Find flights
When to book

Cheap flights from Ireland to San Juan from £447

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 19/3. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SJU
14 Nov — 21 Nov1
1 adult
1 adult, Economy

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 15 October 2025.

Fri 31/1012:55DUB - SJU
1 stop29h 30mMultiple Airlines
Fri 14/1116:43SJU - DUB
1 stop11h 57mMultiple Airlines
Deal found 14/10£496
Mon 22/1212:55DUB - SJU
2 stops24h 40mMultiple Airlines
Sun 18/113:58SJU - DUB
2 stops14h 42mMultiple Airlines
Deal found 12/10£497
Fri 31/1012:55DUB - SJU
1 stop29h 30mMultiple Airlines
Thu 13/1107:15SJU - DUB
1 stop19h 55mMultiple Airlines
Deal found 13/10£497
Mon 3/1105:55DUB - SJU
2 stops23h 01mDelta
Sun 16/1107:15SJU - DUB
2 stops20h 35mDelta
Deal found 14/10£530
Sat 27/1212:55DUB - SJU
2 stops24h 40mMultiple Airlines
Sat 10/113:58SJU - DUB
2 stops14h 42mMultiple Airlines
Deal found 13/10£533
Fri 28/1110:45DUB - SJU
1 stop17h 11mDelta
Fri 5/1207:00SJU - DUB
2 stops21h 45mDelta
Deal found 14/10£550
Fri 26/1210:45DUB - SJU
1 stop17h 14mDelta
Tue 13/107:00SJU - DUB
2 stops20h 50mDelta
Deal found 13/10£582
Fri 28/1108:50DUB - SJU
2 stops19h 06mKLM
Fri 5/1214:20SJU - DUB
2 stops18h 20mKLM
Deal found 14/10£591
Fri 26/1207:35DUB - SJU
2 stops19h 59mBritish Airways
Tue 13/111:38SJU - DUB
2 stops17h 57mBritish Airways
Deal found 13/10£602
Wed 24/1209:45DUB - SJU
2 stops20h 42mDelta
Sun 11/107:00SJU - DUB
2 stops20h 50mDelta
Deal found 13/10£610
Wed 24/1209:45DUB - SJU
2 stops20h 42mDelta
Tue 13/107:00SJU - DUB
2 stops20h 50mDelta
Deal found 13/10£611

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 15 October 2025.

Round-trip from

£496

One-way from

£447

Popular in

September

Cheapest in

May

Average price

£742
31/10-14/11
  • 31/10-14/11
  • 2 total stops
  • 41h 27m total
  • Ireland to San Juan
Search Deals
19/3
  • 19/3
  • 2 total stops
  • 27h 10m total
  • Ireland to San Juan
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£81 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 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 15 October 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

Fri 31/10

12:55-14:25

1 stop29h 30m

San Juan Luis Munoz Marin Intl

Fri 14/11

16:43-08:40

1 stop11h 57m

£496

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Mon 3/11

12:55-10:17

2 stops25h 22m

San Juan Luis Munoz Marin Intl

Sun 16/11

12:55-08:40

2 stops15h 45m

£496

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Mon 22/12

12:55-15:13

1 stop30h 18m

San Juan Luis Munoz Marin Intl

Sun 18/1

14:28-08:40

1 stop14h 12m

£497

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Fri 6/2

11:30-23:56

1 stop16h 26m

San Juan Luis Munoz Marin Intl

Sun 15/2

14:40-08:40

1 stop14h 00m

£497

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Thu 22/1

11:30-23:59

2 stops16h 29m

San Juan Luis Munoz Marin Intl

Sun 1/2

07:00-08:40

1 stop21h 40m

£497

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Thu 19/3

11:30-10:40

2 stops27h 10m

£447

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Sun 22/2

04:25-01:51

2 stops25h 26m

£568

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Fri 20/2

04:25-01:51

2 stops25h 26m

£690

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Mon 23/2

16:30-22:32

3 stops34h 02m

£763

Flights are sorted by cheapest return flights first.

Deals found on 13/10

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, January is the cheapest month in which you can book a flight from Ireland to San Juan (average of £418). Flying from Ireland to San Juan in September is currently the most expensive (average of £811). 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.

  • 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, January is the cheapest month in which you can book a flight from Ireland to San Juan (average of £418). Flying from Ireland to San Juan in September is currently the most expensive (average of £811). 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.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.