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Cheap flights from Ireland to San Juan from £264

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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SJU
11 May — 18 May1
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 11 April 2026.

Mon 4/510:40
DUB
-
SJU
1 stop20h 59m
JetBlue
Mon 11/505:01
SJU
-
DUB
1 stop22h 19m
JetBlue
Deal found 6/4£437
Wed 20/511:30
DUB
-
SJU
1 stop14h 34m
JetBlue
Wed 3/606:30
SJU
-
DUB
1 stop21h 30m
JetBlue
Deal found 10/4£443
Tue 5/511:30
DUB
-
SJU
1 stop14h 30m
JetBlue
Tue 12/514:35
SJU
-
DUB
1 stop13h 25m
JetBlue
Deal found 7/4£466
Wed 23/911:30
DUB
-
SJU
1 stop16h 12m
JetBlue
Sun 27/910:30
SJU
-
DUB
1 stop17h 30m
JetBlue
Deal found 6/4£512
Mon 4/512:40
DUB
-
SJU
1 stop14h 25m
British Airways
Mon 11/511:43
SJU
-
DUB
2 stops16h 57m
British Airways
Deal found 6/4£536
Sat 23/511:30
DUB
-
SJU
1 stop16h 23m
JetBlue
Tue 26/513:27
SJU
-
DUB
1 stop13h 53m
JetBlue
Deal found 8/4£562
Wed 6/512:40
DUB
-
SJU
1 stop14h 25m
British Airways
Thu 14/511:43
SJU
-
DUB
2 stops16h 57m
British Airways
Deal found 9/4£576
Thu 21/509:50
DUB
-
SJU
1 stop14h 15m
Multiple Airlines
Thu 4/611:55
SJU
-
DUB
2 stops16h 45m
Multiple Airlines
Deal found 10/4£577
Wed 20/508:35
DUB
-
SJU
2 stops18h 30m
British Airways
Wed 3/613:47
SJU
-
DUB
1 stop11h 43m
British Airways
Deal found 10/4£588
Thu 30/407:00
DUB
-
SJU
2 stops19h 24m
British Airways
Thu 14/511:43
SJU
-
DUB
2 stops16h 57m
British Airways
Deal found 6/4£594

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 11 April 2026.

Round-trip from

£437

One-way from

£264

Popular in

July

Cheapest in

June

Average price

£567
JetBlue
  • JetBlue
  • 4/5-11/5
  • 2 total stops
  • 43h 18m total
  • Ireland to San Juan
Search Deals
JetBlue
  • JetBlue
  • 11/5
  • 1 total stop
  • 17h 40m total
  • Ireland to San Juan
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£15 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 11 April 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

Mon 4/5

10:40-02:39

1 stop20h 59m

San Juan Luis Munoz Marin Intl

Mon 11/5

05:01-08:20

1 stop22h 19m

£437

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Wed 23/9

10:40-23:58

1 stop18h 18m

San Juan Luis Munoz Marin Intl

Sun 27/9

10:30-09:00

1 stop17h 30m

£513

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Mon 4/5

06:30-21:24

2 stops19h 54m

San Juan Luis Munoz Marin Intl

Mon 11/5

11:43-09:40

2 stops16h 57m

£583

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Wed 20/5

08:35-22:05

2 stops18h 30m

San Juan Luis Munoz Marin Intl

Wed 3/6

13:47-12:05

2 stops17h 18m

£594

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Thu 30/4

07:00-21:24

2 stops19h 24m

San Juan Luis Munoz Marin Intl

Thu 14/5

11:43-09:40

2 stops16h 57m

£594

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Wed 6/5

08:40-22:05

2 stops18h 25m

San Juan Luis Munoz Marin Intl

Thu 14/5

11:43-09:40

2 stops16h 57m

£625

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Sat 19/9

11:10-23:44

2 stops17h 34m

San Juan Luis Munoz Marin Intl

Sat 3/10

07:00-09:15

1 stop21h 15m

£657

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Wed 20/5

09:15-23:35

2 stops19h 20m

San Juan Luis Munoz Marin Intl

Wed 3/6

13:16-09:15

1 stop14h 59m

£662
Fastest return journey

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Wed 20/5

10:00-22:17

2 stops17h 17m

San Juan Luis Munoz Marin Intl

Wed 3/6

13:14-10:00

2 stops15h 46m

£664

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Sat 2/5

10:00-23:13

2 stops18h 13m

San Juan Luis Munoz Marin Intl

Fri 15/5

06:15-09:15

2 stops22h 00m

£665

Flights are sorted by cheapest return flights first.

Deals found on 7/4

Showing 1-10 of 16 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 £393). Flying from Ireland to San Juan in January is currently the most expensive (average of £578). 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 19h 54m. 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 £393). Flying from Ireland to San Juan in January is currently the most expensive (average of £578). 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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