Cheap flights from Dublin to Copenhagen

Copenhagen trades on light: summer days run long and the city moves outdoors, which is when demand — and fares — climb with it. November works the other way: cold, dark, thin on crowds, and it is where this route tends to bottom out, with the lowest fares of the year clustered there. Winter holds fairly steady outside the holidays, though the run-up to Christmas lifts prices as the markets open and families start flying; spring weekends fill up quickly too. Midweek departures usually sit below Friday and Sunday traffic; a July or August trip rewards early booking, while in the quieter stretch you can often afford to leave it late.

Ryanair is the anchor on this route: nonstop, no-frills and usually among the lower fares, with the trade-off that anything beyond a small cabin bag costs extra. Norwegian International plays the low-cost game much the same way, while Scandinavian Airlines and Aer Lingus fly the route direct as full-service carriers, with a checked bag and something to eat folded into the fare. Emerald Airlines completes the Irish side of the list, and the rest connect somewhere: KLM Royal Dutch Airlines through Amsterdam, British Airways through London, Finnair through Helsinki. Hahn Air Technologies and Mokulele Flight Service round out the mix as niche names rather than likely operators.

Getting in is the painless part of this trip. Both the metro and mainline trains leave from inside the terminal at Kastrup, so the transfer feels barely longer than the walk out of arrivals — a short, easy ride into a compact centre, with the airport close enough that a taxi is a comfort rather than a necessity.

Two things to watch: Ireland sits outside Schengen and Denmark inside it, so expect a passport check rather than a walk-through on arrival. If you land late, check how often the night connections into town keep running.

Currency

DKK (kr.)

Power sockets

Type C, E, F, K · 230 V

Language

Danish

Emergency number

112

Driving side

right

Calling code

+45

Internet domain

.dk

EU / Schengen

EU member, Schengen area

Population of Copenhagen

667 k (2025)

Time zone

UTC+02 (Europe/Copenhagen)

Country facts: Wikidata

• Dublin has a single airport, so there is no departure-airport choice to get wrong — just confirm which terminal your airline checks in from.
• A Ryanair or Norwegian International fare usually covers a small cabin bag only, so price a checked bag before you measure it against SAS or Aer Lingus.
• Denmark sits inside Schengen and Ireland does not, so bring a passport and expect a border check when you land at Kastrup.
• If your KLM, British Airways or Finnair trip is sold as separate tickets, the connection and the re-checked bag are yours to manage.
• December and midsummer weekends sell through early on this route, so book those further ahead than a quiet November dash.