€303 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 20/1. 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

Thu, 26 Mar - Thu, 9 Apr
American Airlines Logo
11:30 - 22:40DUB-SJU
15h 10m1 stop
American Airlines Logo
13:45 - 06:30SJU-DUB
11h 45m1 stop
€430American Airlines
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Sun, 29 Mar - Tue, 7 Apr
American Airlines Logo
12:40 - 10:56DUB-SJU
27h 16m2 stops
American Airlines Logo
11:45 - 09:50SJU-DUB
17h 05m2 stops
€552American Airlines
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Mon, 12 Jan - Sun, 25 Jan
American Airlines Logo
11:30 - 17:01DUB-SJU
33h 31m2 stops
American Airlines Logo
07:00 - 09:50SJU-DUB
22h 50m2 stops
€553American Airlines
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Mon, 30 Mar - Tue, 7 Apr
American Airlines Logo
12:40 - 09:00DUB-SJU
25h 20m2 stops
American Airlines Logo
11:45 - 09:50SJU-DUB
17h 05m2 stops
€556American Airlines
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Sun, 29 Mar - Fri, 3 Apr
American Airlines Logo
12:40 - 20:49DUB-SJU
13h 09m1 stop
American Airlines Logo
01:30 - 09:45SJU-DUB
27h 15m1 stop
€569American Airlines
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Mon, 30 Mar - Wed, 8 Apr
Multiple Airlines Logo
09:30 - 20:34DUB-SJU
16h 04m2 stops
Multiple Airlines Logo
06:59 - 09:45SJU-DUB
21h 46m1 stop
€572Multiple Airlines
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Wed, 8 Apr - Fri, 24 Apr
American Airlines Logo
09:30 - 11:00DUB-SJU
30h 30m2 stops
American Airlines Logo
15:45 - 09:55SJU-DUB
13h 10m1 stop
€573American Airlines
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Mon, 12 Jan - Sun, 25 Jan
Multiple Airlines Logo
11:30 - 09:47DUB-SJU
26h 17m2 stops
Multiple Airlines Logo
19:44 - 10:15SJU-DUB
34h 31m3 stops
€588Multiple Airlines
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Wed, 25 Mar - Thu, 9 Apr
United Airlines Logo
12:05 - 21:22DUB-SJU
13h 17m1 stop
United Airlines Logo
13:25 - 07:30SJU-DUB
13h 05m1 stop
€620United Airlines
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Wed, 25 Mar - Fri, 10 Apr
United Airlines Logo
12:05 - 21:22DUB-SJU
13h 17m1 stop
United Airlines Logo
16:55 - 10:40SJU-DUB
12h 45m1 stop
€649United Airlines
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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 €510 (return) on average. On the other hand, the most expensive months are March and September, when the average cost of round-trip tickets is €1,077 and €931 respectively.

Good to know

Low seasonSeptember
Cheapest flight€303
Best time to beat the crowds but there is an average 26% increase in price.
Most popular time to fly (3% 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.

  • What is the cheapest day to fly to Puerto Rico?

    Based on KAYAK data, the cheapest day to fly to Puerto Rico is Monday when return tickets can be as cheap as €718. On the other hand, the most expensive day to fly is Saturday, when return prices are €899 on average.

  • What is the cheapest time of day to fly to Puerto Rico?

    The cheapest time of day to fly to Puerto Rico is generally in the morning, when retur flights cost €829 on average. Morning departures are around 5% cheaper than evening flights, on average. The most expensive time of day to fly to Puerto Rico is generally in the afternoon, which is peak travel time and where the average cost of a ticket is €913.

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 11040 reviews
6.5Food
7.2Comfort
7.5Boarding
6.9Entertainment
8.0Crew
Airline reviews

I have a gluten allergy so did have any food

8.0 ExcellentKerry, Nov 2025DFW - RAP
Read more American Airlines reviews

I have a gluten allergy so did have any food

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.

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.

Almost a 6 hour flight and the only food option is a cheese plate… and chips. Also how is it there are no options for texting on American. I’ll be going back to delta and united.

A cookie and a soda, packed like sardines, will never be a positive experience. Also, boarded a 5:30 flight at 7:45pm

Pitch was very small. Knees were on the seat back in front of me.

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.

I paid extra for a seat closer to the front. The TV didn’t work at all for the entire flight. Would have been nice to know before I purchased an “upgraded “ seat

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.

The plane was late to leave.. Internet was lousy. TV was not working. when we arrived, We stayed on the plane for a long time before we got to the gate. It took us a long time to retrieve our luggage because they didn’t know what carousel to send them to. It was a bad experience.

flight cancelled after 2 delays. left us sitting in JFK at 1am. no customer service to assist rebooking.

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

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.