€351 Find Cheap Flights to Puerto Rico

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 Puerto Rico departing on 6/5. 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

Book Cheap Puerto Rico Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights to Puerto Rico 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 Puerto Rico

Sun, 1 Feb - Sun, 8 Feb
Multiple Airlines Logo
11:30 - 15:59
DUB
-
SJU
32h 29m2 stops
Multiple Airlines Logo
14:28 - 16:50
SJU
-
DUB
22h 22m2 stops
€545Multiple Airlines
Thu, 26 Feb - Mon, 2 Mar
American Airlines Logo
11:30 - 23:40
DUB
-
SJU
16h 10m1 stop
American Airlines Logo
12:30 - 17:05
SJU
-
DUB
24h 35m2 stops
€553American Airlines
Thu, 26 Feb - Mon, 2 Mar
American Airlines Logo
11:30 - 11:40
DUB
-
SJU
28h 10m2 stops
American Airlines Logo
17:18 - 17:05
SJU
-
DUB
19h 47m2 stops
€554American Airlines
Thu, 19 Feb - Thu, 26 Feb
Multiple Airlines Logo
06:00 - 21:12
DUB
-
SJU
19h 12m2 stops
Multiple Airlines Logo
14:16 - 08:45
SJU
-
DUB
14h 29m1 stop
€568Multiple Airlines
Thu, 19 Feb - Sat, 28 Feb
Multiple Airlines Logo
06:00 - 21:12
DUB
-
SJU
19h 12m2 stops
Multiple Airlines Logo
14:24 - 09:20
SJU
-
DUB
14h 56m1 stop
€569Multiple Airlines
Thu, 26 Feb - Mon, 2 Mar
American Airlines Logo
11:30 - 23:40
DUB
-
SJU
16h 10m1 stop
American Airlines Logo
14:30 - 08:40
SJU
-
DUB
14h 10m1 stop
€570American Airlines
Thu, 19 Feb - Sat, 28 Feb
Delta Logo
10:45 - 23:58
DUB
-
SJU
17h 13m2 stops
Delta Logo
06:15 - 08:45
SJU
-
DUB
22h 30m2 stops
€570Delta
Sun, 24 May - Sat, 30 May
JetBlue Logo
11:40 - 20:03
DUB
-
SJU
13h 23m1 stop
JetBlue Logo
21:25 - 09:00
SJU
-
DUB
30h 35m1 stop
€572JetBlue
Thu, 19 Feb - Thu, 26 Feb
Multiple Airlines Logo
06:00 - 21:12
DUB
-
SJU
19h 12m2 stops
Multiple Airlines Logo
14:16 - 08:45
SJU
-
DUB
14h 29m1 stop
€576Multiple Airlines
Thu, 19 Feb - Thu, 26 Feb
KLM Logo
10:45 - 23:56
DUB
-
SJU
17h 11m1 stop
KLM Logo
14:24 - 09:20
SJU
-
DUB
14h 56m1 stop
€580KLM
Booking Insights

KAYAK's insights & trends for flights to Puerto Rico

Get data-powered insights and trends for flights to Puerto Rico 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 Puerto Rico?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ireland to Puerto Rico, 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 Puerto Rico is May, when tickets cost €506 (return) on average. On the other hand, the most expensive months are March and September, when the average cost of round-trip tickets is €1,067 and €922 respectively.

Good to know

Low seasonSeptember
Cheapest flight€351
Best time to beat the crowds but there is an average 25% increase in price.
Most popular time to fly (6% more expensive on average)
Flight from Dublin to San Juan

FAQs - booking Puerto Rico flights

  • How does KAYAK find such low prices on flights from Ireland to Puerto Rico?

    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 Puerto Rico.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ireland to Puerto Rico 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 Puerto Rico?

    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 Puerto Rico 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 Puerto Rico?

    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 Puerto Rico 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 Puerto Rico

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

Reviews of the top airlines flying to Puerto Rico

 
Need help choosing which airline to fly with from Ireland to Puerto Rico? 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.
7.2
American AirlinesOverall score based on 11083 reviews
7.2Comfort
8.0Crew
6.4Food
6.9Entertainment
7.5Boarding
Airline reviews

Crew were all friendly and helpful. It was a short flight so just a beverage service with a cookie. After we were boarded the plane took about 45 minutes to leave the gate but it was New Year’s Eve so not shocking there was some delay. Overall good experience and very grateful.

8.0 ExcellentKim, Jan 2026
ORD - PHL
Read more American Airlines reviews

Crew were all friendly and helpful. It was a short flight so just a beverage service with a cookie. After we were boarded the plane took about 45 minutes to leave the gate but it was New Year’s Eve so not shocking there was some delay. Overall good experience and very grateful.

Gate was overcrowded. Gate agents performed very well. Flight crew was top notch! Efficient & professional & courteous. Both meals not thermalized well. Dinner main dish was actually cold in the center. Almost inedible. Breakfast sandwich was lukewarm.

The only thing to like was that we eventually got to our destination

The business class seats are dated and uncomfortable. The space is bare minimum and there is absolutely no privacy. For $4K, this is not what I expect.

Terrible. Flight delayed for more than 8 hours with only a $12 meal voucher provided for the inconvenience. The airplane did not have breaks on arrival yet they still made us go through the motions and board on time knowing we could not take off then sit for 40+ minutes before having to get of the time. A complete waste of my time. I cannot believe they can stay business with these shenanigans. I’ll avoid this company like the plague moving forward as the lack of accountability is disgraceful.

Premium economy seat was decent. As always poor headphones, poor food and beverage, crew is not overly friendly

No issues. They did change our gate FOUR times in about 30 minutes which was mildly annoying but the flight was fine.

Very poor delay in dfw was really bad n long

The plane was broken so we had to change planes.

After a two hour delay, my flight was CANCELLED! No pilot available. Such BS.

Qatar Airways only had spicy meals on the menu in economy class. You might want to get food in the airport before boarding.

The ride share experience in JFK is terrible. After traveling on a flight, then you need to take a subway to the last stop to get an uber or lyft. Unacceptable. Bad job JetBlue for permitting JFK and Port Authority to do this to your passengers.

Everything was great. I liked the text updates so that I never miss a gate change & I have all the latest info.

JetBlue is always consistent and great, the food is limited in selection, but at least you can grab as much as you want on snacks and drinks at the Blue Locker.

Seats were not too comfortable; it was impossible to locate the underseat power outlet.

The gate and ground staff were excellent, friendly, went out of their way to acknowledge my Mosaic status. The plane was an older Airbus, so the seats were a little worn. The in flight attendant was not very nice, and seemed to be annoyed to be at work or be on this flight. Flight was fast and we landed early and pilots kept us informed.

Except for the 28 minute delay leaving and the earlier reschedule to a later takeoff time the flight was good.

No music app working: no economy meal on five hour flight; hour on tarmac at the end waiting for a gate. Flight itself was smooth and easy.

It took 1-1/2 hours to get our luggage after we landed. That to me is unacceptable

Very well organized both boarding and deplaning. Very satisfied with the service I received.

Everything you need to know for your flight to Puerto Rico

Cabin class types available on flights to Puerto Rico

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