Cheap flights from Belfast to Copenhagen

Prices often shift as the year turns, so you might find lower fares in the quiet weeks leading up to the new year or shortly after the winter break ends. January stands out as the cheapest month on this route when demand settles and airlines reduce their rates. You can check availability from October through August if your plans allow flexibility outside that mid-winter window.

The route features a mix of low-cost carriers and full-service airlines, giving you options depending on whether you need seats included or just transport. Easyjet offers budget-friendly tickets that require careful attention to baggage allowances for this connecting journey. KLM Royal Dutch Airlines, British Airways and Aer Lingus provide full-service fares where meals and checked luggage are typically part of the price, often using their respective hubs to link Belfast with Copenhagen.

Before you land in Copenhagen, ensure you have your arrival details ready since Kastrup is the only international gateway serving the Danish capital. The airport sits close enough to the city centre that a train or metro ride gets you there quickly without long transfers. You should arrange transport from Kastrup in advance, as the connections are straightforward but the frequency can vary depending on the time of day and your final destination within the city.

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+01 (Europe/Copenhagen)

Country facts: Wikidata

• Verify visa requirements and passport validity for Denmark before you book your connecting flights from Belfast.
• Check if your chosen airline allows seat selection or baggage changes on the specific fare type you are viewing.
• Review the connection time at the hub airport to ensure it is long enough for international transfers.
• Confirm which terminal George Best City uses for departures to avoid confusion at security.
• Compare prices across different dates in January and the surrounding months to find the lowest available rate.