Cheap flights from Dublin to Porto

Porto runs on Atlantic weather. Summers are dry and bright, with daylight stretching late into the evening, while winters stay gentle and the rain gathers between autumn and spring. A light waterproof covers you in any month, and even a January afternoon on the riverside feels mild.

December stands out: fares on this route sit lowest then, once the beach crowd is gone and the Christmas lights are up. Travel inside the holiday peak itself and the calendar turns expensive again; late spring and early autumn act as shoulder seasons, midweek departures usually undercut Fridays and Sundays, and the São João festival in June pulls prices up, so book that week early.

Check what the fare covers before the airline's name: low-cost tickets quote the seat and a small under-seat bag, while cabin cases, checked luggage, seat selection and priority boarding show up as paid extras at checkout. Full-service fares usually fold a proper cabin bag and a checked allowance into the price.

Ryanair and Aer Lingus fly it without a change, one low-cost, one full-service. The rest — Transavia France, Vueling, Air France, KLM, Luxair, Norwegian International, Portugália and Emerald Airlines — typically work as connections through their hubs, so judge them on the all-in price and the total time spent travelling.

Sort the way into town before you land: Porto's single airport sits well out to the northwest of the centre, with a metro line running from the terminal towards downtown and buses and taxis covering the rest. Buy your ticket from a machine or the counter inside arrivals, and keep a contactless card within reach.

Watch the clock on evening flights, because if you land once the metro has wound down, a taxi is the realistic way in — check the timetable against your arrival rather than hoping. And once in town, remember the historic core climbs hills over cobbles, which is easy on foot and slow with a suitcase.

Currency

EUR (€)

Power sockets

Type C, F · 230 V

Language

Portuguese

Emergency number

112

Driving side

right

Calling code

+351

Internet domain

.pt

EU / Schengen

EU member, Schengen area

Population of Porto

273 k (2025)

Time zone

UTC+01 (Europe/Lisbon)

Country facts: Wikidata

• Add the extras up before you compare fares, because low-cost tickets on this route quote the seat and bill the cabin bag, checked luggage and seat selection separately.
• There is one airport at each end, but Dublin works from two terminals, so check which one your airline departs from before travel day.
• Run the price calendar across the full year it covers, because fares move with the season and December sits lowest.
• If an itinerary includes a change on a separately ticketed flight, leave a generous gap and expect to collect and re-check your own bags.
• Portugal is in the EU, so an Irish passport is all you need — just check it is in date for everyone on the booking.