Cheap Flights from Dublin to San Juan

November is the month where fares tend to sit lowest, a quiet stretch between the autumn holidays and the Caribbean winter rush. From December onward San Juan fills with sun seekers, so prices climb and stay firm through spring. The price calendar here runs from September to June, then picks up again in August, with July missing from the data. Midweek departures usually undercut Fridays and Sundays, and shoulder months generally cost less than the winter peak. Around Christmas and New Year, demand from Ireland and the Caribbean peaks, so book early.

The fare you buy decides more than the logo on the tail. Iberia Express and JetBlue keep base fares lean, with checked bags, seat picks and meals surfacing as paid extras, while Iberia, American Airlines, United Airlines, TAP Portugal, Aer Lingus, Turkish Airlines and Icelandair typically fold baggage and catering into the ticket. Nothing on this route flies nonstop, so every booking is a connection, and the same carrier's basic economy version may strip out what its standard fare includes. Stopover cities range from Madrid, Lisbon, Istanbul and Reykjavik to the US gateways, so the length of the travel day should weigh as heavily as the price.

Luis Munoz Marin International is Puerto Rico's principal airport and a large operation by Caribbean standards, which usually means long walks, immigration queues and a busy kerb at peak arrival waves. Most itineraries from Dublin clear United States entry formalities at the connecting hub, so the final hop to San Juan runs like a domestic flight. The airport sits a short drive from central San Juan; taxis and pre-booked transfers wait outside arrivals, and rental desks operate at the terminal. On the way back, confirm which terminal your return leg uses and allow extra time, since departing waves bunch up early.

Currency

USD ($)

Power sockets

Type A, B · 120 V

Language

English, Spanish

Emergency number

911

Driving side

right

Calling code

+1939

Internet domain

.pr

Population of San Juan

342 k (2020)

Time zone

UTC-04 (America/Puerto_Rico)

Country facts: Wikidata

• Check the entry requirements for Puerto Rico before booking; as a United States territory it follows mainland US entry rules.
• No airline flies this pair nonstop, so pick your stopover city first and check the layover suits your travel day.
• On separate tickets a missed connection is yours to fix, so leave a wide buffer between the two flights.
• Budget fares on Iberia Express or JetBlue often exclude bags, so price the checked bag before comparing headline fares.
• November usually shows the lowest fares, the winter high season the highest, so scan the calendar before locking dates.
• Book early for Christmas and New Year departures, when demand from both ends of the route peaks.