal items, jackets, hats and other items. So the only item I brought in had to be stuffed under my seat while they had their leg room and sat comfortable with all of their items in the overhead. This has to stop because I was uncomfortable on both flights when I only had one smaller item that could not be checked due to its contents (medication etc). Plenty of people could have checked theirs but chose not to and then took up the space allotment for 2 people.

I couldn’t make my first flight due to weather delays trapping us in the town we were in. Then I had to buy a new ticket

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

Entertainment kept turning itself off. Gave up on watching a movie.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

I so appreciate the crew members on each flight of United. They are outstanding.

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

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.

Boarding a bit chaotic, but that seems to be mostly about extra security in Lima, not AC. Left on-time, arrived slightly early. Good flight

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

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.