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Cheap flights from Ireland to San Juan from £440

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SJU
22 Apr — 29 Apr1
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 23 March 2026.

Mon 4/511:40
DUB
-
SJU
1 stop14h 21m
JetBlue
Mon 11/521:59
SJU
-
DUB
1 stop30h 01m
JetBlue
Deal found 20/3£440
Tue 12/510:40
DUB
-
SJU
1 stop16h 02m
JetBlue
Fri 22/520:06
SJU
-
DUB
1 stop31h 54m
JetBlue
Deal found 22/3£514
Sat 6/610:40
DUB
-
SJU
1 stop30h 22m
JetBlue
Wed 10/613:29
SJU
-
DUB
1 stop13h 51m
JetBlue
Deal found 21/3£516
Wed 27/510:40
DUB
-
SJU
1 stop16h 02m
JetBlue
Tue 2/615:25
SJU
-
DUB
1 stop11h 55m
JetBlue
Deal found 22/3£517
Mon 4/512:40
DUB
-
SJU
1 stop14h 25m
British Airways
Mon 11/511:43
SJU
-
DUB
2 stops16h 57m
British Airways
Deal found 20/3£542
Thu 26/1111:30
DUB
-
SJU
1 stop16h 17m
British Airways
Sat 5/1217:10
SJU
-
DUB
2 stops17h 50m
British Airways
Deal found 21/3£546
Fri 1/510:40
DUB
-
SJU
1 stop16h 32m
JetBlue
Sat 9/506:25
SJU
-
DUB
1 stop21h 35m
JetBlue
Deal found 19/3£552
Wed 8/412:40
DUB
-
SJU
1 stop14h 25m
British Airways
Fri 24/411:43
SJU
-
DUB
2 stops16h 57m
British Airways
Deal found 20/3£573
Mon 13/409:30
DUB
-
SJU
1 stop18h 32m
Finnair
Mon 20/406:45
SJU
-
DUB
1 stop22h 00m
Finnair
Deal found 18/3£573
Thu 16/412:40
DUB
-
SJU
1 stop14h 25m
British Airways
Tue 21/411:43
SJU
-
DUB
2 stops16h 57m
British Airways
Deal found 21/3£575

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 23 March 2026.

Round-trip from

£440

Popular in

December

Cheapest in

May

Average price

£583
JetBlue
  • JetBlue
  • 4/5-11/5
  • 2 total stops
  • 44h 22m total
  • Ireland to San Juan
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£47 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 March 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 23 March 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 - SJU

DUBSJU

Dublin

Thu 4/6

11:40-01:38

1 stop18h 58m

San Juan Luis Munoz Marin Intl

Wed 10/6

15:25-08:20

1 stop11h 55m

£514

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Sat 6/6

10:40-12:02

1 stop30h 22m

San Juan Luis Munoz Marin Intl

Wed 10/6

13:29-08:20

1 stop13h 51m

£516
Fastest return journey

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Thu 28/5

11:30-22:53

1 stop16h 23m

San Juan Luis Munoz Marin Intl

Mon 1/6

15:25-08:20

1 stop11h 55m

£517

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Thu 16/4

12:40-22:05

1 stop14h 25m

San Juan Luis Munoz Marin Intl

Tue 21/4

11:43-09:40

2 stops16h 57m

£575

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Wed 27/5

17:50-23:01

2 stops34h 11m

San Juan Luis Munoz Marin Intl

Tue 2/6

13:47-06:30

1 stop11h 43m

£588

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Thu 23/4

08:35-21:24

2 stops17h 49m

San Juan Luis Munoz Marin Intl

Thu 7/5

11:43-09:40

2 stops16h 57m

£591

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Tue 2/6

08:35-23:01

2 stops19h 26m

San Juan Luis Munoz Marin Intl

Tue 9/6

11:55-09:40

2 stops16h 45m

£591

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Wed 15/4

08:35-22:05

2 stops18h 30m

San Juan Luis Munoz Marin Intl

Tue 21/4

11:43-09:40

2 stops16h 57m

£594

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Sun 5/4

08:35-22:58

2 stops19h 23m

San Juan Luis Munoz Marin Intl

Sat 18/4

13:25-06:30

1 stop12h 05m

£602

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Thu 28/5

08:35-23:01

2 stops19h 26m

San Juan Luis Munoz Marin Intl

Mon 1/6

13:47-06:30

1 stop11h 43m

£605

Flights are sorted by cheapest return flights first.

Deals found on 18/3

Showing 1-10 of 14 resultsSorted by cheapest first
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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 £391). Flying from Ireland to San Juan in September is currently the most expensive (average of £606). 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.

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 14h 25m. Airlines will cover a distance of 3963 mi. Both multi-stop and direct flights can be found to your destination and back.

  • 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 £391). Flying from Ireland to San Juan in September is currently the most expensive (average of £606). 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

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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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