£523 Find Cheap Flights from Ireland to Puerto Rico

1 adult
1 adult, Economy

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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 April, when tickets cost £477 (return) on average. On the other hand, the most expensive months are October and December, when the average cost of round-trip tickets is £791 and £758 respectively.

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Good to know - Cheap tickets from Ireland to Puerto Rico

Low seasonSeptember
High seasonJuly
Cheapest flight£410
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly (21% more expensive on average)
Flight from Dublin to San Juan

FAQs for booking flights from Ireland to Puerto Rico

  • 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 Saturday when return tickets can be as cheap as £592. On the other hand, the most expensive day to fly is Monday, when return prices are £779 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 round-trip flights cost £921 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 £973.

Book cheap flights from Ireland to Puerto Rico

Cheapest flights to Puerto Rico from Ireland found in 2025

Recent return flight deals

1/11Sat
2 stops
27h 40mDUB-SJU
16/11Sun
2 stops
13h 45mSJU-DUB
£523
9/7Wed
1 stopDelta
16h 23mDUB-SJU
16/7Wed
1 stopDelta
21h 15mSJU-DUB
£551
9/7Wed
1 stopKLM
16h 23mDUB-SJU
16/7Wed
2 stopsKLM
18h 01mSJU-DUB
£557
26/7Sat
1 stopJetBlue
17h 11mDUB-SJU
2/8Sat
1 stopJetBlue
12h 35mSJU-DUB
£583
27/7Sun
1 stopJetBlue
19h 11mDUB-SJU
3/8Sun
1 stopJetBlue
12h 35mSJU-DUB
£584
9/7Wed
2 stopsKLM
19h 44mDUB-SJU
16/7Wed
2 stopsKLM
17h 26mSJU-DUB
£585
10/7Thu
1 stopKLM
14h 39mDUB-SJU
13/8Wed
1 stopKLM
16h 29mSJU-DUB
£635
26/7Sat
2 stopsDelta
17h 23mDUB-SJU
2/8Sat
1 stopDelta
21h 30mSJU-DUB
£650
26/7Sat
2 stopsUnited Airlines
34h 24mDUB-SJU
1/8Fri
2 stopsUnited Airlines
28h 05mSJU-DUB
£759
26/7Sat
2 stopsUnited Airlines
25h 40mDUB-SJU
2/8Sat
2 stopsUnited Airlines
22h 25mSJU-DUB
£775

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Recent one-way flight deals

11/7Fri
1 stopJetBlue
19h 09mDUB-SJU
£410

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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.
First Class flights to Puerto Rico
Business Class flights to Puerto Rico
Prem Econ Class flights to Puerto Rico
Economy class flights to Puerto Rico

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