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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 26/3. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SJU
7 Dec — 14 Dec1
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 7 November 2025.

Thu 13/1108:45DUB - SJU
2 stops19h 11mMultiple Airlines
Thu 27/1114:10SJU - DUB
1 stop14h 35mMultiple Airlines
Deal found 5/11£524
Thu 13/1110:45DUB - SJU
1 stop17h 11mDelta
Thu 27/1114:10SJU - DUB
1 stop14h 35mDelta
Deal found 5/11£527
Thu 13/1113:00DUB - SJU
1 stop14h 52mBritish Airways
Fri 28/1118:42SJU - DUB
2 stops16h 23mBritish Airways
Deal found 6/11£531
Wed 19/1111:30DUB - SJU
2 stops26h 40mMultiple Airlines
Wed 26/1117:09SJU - DUB
1 stop11h 31mMultiple Airlines
Deal found 6/11£544
Mon 22/1211:30DUB - SJU
1 stop16h 29mMultiple Airlines
Sun 18/106:30SJU - DUB
1 stop22h 10mMultiple Airlines
Deal found 6/11£551
Sat 22/1110:45DUB - SJU
1 stop17h 11mDelta
Wed 26/1118:35SJU - DUB
1 stop34h 10mDelta
Deal found 6/11£561
Wed 19/1108:50DUB - SJU
2 stops19h 02mBritish Airways
Sat 22/1106:25SJU - DUB
1 stop22h 15mBritish Airways
Deal found 6/11£662
Wed 19/1109:00DUB - SJU
2 stops19h 36mUnited Airlines
Tue 25/1102:05SJU - DUB
2 stops26h 05mUnited Airlines
Deal found 6/11£671
Sat 13/1212:05DUB - SJU
1 stop29h 12mUnited Airlines
Sat 20/1216:52SJU - DUB
1 stop35h 18mUnited Airlines
Deal found 5/11£697

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 7 November 2025.

Round-trip from

£544

One-way from

£450

Popular in

September

Cheapest in

May

Average price

£616
19/11-26/11
  • 19/11-26/11
  • 3 total stops
  • 38h 11m total
  • Ireland to San Juan
Search Deals
26/3
  • 26/3
  • 2 total stops
  • 27h 25m total
  • Ireland to San Juan
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£84 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 7 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

Sat 22/11

11:30-23:52

1 stop16h 22m

San Juan Luis Munoz Marin Intl

Wed 26/11

06:25-08:40

1 stop22h 15m

£544

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Wed 19/11

11:30-10:10

2 stops26h 40m

San Juan Luis Munoz Marin Intl

Wed 26/11

17:09-08:40

1 stop11h 31m

£544

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Sat 14/2

11:30-10:07

2 stops26h 37m

San Juan Luis Munoz Marin Intl

Sun 22/2

12:45-08:40

2 stops15h 55m

£545

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Fri 23/1

08:45-23:59

2 stops19h 14m

San Juan Luis Munoz Marin Intl

Sun 25/1

07:00-08:40

1 stop21h 40m

£545

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Fri 30/1

11:30-23:56

1 stop16h 26m

San Juan Luis Munoz Marin Intl

Sun 8/2

14:28-08:40

1 stop14h 12m

£551

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Sat 31/1

11:30-23:56

1 stop16h 26m

San Juan Luis Munoz Marin Intl

Sun 8/2

17:10-08:40

1 stop11h 30m

£551

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Fri 23/1

11:30-23:56

1 stop16h 26m

San Juan Luis Munoz Marin Intl

Sun 25/1

14:28-08:40

1 stop14h 12m

£553

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Mon 22/12

11:30-09:35

2 stops26h 05m

San Juan Luis Munoz Marin Intl

Sun 18/1

17:10-08:40

1 stop11h 30m

£554

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Thu 26/3

11:30-10:55

2 stops27h 25m

£450

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Sun 22/3

11:30-22:25

1 stop14h 55m

£454

Flights are sorted by cheapest return flights first.

Deals found on 5/11

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, January is the cheapest month in which you can book a flight from Ireland to San Juan (average of £425). Flying from Ireland to San Juan in September is currently the most expensive (average of £825). 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 £425). Flying from Ireland to San Juan in September is currently the most expensive (average of £825). 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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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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