In terms of precipitation, rainfall in San Juan ranges from 55.0 - 156.0 inches per month. November is typically the wettest month, when rainfall can reach 156.0 mm. March is typically the driest time to visit San Juan when rainfall is around 55.0 mm.

If weather is an important factor for your trip to San Juan, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 28.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 25.0 C).

What is the cheapest month to fly from Ireland to San Juan?

April can be a great time to fly to San Juan from Ireland with a flight ticket averaging about £615. Cheapflights users have found deals in the month of April for as cheap as £412. The most expensive prices can be found in the month of October.

What is the cheapest time of day to fly from IE to SJU?

When flying from Ireland to San Juan, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Can I find deals for flights from Ireland to San Juan that include hotel bookings?

Yes. In addition to deals on Ireland to San Juan flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Ireland to San Juan?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ireland to San Juan.

Can I find deals for business class flights from Ireland to San Juan?

Yes. Cheapflights offers flight deals from Ireland to San Juan by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£651+ Flights from Ireland to San Juan

Cheap flight deals from Ireland to San Juan

Round-trip from	£510
Popular in	October
Cheapest in	April
Average price	£745

JetBlue
12/9-16/9
2 total stops
29h 24m total
Ireland to San Juan

Search Deals

Highest demand for flights based on searches. 8% potential increase in price (£41 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).

Search Deals

Average for round-trip flights in July 2025

Search Deals

Find flight deals from Ireland to San Juan

Cheapest flights from Ireland to San Juan
Explore the most affordable flight options available from Ireland to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 July 2025.

Mon 25/810:40DUB - SJU

1 stop19h 09mJetBlue

Wed 10/914:05SJU - DUB

1 stop13h 15mJetBlue

Deal found 3/7£511

Thu 13/1108:55DUB - SJU

2 stops18h 55mMultiple Airlines

Thu 27/1114:26SJU - DUB

1 stop14h 19mMultiple Airlines

Deal found 3/7£514

Thu 13/1110:45DUB - SJU

1 stop17h 05mKLM

Thu 27/1114:08SJU - DUB

1 stop15h 12mKLM

Deal found 3/7£517

Sun 26/1009:45DUB - SJU

1 stop16h 36mDelta

Sat 8/1107:30SJU - DUB

2 stops20h 15mDelta

Deal found 1/7£554

Fri 19/1208:45DUB - SJU

2 stops19h 40mBritish Airways

Sat 27/1206:40SJU - DUB

2 stops23h 35mBritish Airways

Deal found 3/7£635

Sun 26/1013:35DUB - SJU

2 stops26h 42mUnited Airlines

Fri 7/1102:05SJU - DUB

2 stops26h 05mUnited Airlines

Deal found 1/7£682

Fri 19/1213:35DUB - SJU

1 stop15h 01mLufthansa

Sat 27/1214:10SJU - DUB

1 stop13h 20mLufthansa

Deal found 3/7£692

Thu 18/1208:40DUB - SJU

2 stops18h 00mAmerican Airlines

Sat 27/1206:40SJU - DUB

1 stop18h 25mAmerican Airlines

Deal found 3/7£712

Wed 12/1104:25DUB - SJU

2 stops23h 28mTAP AIR PORTUGAL

Thu 27/1115:52SJU - DUB

2 stops27h 28mTAP AIR PORTUGAL

Deal found 3/7£789

Best flights from Ireland to San Juan
Discover carefully curated flight deals from Ireland to San Juan that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 3 July 2025.

