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Cheap flights from Ireland to San Juan from €399

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ireland to San Juan departing on 1/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ireland to San Juan

Recent return flight deals from Ireland to San Juan

Enter your travel dates to find the best prices.
JetBlue Logo
11:30 - 00:10
DUB
-
SJU
17h 40m
1 stop
JetBlue Logo
07:25 - 09:00
SJU
-
DUB
20h 35m
1 stop
€536JetBlue
Thu, 9 Jul - Wed, 22 Jul
JetBlue Logo
11:30 - 00:13
DUB
-
SJU
17h 43m
1 stop
JetBlue Logo
15:24 - 09:00
SJU
-
DUB
12h 36m
1 stop
€537JetBlue
Mon, 15 Jun - Sun, 28 Jun
JetBlue Logo
11:30 - 19:54
DUB
-
SJU
13h 24m
1 stop
JetBlue Logo
15:24 - 09:00
SJU
-
DUB
12h 36m
1 stop
€538JetBlue
Mon, 15 Jun - Sun, 28 Jun
JetBlue Logo
11:30 - 19:54
DUB
-
SJU
13h 24m
1 stop
JetBlue Logo
15:24 - 09:00
SJU
-
DUB
12h 36m
1 stop
€550JetBlue
Thu, 25 Jun - Thu, 2 Jul
JetBlue Logo
11:30 - 00:13
DUB
-
SJU
17h 43m
1 stop
JetBlue Logo
07:00 - 08:20
SJU
-
DUB
20h 20m
1 stop
€556JetBlue
Thu, 25 Jun - Sat, 11 Jul
JetBlue Logo
11:30 - 22:39
DUB
-
SJU
16h 09m
1 stop
JetBlue Logo
15:10 - 09:00
SJU
-
DUB
12h 50m
1 stop
€600JetBlue
Wed, 15 Jul - Mon, 3 Aug
JetBlue Logo
11:30 - 09:08
DUB
-
SJU
26h 38m
1 stop
JetBlue Logo
03:30 - 09:00
SJU
-
DUB
24h 30m
1 stop
€603JetBlue
Thu, 28 May - Sun, 31 May
JetBlue Logo
10:40 - 21:42
DUB
-
SJU
16h 02m
1 stop
JetBlue Logo
09:52 - 09:00
SJU
-
DUB
18h 08m
1 stop
€625JetBlue
Fri, 29 May - Thu, 4 Jun
Multiple Airlines Logo
05:55 - 20:30
DUB
-
SJU
19h 35m
2 stops
Multiple Airlines Logo
14:35 - 09:15
SJU
-
DUB
13h 40m
1 stop
€626Multiple Airlines
Thu, 28 May - Mon, 1 Jun
KLM Logo
11:10 - 23:43
DUB
-
SJU
17h 33m
2 stops
KLM Logo
12:54 - 08:45
SJU
-
DUB
14h 51m
1 stop
€626KLM
Mon, 15 Jun - Sun, 28 Jun

Delta flights from Ireland to San Juan

Our best Delta deals on Ireland to San Juan flight tickets
Delta
28 May
DUB10:00Dublin
17h 17m
2 stops
SJU22:17San Juan Luis Munoz Marin Intl
1 Jun
SJU07:30San Juan Luis Munoz Marin Intl
20h 45m
2 stops
DUB09:15Dublin
€699
Delta
25 Jun
DUB11:00Dublin
14h 43m
1 stop
SJU20:43San Juan Luis Munoz Marin Intl
2 Jul
SJU07:30San Juan Luis Munoz Marin Intl
21h 30m
2 stops
DUB10:00Dublin
€731
Delta
7 Sept
DUB11:00Dublin
16h 23m
1 stop
SJU22:23San Juan Luis Munoz Marin Intl
13 Sept
SJU13:32San Juan Luis Munoz Marin Intl
14h 43m
1 stop
DUB09:15Dublin
€766

KLM flights from Ireland to San Juan

Our best KLM deals on Ireland to San Juan flight tickets
KLM
15 Jun
DUB11:10Dublin
17h 33m
2 stops
SJU23:43San Juan Luis Munoz Marin Intl
28 Jun
SJU12:54San Juan Luis Munoz Marin Intl
14h 51m
1 stop
DUB08:45Dublin
€626
KLM
18 Jun
DUB11:10Dublin
17h 33m
2 stops
SJU23:43San Juan Luis Munoz Marin Intl
2 Jul
SJU14:14San Juan Luis Munoz Marin Intl
14h 46m
1 stop
DUB10:00Dublin
€693
KLM
7 Sept
DUB11:00Dublin
16h 23m
1 stop
SJU22:23San Juan Luis Munoz Marin Intl
13 Sept
SJU07:30San Juan Luis Munoz Marin Intl
20h 15m
1 stop
DUB08:45Dublin
€767

momondo 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, momondo users made 13,528 searches. Data last updated 14 May 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

