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Cheap flights from Ireland to San Juan from £510

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SJU
15 Sep — 22 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ireland to San Juan

Enter your travel dates to find the best prices.

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 16 August 2026.

Wed 23/911:30 -
1 stop13h 04m
Fri 2/1018:55 -
1 stop32h 25m
Deal found 11/8£544
Tue 22/911:30 -
1 stop33h 42m
Sat 3/1010:30 -
1 stop17h 30m
Deal found 11/8£544
Wed 23/911:30 -
1 stop13h 04m
Tue 6/1006:00 -
1 stop21h 20m
Deal found 11/8£552
Wed 23/911:30 -
1 stop13h 04m
Mon 5/1006:00 -
1 stop22h 00m
Deal found 11/8£553
Thu 17/909:30 -
2 stops28h 54m
Thu 1/1010:16 -
2 stops18h 19m
Deal found 13/8£563
Tue 22/909:50 -
1 stop13h 40m
Sat 3/1015:41 -
1 stop12h 54m
Deal found 11/8£568
Wed 16/909:50 -
1 stop34h 35m
Wed 30/915:41 -
1 stop12h 54m
Deal found 13/8£572
Wed 23/909:30 -
1 stop33h 02m
Tue 6/1010:36 -
2 stops14h 54m
Deal found 11/8£574

Find 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 16 August 2026.

Round-trip from

£529

One-way from

£510

Popular in

July

Cheapest in

May

Average price

£618
21/1-30/1
  • 21/1-30/1
  • 2 total stops
  • 51h 55m total
  • Ireland to San Juan
Search Deals
British Airways
  • British Airways
  • 12/10
  • 2 total stops
  • 18h 22m total
  • Ireland to San Juan
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£21 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Ireland to San Juan that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 16 August 2026.
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

Cheapest return flight

DublinSan Juan

DUB Dublin - SJU San Juan Luis Munoz Marin Intl

DUBSJU

Dublin

Wed 23/9

11:30-19:34

1 stop13h 04m

San Juan Luis Munoz Marin Intl

Fri 2/10

18:55-08:20

1 stop32h 25m

£544
Fastest return journey

DublinSan Juan

DUB Dublin - SJU San Juan Luis Munoz Marin Intl

DUBSJU

Dublin

Tue 22/9

09:50-18:30

1 stop13h 40m

San Juan Luis Munoz Marin Intl

Sat 3/10

11:51-09:35

2 stops16h 44m

£571

DublinSan Juan

DUB Dublin - SJU San Juan Luis Munoz Marin Intl

DUBSJU

Dublin

Thu 21/1

18:35-16:40

1 stop26h 05m

San Juan Luis Munoz Marin Intl

Sun 31/1

14:52-11:15

2 stops16h 23m

£598

DublinSan Juan

DUB Dublin - SJU San Juan Luis Munoz Marin Intl

DUBSJU

Dublin

Fri 22/1

18:35-16:40

1 stop26h 05m

San Juan Luis Munoz Marin Intl

Sat 30/1

14:52-11:15

2 stops16h 23m

£598

DublinSan Juan

DUB Dublin - SJU San Juan Luis Munoz Marin Intl

DUBSJU

Dublin

Tue 1/9

08:40-21:55

2 stops18h 15m

San Juan Luis Munoz Marin Intl

Mon 7/9

07:03-06:30

1 stop18h 27m

£625

DublinSan Juan

DUB Dublin - SJU San Juan Luis Munoz Marin Intl

DUBSJU

Dublin

Wed 16/12

10:45-23:55

1 stop17h 10m

San Juan Luis Munoz Marin Intl

Sat 6/2

07:00-08:45

1 stop21h 45m

£640

DublinSan Juan

DUB Dublin - SJU San Juan Luis Munoz Marin Intl

DUBSJU

Dublin

Tue 22/9

07:30-18:30

2 stops16h 00m

San Juan Luis Munoz Marin Intl

Sat 3/10

14:22-14:50

2 stops19h 28m

£648

DublinSan Juan

DUB Dublin - SJU San Juan Luis Munoz Marin Intl

DUBSJU

Dublin

Sun 27/9

06:30-20:47

2 stops19h 17m

San Juan Luis Munoz Marin Intl

Sun 4/10

14:22-06:30

1 stop35h 08m

£652

DublinSan Juan

DUB Dublin - SJU San Juan Luis Munoz Marin Intl

DUBSJU

Dublin

Wed 23/9

05:55-23:49

2 stops22h 54m

San Juan Luis Munoz Marin Intl

Tue 6/10

06:45-08:15

2 stops20h 30m

£656

DublinSan Juan

DUB Dublin - SJU San Juan Luis Munoz Marin Intl

DUBSJU

Dublin

Tue 22/9

08:55-23:49

2 stops19h 54m

San Juan Luis Munoz Marin Intl

Sat 3/10

12:56-10:00

2 stops16h 04m

£657

Flights are sorted by cheapest return flights first.

Deals found on 15/8

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

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, May is the cheapest month in which you can book a flight from Ireland to San Juan (average of £471). Flying from Ireland to San Juan in July is currently the most expensive (average of £727). 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 insights into the airlines that provide service to San Juan. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Juan. Reviews last updated 16 August 2026.
Get a feel of what it's like to fly with American 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.
American Airlines
7.1
Good
11,941 reviews
Check prices

Entertainment

6.8

Boarding

7.5

Crew

7.9

Overall

7.1

Comfort

7.2

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Hiram K,Sept 2023

JFK - CLT

Worst Airlines - services suck. Stuck at JFK whole night with 2 small kids - they didnt care even infant baby. Never ever fly American Airlines again - Peace !!
American Airlines
7.1
Good
11,941 reviews
American Airlines
7.1
Good
11,941 reviews
Check prices

Entertainment

6.8

Boarding

7.5

Crew

7.9

Overall

7.1

Comfort

7.2

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Hiram K,Sept 2023

JFK - CLT

Worst Airlines - services suck. Stuck at JFK whole night with 2 small kids - they didnt care even infant baby. Never ever fly American Airlines again - Peace !!

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.

  • How long is the flight from Ireland to San Juan?

    Departing from Ireland to San Juan will take you 13h 04m. Airlines will cover a distance of 3963 mi.

  • 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, May is the cheapest month in which you can book a flight from Ireland to San Juan (average of £471). Flying from Ireland to San Juan in July is currently the most expensive (average of £727). 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

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

Top airline flying from Ireland to San Juan

Discover the top airline that operate flights from Ireland to San Juan. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 16 August 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest£574Average£690FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

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?

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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