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Cheap flights from Ireland to San Juan from £450

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 20/3. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SJU
27 Dec — 3 Jan1
1 adult
1 adult, Economy, 0 bags

Find 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 27 November 2025.

Sat 6/1211:30DUB - SJU
1 stop16h 22mMultiple Airlines
Wed 10/1216:50SJU - DUB
1 stop11h 50mMultiple Airlines
Deal found 25/11£547
Mon 22/1212:55DUB - SJU
1 stop20h 39mMultiple Airlines
Sun 18/106:30SJU - DUB
1 stop22h 10mMultiple Airlines
Deal found 25/11£620
Fri 5/1204:25DUB - SJU
2 stops26h 52mTAP AIR PORTUGAL
Wed 10/1207:10SJU - DUB
2 stops36h 10mTAP AIR PORTUGAL
Deal found 25/11£951
Sat 20/1220:40DUB - SJU
2 stops30h 59mBritish Airways
Fri 16/117:51SJU - DUB
2 stops16h 29mBritish Airways
Deal found 25/11£970
Sat 20/1210:45DUB - SJU
1 stop19h 42mKLM
Fri 16/114:15SJU - DUB
1 stop14h 30mKLM
Deal found 25/11£1,016

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 27 November 2025.

Round-trip from

£484

One-way from

£450

Popular in

September

Cheapest in

May

Average price

£611
American Airlines
  • American Airlines
  • 25/3-7/4
  • 4 total stops
  • 42h 15m total
  • Ireland to San Juan
Search Deals
20/3
  • 20/3
  • 1 total stop
  • 15h 10m 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. 3% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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 27 November 2025.
Use the filters below to find and compare flights from Ireland to San Juan that are best for you.

Fly from

Ireland

Fly to

San Juan

Route

Depart

Return

Price

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Thu 26/3

08:50-22:40

2 stops17h 50m

San Juan Luis Munoz Marin Intl

Sat 4/4

18:01-16:40

2 stops17h 39m

£484

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Thu 26/3

08:50-22:40

2 stops17h 50m

San Juan Luis Munoz Marin Intl

Thu 9/4

05:40-06:30

1 stop19h 50m

£497

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Thu 2/4

09:30-22:40

1 stop18h 10m

San Juan Luis Munoz Marin Intl

Sat 11/4

11:45-09:55

1 stop17h 10m

£500

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Wed 8/4

12:40-10:35

1 stop26h 55m

San Juan Luis Munoz Marin Intl

Fri 24/4

06:59-09:45

1 stop21h 46m

£501

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Fri 27/3

11:30-09:00

2 stops25h 30m

San Juan Luis Munoz Marin Intl

Mon 6/4

13:44-09:55

1 stop15h 11m

£568

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Fri 27/3

11:30-12:18

1 stop28h 48m

San Juan Luis Munoz Marin Intl

Wed 8/4

06:15-08:45

1 stop21h 30m

£586

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Fri 27/3

11:30-12:18

1 stop28h 48m

San Juan Luis Munoz Marin Intl

Mon 6/4

07:00-16:40

2 stops28h 40m

£587

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Sat 28/3

06:40-23:52

2 stops21h 12m

San Juan Luis Munoz Marin Intl

Mon 6/4

15:36-15:45

2 stops19h 09m

£602

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Fri 20/3

11:30-22:40

1 stop15h 10m

£450

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Fri 20/3

10:00-22:40

2 stops16h 40m

£450

Flights are sorted by cheapest return flights first.

Deals found on 25/11

Showing 1-10 of 12 results
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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, April is the cheapest month in which you can book a flight from Ireland to San Juan (average of £426). Flying from Ireland to San Juan in September is currently the most expensive (average of £818). 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 17h 50m. 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, April is the cheapest month in which you can book a flight from Ireland to San Juan (average of £426). Flying from Ireland to San Juan in September is currently the most expensive (average of £818). 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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