Thu 9/7

11:30-00:10

1 stop17h 40m

San Juan Luis Munoz Marin Intl

Wed 22/7

07:25-09:00

1 stop20h 35m

€536

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Mon 15/6

11:30-00:13

1 stop17h 43m

San Juan Luis Munoz Marin Intl

Sun 28/6

15:24-09:00

1 stop12h 36m

€537
Fastest return journey

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Mon 15/6

11:30-19:54

1 stop13h 24m

San Juan Luis Munoz Marin Intl

Sun 28/6

15:24-09:00

1 stop12h 36m

€538

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Thu 25/6

11:30-19:54

1 stop13h 24m

San Juan Luis Munoz Marin Intl

Thu 2/7

15:24-09:00

1 stop12h 36m

€550

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Thu 25/6

11:30-00:13

1 stop17h 43m

San Juan Luis Munoz Marin Intl

Sat 11/7

07:00-08:20

1 stop20h 20m

€556

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Wed 15/7

11:30-22:39

1 stop16h 09m

San Juan Luis Munoz Marin Intl

Mon 3/8

15:10-09:00

1 stop12h 50m

€600

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Thu 28/5

11:30-09:08

1 stop26h 38m

San Juan Luis Munoz Marin Intl

Sun 31/5

03:30-09:00

1 stop24h 30m

€603

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Fri 29/5

10:40-21:42

1 stop16h 02m

San Juan Luis Munoz Marin Intl

Thu 4/6

09:52-09:00

1 stop18h 08m

€625

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Thu 28/5

05:55-20:30

2 stops19h 35m

San Juan Luis Munoz Marin Intl

Mon 1/6

14:35-09:15

1 stop13h 40m

€626

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Mon 15/6

11:10-23:43

2 stops17h 33m

San Juan Luis Munoz Marin Intl

Sun 28/6

12:54-08:45

1 stop14h 51m

€626

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Juan from

How to get the cheapest flight ticket from Ireland to San Juan

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Juan?

The cheapest month to fly to San Juan from Ireland is in May. Flight prices, which tend to average around €436, are often lower during this time because this is during the off-season. If you are unable to visit San Juan during the month of May, then departing from Ireland during the month October is also very affordable. Most momondo users find prices during this month for around €550.

Cheap Ireland to San Juan flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ireland to San Juan

Fastest flight time

13h 24m

Direct flights

None
The fastest flight from Ireland to San Juan takes 13h 24m
There are no direct flights from Ireland to San Juan. There are no popular flight routes from Ireland to San Juan.
Search flight deals

Frequently asked questions about flying from Ireland to San Juan

  • When did momondo last update prices for flights from Ireland to San Juan?

    Prices for flights from Ireland to San Juan refresh daily.

  • How many operators does momondo search for flights from Ireland to San Juan?

  • How old do you have to be to fly from Ireland to San Juan?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ireland to San Juan.

  • What documentation or ID do you need to fly to San Juan?

    The necessary travel and health documents for your San Juan trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Ireland to San Juan

Compare and see reviews for airlines that fly from Ireland to San Juan with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom €487Free CancellationRating
7.1
2,974 reviews
Search JetBlue flights
American AirlinesPriceFrom €610Free CancellationRating
7.1
11,666 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Ireland to San Juan?

Finding the right flight to San Juan from Ireland is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Juan quick and easy, saving you time and money.

Can I find flights from Ireland to San Juan with flexible booking policies on momondo?

momondo does allow users to show only those flights to San Juan from Ireland which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Ireland to San Juan?

momondo provides multiple filters to help you find the best flight to San Juan from Ireland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Ireland to San Juan right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Ireland to San Juan now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Juan and let you know when they change.

An easier way to manage your San Juan trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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Find better results for your trip to Puerto Rico

Fly into one of these airports located in San Juan

Airports listed have a maximum distance of 11.5 km from San Juan
San Juan Luis Munoz Marin Intl Airport