€410 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 15/9. 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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Flight Deals

Best Costa Rica Flight Deals

Cheapest return prices found by our users on KAYAK in the last 72 hours
San José
San José2 stops€682
Liberia
Liberia1 stop€744
San José
San José2 stops€682
Liberia
Liberia1 stop€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

Wed, 2 Dec - Sun, 6 Dec
British Airways Logo
06:40 - 20:49
DUB
-
SJO
20h 09m
2 stops
British Airways Logo
18:55 - 19:40
SJO
-
DUB
18h 45m
1 stop
€682British Airways
Wed, 2 Dec - Sun, 6 Dec
British Airways Logo
06:40 - 20:49
DUB
-
SJO
20h 09m
2 stops
British Airways Logo
18:55 - 19:40
SJO
-
DUB
18h 45m
1 stop
€688British Airways
Wed, 2 Dec - Sun, 6 Dec
British Airways Logo
06:40 - 20:49
DUB
-
SJO
20h 09m
2 stops
British Airways Logo
18:55 - 19:40
SJO
-
DUB
18h 45m
1 stop
€689British Airways
Wed, 2 Dec - Sun, 6 Dec
British Airways Logo
06:40 - 16:40
DUB
-
SJO
16h 00m
1 stop
British Airways Logo
18:55 - 16:50
SJO
-
DUB
15h 55m
1 stop
€706British Airways
Fri, 27 Nov - Mon, 7 Dec
Multiple Airlines Logo
09:00 - 13:55
DUB
-
LIR
34h 55m
1 stop
Multiple Airlines Logo
14:55 - 07:10
LIR
-
DUB
34h 15m
1 stop
€744Multiple Airlines
Thu, 26 Nov - Mon, 7 Dec
Multiple Airlines Logo
05:10 - 13:55
DUB
-
LIR
38h 45m
2 stops
Multiple Airlines Logo
14:55 - 07:10
LIR
-
DUB
34h 15m
1 stop
€747Multiple Airlines
Sat, 4 Jul - Fri, 17 Jul
SWISS Logo
08:40 - 12:55
DUB
-
SJO
35h 15m
1 stop
SWISS Logo
15:50 - 17:50
SJO
-
DUB
19h 00m
1 stop
€755SWISS
Thu, 26 Nov - Mon, 7 Dec
United Airlines Logo
13:35 - 11:44
DUB
-
LIR
28h 09m
1 stop
United Airlines Logo
17:15 - 07:30
LIR
-
DUB
32h 15m
1 stop
€795United Airlines
Thu, 26 Nov - Mon, 7 Dec
United Airlines Logo
13:35 - 11:44
DUB
-
LIR
28h 09m
1 stop
United Airlines Logo
17:15 - 09:55
LIR
-
DUB
34h 40m
1 stop
€796United Airlines
Mon, 2 Nov - Fri, 6 Nov
American Airlines Logo
11:30 - 14:45
DUB
-
LIR
57h 15m
2 stops
American Airlines Logo
13:21 - 07:15
LIR
-
DUB
35h 54m
2 stops
€1,005American 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€410
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly (6% 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 1530 reviews
7.2Entertainment
7.3Food
7.7Comfort
8.4Crew
7.8Boarding
Airline reviews

Outstanding even though the 330 was one of the oldest in the fleet. The difference was the attentiveness and responsiveness of a really experienced flight attendant. For airline food great variety of interesting choices and good tastes supported by a good wine selection.

10.0 ExcellentBob, May 2026
AMS - YYZ
Read more KLM reviews

Outstanding even though the 330 was one of the oldest in the fleet. The difference was the attentiveness and responsiveness of a really experienced flight attendant. For airline food great variety of interesting choices and good tastes supported by a good wine selection.

Brand new plane lots of room the snack was very flavourful and enjoyable

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

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

Empty seats next to me - wish it had been for a longer flight!!

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.

The pilot had to extend the flight time from san antonio to Houston to burn off fuel. This caused a lot of unnecessary stress since we had a tight connection to Aruba. And with no other flights going to Aruba we were worried about spending a night in Houston. We had to to run to our connection because of the flight crews mistake. Not happy.

Broken tray table. Erratic service. Premium economy is more economy than premium- other airlines treat PE much better. No lounge access.

My food prefer was confirmed by email 2x and still the crew claim they had no pre-order. I taken ill while in India so I needed to avoid Indian sauces and spices, so the problem with the preorder was unacceptable. Additionally, is there a new rule to automatically not to disturb passengers? I would like this as an option. Lastly, for breakfast I needed to avoid Indian and I’m allergic to eggs.. therefore the only option was pancakes and guess what was not available!!!

It was a really seamless flight and the entertainment selection was excellent.

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

Vegetarian selection could be better. Bread was too hard to chew.

Poor communication, flight was delayed for preventable reasons. I missed my connection.

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.

Chargers didn’t work, no entertainment and we had to wait for taxiing for easily 40 minutes after arriving early. Bags were late too!

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

Everything but the food was top notch value for the price

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.

I was tired enough to fall asleep soon after takeoff and slept until "we are starting our descent to Toronto" announcement. That's not bad at all.

The crew was amazing! I was a bit surprised and disappointed that there was not wifi available for personal use. The only thing I would change would be the seat cushions. They are not comfortable at all for long flights.

Good boarding but extremely cold temperature in both flights (60 F!).

As we were boarding the plane, there was an unknown substance on my seat. We requested that the cabin crew clean the substance off of the seat, but a member by the name of "Julia" asked us, "Why should I clean this mess up?". She then proceeded to ignore us for the duration of the flight, even asking one of her colleagues to serve us during the meal service instead.

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.

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

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

The legroom was lacking and the entertainment system lacked adequate selection of older films. Modern films are generally not very good.

Catastrophic experience the gate selected customers were picked up to.pay 70 eur for overweight 1-2 kg. While some others were let to board without chcking their carry on bags. Unecessaey drama by Lufthansa that brings nothing just hating them by customers.

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.

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

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.