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Cheap flights from Dublin to San Juan from £349

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 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SJU
20 Mar — 27 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Dublin to San Juan

Enter your travel dates to find the best prices.

Cheapest flights from Dublin to San Juan
Explore the most affordable flight options available from Dublin to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 February 2026.

Mon 6/409:30
DUB
-
SJU
1 stop18h 01m
Finnair
Sun 19/406:45
SJU
-
DUB
1 stop22h 00m
Finnair
Deal found 18/2£430
Sat 9/511:40
DUB
-
SJU
1 stop14h 21m
JetBlue
Sun 17/523:25
SJU
-
DUB
1 stop27h 55m
JetBlue
Deal found 16/2£436
Tue 5/509:30
DUB
-
SJU
1 stop18h 32m
Finnair
Mon 11/506:45
SJU
-
DUB
1 stop22h 00m
Finnair
Deal found 16/2£438
Fri 6/309:45
DUB
-
SJU
1 stop15h 27m
Delta
Tue 10/307:30
SJU
-
DUB
2 stops21h 15m
Delta
Deal found 18/2£488
Tue 31/309:30
DUB
-
SJU
1 stop18h 01m
Finnair
Mon 6/406:33
SJU
-
DUB
1 stop22h 12m
Finnair
Deal found 15/2£488
Mon 23/209:45
DUB
-
SJU
1 stop18h 13m
Delta
Sun 8/307:30
SJU
-
DUB
1 stop20h 15m
Delta
Deal found 16/2£489
Fri 6/1108:50
DUB
-
SJU
2 stops20h 06m
KLM
Sat 14/1118:35
SJU
-
DUB
1 stop33h 10m
KLM
Deal found 17/2£490
Sat 14/317:55
DUB
-
SJU
2 stops33h 03m
British Airways
Mon 23/313:30
SJU
-
DUB
1 stop15h 10m
British Airways
Deal found 15/2£521
Sun 6/908:55
DUB
-
SJU
2 stops20h 04m
KLM
Sun 13/913:30
SJU
-
DUB
1 stop16h 15m
KLM
Deal found 14/2£526
Sat 9/511:10
DUB
-
SJU
2 stops17h 33m
KLM
Sun 17/513:30
SJU
-
DUB
1 stop16h 15m
KLM
Deal found 16/2£527

Find flight deals from Dublin to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Dublin (DUB) to San Juan (PR1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 18 February 2026.

Round-trip from

£431

One-way from

£349

Popular in

December

Cheapest in

June

Average price

£622
Finnair
  • Finnair
  • 6/4-19/4
  • 2 total stops
  • 40h 01m total
  • Dublin to San Juan
Search Deals
JetBlue
  • JetBlue
  • 6/5
  • 1 total stop
  • 14h 21m total
  • Dublin to San Juan
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£42 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 February 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Dublin 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 18 February 2026.
Use the filters below to find and compare flights from Dublin to San Juan that are best for you.

Fly from

Dublin

Fly to

San Juan

Route

Depart

Return

Price

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Mon 6/4

09:30-22:31

1 stop18h 01m

San Juan Luis Munoz Marin Intl

Sun 19/4

06:45-09:45

1 stop22h 00m

£430

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Fri 6/3

09:45-21:12

1 stop15h 27m

San Juan Luis Munoz Marin Intl

Tue 10/3

07:30-08:45

2 stops21h 15m

£488

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Tue 31/3

09:30-22:31

1 stop18h 01m

San Juan Luis Munoz Marin Intl

Mon 6/4

06:33-09:45

1 stop22h 12m

£488

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Wed 8/4

10:00-23:15

2 stops18h 15m

San Juan Luis Munoz Marin Intl

Fri 24/4

07:15-09:15

1 stop21h 00m

£528

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Wed 1/4

11:00-20:18

1 stop14h 18m

San Juan Luis Munoz Marin Intl

Mon 6/4

13:14-12:40

2 stops18h 26m

£541

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Sun 15/3

05:55-23:15

2 stops21h 20m

San Juan Luis Munoz Marin Intl

Mon 23/3

13:14-15:45

2 stops22h 31m

£571

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Sun 15/3

05:55-23:15

2 stops21h 20m

San Juan Luis Munoz Marin Intl

Sat 21/3

17:30-07:45

1 stop34h 15m

£573

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Sun 15/3

05:55-23:59

2 stops22h 04m

San Juan Luis Munoz Marin Intl

Tue 24/3

06:15-08:45

2 stops22h 30m

£573

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Sun 15/3

05:55-23:15

2 stops21h 20m

San Juan Luis Munoz Marin Intl

Fri 20/3

13:00-08:45

2 stops39h 45m

£573

DublinSan Juan

DUB - SJU

DUBSJU

Dublin

Wed 6/5

11:40-21:01

1 stop14h 21m

£349

Flights are sorted by cheapest return flights first.

Deals found on 18/2

Showing 1-10 of 12 results
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Best time to book a flight from Dublin to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from Dublin 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 Dublin to San Juan

What is the cheapest month to book a flight from Dublin to San Juan?

Currently, May is the cheapest month in which you can book a flight from Dublin to San Juan (average of £429). Flying from Dublin to San Juan in September is currently the most expensive (average of £596). 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 Dublin to San Juan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Dublin to San Juan?

    If you book a flight to San Juan from Dublin, you will be flying from Dublin, which is the city’s only airport. Dublin (DUB) is located 5.7 mi from the center of Dublin. There are 0 flights from Dublin to San Juan per day from 0 different airlines.

  • How long is the flight from Dublin to San Juan?

    Departing from Dublin to San Juan will take you 15h 27m. Dublin and San Juan are separated by a distance of 3963 mi. Both multi-stop and direct flights can be found to your destination and back.

  • Can I find deals for flights from Dublin to San Juan that include hotel bookings?

    Yes. In addition to deals on Dublin to San Juan flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Dublin to San Juan?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dublin to San Juan.

  • Can I find deals for business class flights from Dublin to San Juan?

    Yes. Cheapflights offers flight deals from Dublin 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 Dublin to San Juan?

    Currently, May is the cheapest month in which you can book a flight from Dublin to San Juan (average of £429). Flying from Dublin to San Juan in September is currently the most expensive (average of £596). 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

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Alternative routes for Dublin to San Juan

See prices for flight routes from nearby airports that may be better suited for you.
Dublin to Luis Munoz Marin Intl flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Dublin to San Juan?

Cheapflights makes it easy to find Dublin to San Juan flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Dublin to San Juan.

Can Cheapflights find flights from Dublin to San Juan with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Dublin to San Juan flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Dublin to San Juan become cheaper?

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