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Cheap flights from Ireland to San Juan from £511

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SJU
13 Jul — 20 Jul1
1 adult

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 8 July 2025.

Round-trip from

£511

Popular in

October

Cheapest in

April

Average price

£747
JetBlue
  • JetBlue
  • 12/9-16/9
  • 2 total stops
  • 28h 09m 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. 2% potential price decrease (£12 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from Ireland to San Juan

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 8 July 2025.

Fri 12/911:30DUB - SJU
1 stop14h 54mJetBlue
Tue 16/914:05SJU - DUB
1 stop13h 15mJetBlue
Deal found 7/7£511
Mon 25/808:55DUB - SJU
2 stops19h 56mDelta
Sun 7/917:46SJU - DUB
1 stop33h 59mDelta
Deal found 7/7£575
Sun 28/1214:05DUB - SJU
1 stop19h 00mMultiple Airlines
Wed 7/121:25SJU - DUB
2 stops15h 35mMultiple Airlines
Deal found 6/7£586
Wed 20/813:15DUB - SJU
1 stop28h 03mKLM
Wed 27/813:34SJU - DUB
2 stops18h 01mKLM
Deal found 6/7£659
Fri 19/1208:45DUB - SJU
2 stops19h 40mBritish Airways
Sat 27/1206:40SJU - DUB
2 stops23h 35mBritish Airways
Deal found 7/7£668
Fri 19/1213:35DUB - SJU
1 stop15h 01mLufthansa
Sat 27/1214:10SJU - DUB
1 stop15h 45mLufthansa
Deal found 7/7£759
Fri 22/811:35DUB - SJU
2 stops29h 59mUnited Airlines
Fri 29/807:00SJU - DUB
2 stops21h 45mUnited Airlines
Deal found 8/7£795
Fri 19/1208:45DUB - SJU
2 stops18h 55mAmerican Airlines
Sat 27/1206:40SJU - DUB
1 stop18h 25mAmerican Airlines
Deal found 7/7£811
Sat 27/1204:15DUB - SJU
2 stops27h 02mTAP AIR PORTUGAL
Wed 7/106:15SJU - DUB
2 stops37h 05mTAP AIR PORTUGAL
Deal found 6/7£847
Fri 19/1209:00DUB - SJU
2 stops32h 17mAir Canada
Fri 26/1202:05SJU - DUB
2 stops25h 05mAir Canada
Deal found 7/7£1,630
Sun 28/1218:50DUB - SJU
1 stop29h 05mIberia
Wed 7/118:10SJU - DUB
1 stop12h 05mIberia
Deal found 6/7£2,159
Sun 28/1210:35DUB - SJU
2 stops18h 02mAer Lingus
Tue 6/101:59SJU - DUB
1 stop22h 21mAer Lingus
Deal found 6/7£2,240

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 8 July 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 12/9

11:30-21:24

1 stop14h 54m

San Juan Luis Munoz Marin Intl

Tue 16/9

14:05-08:20

1 stop13h 15m

£511

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Mon 25/8

08:55-23:51

2 stops19h 56m

San Juan Luis Munoz Marin Intl

Sun 7/9

17:46-08:45

1 stop33h 59m

£575

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Sun 28/12

14:05-05:05

1 stop19h 00m

San Juan Luis Munoz Marin Intl

Wed 7/1

21:25-17:00

2 stops15h 35m

£586

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Wed 20/8

13:15-12:18

1 stop28h 03m

San Juan Luis Munoz Marin Intl

Wed 27/8

13:34-12:35

2 stops18h 01m

£659

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Fri 19/12

08:45-00:25

2 stops19h 40m

San Juan Luis Munoz Marin Intl

Sat 27/12

06:40-10:15

2 stops23h 35m

£668

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Fri 19/12

13:35-00:36

1 stop15h 01m

San Juan Luis Munoz Marin Intl

Sat 27/12

14:10-09:55

1 stop15h 45m

£759

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Fri 22/8

11:35-12:34

2 stops29h 59m

San Juan Luis Munoz Marin Intl

Fri 29/8

07:00-09:45

2 stops21h 45m

£795

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Fri 19/12

08:45-23:40

2 stops18h 55m

San Juan Luis Munoz Marin Intl

Sat 27/12

06:40-05:05

1 stop18h 25m

£811

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Sat 27/12

04:15-03:17

2 stops27h 02m

San Juan Luis Munoz Marin Intl

Wed 7/1

06:15-23:20

2 stops37h 05m

£847

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Fri 19/12

09:00-13:17

2 stops32h 17m

San Juan Luis Munoz Marin Intl

Fri 26/12

02:05-07:10

2 stops25h 05m

£1,630

Flights are sorted by cheapest return flights first.

Deals found on 6/7

Showing 1-10 of 13 results
1
2

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 £631). Flying from Ireland to San Juan in July is currently the most expensive (average of £1,027). 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.

Reviews of airlines servicing San Juan

Get insights into the airlines that provide service to San Juan. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Juan. Reviews last updated 8 July 2025.
Get a feel of what it's like to fly with Delta, KLM, andUnited Airlines from Ireland to San Juan by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,962 reviews
Check prices

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Rona,Feb 2024

MSP - DEN

It was a good experience other than a short delay.
Delta
8.0
Very Good
7,962 reviews
Delta
8.0
Very Good
7,962 reviews
Check prices

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Rona,Feb 2024

MSP - DEN

It was a good experience other than a short delay.
KLM
7.8
Good
1,370 reviews
Delta
8.0
Very Good
7,962 reviews
Check prices

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Rona,Feb 2024

MSP - DEN

It was a good experience other than a short delay.
United Airlines
7.4
Good
8,844 reviews
Delta
8.0
Very Good
7,962 reviews
Check prices

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Rona,Feb 2024

MSP - DEN

It was a good experience other than a short delay.
JetBlue
7.3
Good
2,910 reviews
Delta
8.0
Very Good
7,962 reviews
Check prices

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Rona,Feb 2024

MSP - DEN

It was a good experience other than a short delay.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very Good
7,962 reviews
Check prices

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Rona,Feb 2024

MSP - DEN

It was a good experience other than a short delay.

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, April is the cheapest month in which you can book a flight from Ireland to San Juan (average of £631). Flying from Ireland to San Juan in July is currently the most expensive (average of £1,027). 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.

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Why should you use Cheapflights to find cheap flight tickets from Ireland to San Juan?

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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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