Fri 12/911:30DUB - SJU

1 stop14h 54mJetBlue

Tue 16/912:50SJU - DUB

1 stop14h 30mJetBlue

Deal found 30/6£510

Sun 26/1009:45DUB - SJU

1 stop16h 36mDelta

Sat 8/1107:30SJU - DUB

2 stops20h 15mDelta

Deal found 1/7£554

Sun 26/1010:45DUB - SJU

1 stop29h 15mKLM

Sat 8/1118:20SJU - DUB

1 stop33h 25mKLM

Deal found 1/7£558

Wed 1/1009:10DUB - SJU

2 stops19h 37mMultiple Airlines

Fri 10/1013:10SJU - DUB

1 stop15h 05mMultiple Airlines

Deal found 2/7£569

Fri 19/1208:45DUB - SJU

2 stops19h 40mBritish Airways

Sat 27/1206:40SJU - DUB

2 stops23h 35mBritish Airways

Deal found 3/7£635

Fri 19/1213:35DUB - SJU

1 stop15h 01mLufthansa

Sat 27/1214:10SJU - DUB

1 stop13h 20mLufthansa

Deal found 3/7£692

Fri 19/1213:35DUB - SJU

1 stop15h 01mUnited Airlines

Sat 27/1217:50SJU - DUB

2 stops33h 40mUnited Airlines

Deal found 3/7£706

Thu 18/1208:40DUB - SJU

2 stops18h 00mAmerican Airlines

Sat 27/1206:40SJU - DUB

1 stop18h 25mAmerican Airlines

Deal found 3/7£712

Fri 19/1214:00DUB - SJU

1 stop14h 37mAer Lingus

Sat 27/1202:05SJU - DUB

1 stop23h 10mAer Lingus

Deal found 3/7£1,006

Last-minute flights from Ireland to San Juan
Discover last-minute flight deals from Ireland to San Juan. Data last updated 3 July 2025 and is based on user searches.

Thu 10/710:35DUB - SJU

2 stops27h 55mMultiple Airlines

Tue 12/803:05SJU - DUB

2 stops25h 30mMultiple Airlines

Deal found 3/7£1,015

Sat 16/811:35DUB - SJU

3 stops32h 35mMultiple Airlines

Fri 22/802:11SJU - DUB

3 stops27h 19mMultiple Airlines

Deal found 2/7£674

Sat 16/808:55DUB - SJU

2 stops19h 56mKLM

Sat 23/817:46SJU - DUB

1 stop33h 59mKLM

Deal found 2/7£683

Sat 16/809:30DUB - SJU

2 stops18h 26mAmerican Airlines

Sat 23/813:36SJU - DUB

2 stops17h 04mAmerican Airlines

Deal found 2/7£764

Mon 18/809:20DUB - SJU

2 stops19h 37mUnited Airlines

Mon 25/813:25SJU - DUB

2 stops15h 55mUnited Airlines

Deal found 3/7£778

Mon 25/810:40DUB - SJU

1 stop19h 09mJetBlue

Wed 10/914:05SJU - DUB

1 stop13h 15mJetBlue

Deal found 3/7£511

Mon 25/813:15DUB - SJU

1 stop15h 36mDelta

Wed 10/907:30SJU - DUB

2 stops21h 30mDelta

Deal found 3/7£563

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ireland to San Juan that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Mon 25/8

10:40-00:49

1 stop19h 09m

San Juan Luis Munoz Marin Intl

Wed 10/9

14:05-08:20

1 stop13h 15m

£511

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Thu 13/11

08:55-23:50

2 stops18h 55m

San Juan Luis Munoz Marin Intl

Thu 27/11

14:26-08:45

1 stop14h 19m

£514

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Thu 13/11

10:45-23:50

1 stop17h 05m

San Juan Luis Munoz Marin Intl

Thu 27/11

14:08-09:20

1 stop15h 12m

£517

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Sun 26/10

09:45-22:21

1 stop16h 36m

San Juan Luis Munoz Marin Intl

Sat 8/11

07:30-07:45

2 stops20h 15m

£554

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Fri 19/12

08:45-00:25

2 stops19h 40m

San Juan Luis Munoz Marin Intl

Sat 27/12

06:40-10:15

2 stops23h 35m

£635

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Sun 26/10

13:35-12:17

2 stops26h 42m

San Juan Luis Munoz Marin Intl

Fri 7/11

02:05-08:10

2 stops26h 05m

£682

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Fri 19/12

13:35-00:36

1 stop15h 01m

San Juan Luis Munoz Marin Intl

Sat 27/12

14:10-07:30

1 stop13h 20m

£692

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Thu 18/12

08:40-22:40

2 stops18h 00m

San Juan Luis Munoz Marin Intl

Sat 27/12

06:40-05:05

1 stop18h 25m

£712

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Wed 12/11

04:25-23:53

2 stops23h 28m

San Juan Luis Munoz Marin Intl

Thu 27/11

15:52-23:20

2 stops27h 28m

£789

Flights are sorted by cheapest return flights first.

