Finding cheap flights to Denmark is often easier when you compare the whole journey rather than focusing on one airport or departure date. Copenhagen may offer the widest choice of flights from the UK, but fares can reflect strong demand from city-break and business travellers. Billund and Aalborg can be useful alternatives depending on where you are heading, while Aarhus, Karup and Sonderborg may suit travellers whose final destination is nearby, even if the flight options are more limited.

Flexibility can make a noticeable difference, particularly around school holidays, public holidays and popular event periods in Denmark. Searching several departure dates and comparing both direct and connecting itineraries can reveal a better overall fare, although a longer journey is only worthwhile if the saving remains after adding meals, luggage and airport transfers. Travelling at less busy times may also help, but availability and demand vary by route.

The UK airport you choose matters too. Alongside London airports, compare options from regional departure points such as Manchester, Birmingham or Edinburgh when practical, taking rail fares, parking and overnight accommodation into account. A slightly cheaper ticket can cost more overall if reaching the airport is difficult. It is also worth checking whether flying to Copenhagen or Billund leaves you with a simpler and cheaper onward journey than choosing an airport closer to your final stop.

When comparing flights to Denmark from the UK, the best option often depends as much on your final destination as on the departure airport. Check airports within reasonable reach of home, including those serving London, Manchester, Birmingham, Edinburgh or other UK regions, then compare the complete journey rather than focusing only on the first flight segment. A connecting itinerary may open up more arrival choices, but can add transfer time and complexity.

Copenhagen is the most practical arrival area for travellers heading to the capital and nearby eastern Denmark, while Billund can be a useful gateway for central Jutland. Aalborg suits plans in northern Jutland, and Aarhus may reduce the onward journey when that is your main destination. For Sonderborg or Karup, compare the flight itinerary with the final road or rail transfer carefully, as a nearby regional arrival is not automatically the quickest overall option.

Before booking, check which airport each fare uses, whether a change of flight is required, and how much time is needed after landing to reach your accommodation. Compare baggage rules, connection arrangements and the cost of onward transport alongside the headline fare. An itinerary arriving closer to your chosen Danish destination may offer better value and a simpler journey, even if its flight price is not the lowest.