Deals found on 3/7

Best time to book a flight from Ireland to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from Ireland with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ireland to San Juan

What is the cheapest month to book a flight from Ireland to San Juan?

Currently, April is the cheapest month in which you can book a flight from Ireland to San Juan (average of £631). Flying from Ireland to San Juan in July is currently the most expensive (average of £1,027). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing San Juan

Get a feel of what it's like to fly with Delta, KLM, andUnited Airlines from Ireland to San Juan by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,970 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Rona,Feb 2024

MSP - DEN

It was a good experience other than a short delay.

Delta

8.0

Very Good

7,970 reviews

Delta

8.0

Very Good

7,970 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Rona,Feb 2024

MSP - DEN

It was a good experience other than a short delay.

KLM

7.8

Good

1,366 reviews

Delta

8.0

Very Good

7,970 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Rona,Feb 2024

MSP - DEN

It was a good experience other than a short delay.

United Airlines

7.4

Good

8,845 reviews

Delta

8.0

Very Good

7,970 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Rona,Feb 2024

MSP - DEN

It was a good experience other than a short delay.

JetBlue

7.3

Good

2,916 reviews

Delta

8.0

Very Good

7,970 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Rona,Feb 2024

MSP - DEN

It was a good experience other than a short delay.

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very Good

7,970 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Rona,Feb 2024

MSP - DEN

It was a good experience other than a short delay.

Related info for your journey

Can I find deals for flights from Ireland to San Juan that include hotel bookings?
Yes. In addition to deals on Ireland to San Juan flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Ireland to San Juan?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ireland to San Juan.
Can I find deals for business class flights from Ireland to San Juan?
Yes. Cheapflights offers flight deals from Ireland to San Juan by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Ireland to San Juan?
Currently, April is the cheapest month in which you can book a flight from Ireland to San Juan (average of £631). Flying from Ireland to San Juan in July is currently the most expensive (average of £1,027). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Ireland to San Juan

Heathrow to Luis Munoz Marin Intl flights

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Dublin to Luis Munoz Marin Intl flights

Newcastle upon Tyne to Luis Munoz Marin Intl flights

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Complete your trip

San Juan car hire

San Juan Luis Munoz Marin Intl Airport car hire

Ponce Mercedita Airport car hire

San Juan Isla Grande Airport car hire

Vieques Airport car hire

Condado car hire

Santurce car hire

San Juan Antiguo car hire

Hato Rey Sur car hire

Hato Rey Norte car hire

Gobernador Piñero car hire

Hato Rey Central car hire

Fly with Cheapflights

How does Cheapflights help users find flights from Ireland to San Juan?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Ireland to San Juan. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Ireland to San Juan?

Cheapflights simply makes it quick and affordable to book flights from Ireland to San Juan by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Ireland to San Juan with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Ireland to San Juan flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Ireland to San Juan become cheaper?

Yes, Cheapflights offers price alerts on Ireland to San Juan flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from Ireland to San Juan from £510

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Ireland to San Juan

Keep the following information in mind while searching for Ireland to San Juan flight deals. Data was last updated 3 July 2025.

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Ireland to San Juan

Cheapest flights from Ireland to San JuanExplore the most affordable flight options available from Ireland to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 July 2025.

Explore the most affordable flight options available from Ireland to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 July 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ireland to San Juan that are best for you.

Best time to book a flight from Ireland to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from Ireland with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Ireland to San Juan

What is the cheapest month to book a flight from Ireland to San Juan?

Reviews of airlines servicing San Juan

Get a feel of what it's like to fly with Delta, KLM, andUnited Airlines from Ireland to San Juan by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Ireland to San Juan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

Can I find deals for flights from Ireland to San Juan that include hotel bookings?

How can I find direct flights from Ireland to San Juan?

Can I find deals for business class flights from Ireland to San Juan?

What is the cheapest month to book a flight from Ireland to San Juan?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ireland to San Juan

See prices for flight routes from nearby airports that may be better suited for you.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ireland to San Juan?

Why should you use Cheapflights to find cheap flight tickets from Ireland to San Juan?

Can Cheapflights find flights from Ireland to San Juan with no change fees?

Can Cheapflights notify me if prices for flights from Ireland to San Juan become cheaper?

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Ireland to San Juan
Explore the most affordable flight options available from Ireland to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 July 2025.