Carmen
Travel editor at Reisedrop · 2026-10-02
When you search for Copenhagen or Billund flights, the cheapest option is rarely about the ticket alone. The lowest-cost holiday usually comes from adding up the full trip: transport to the airport, baggage, travel time, possible overnight stay before an early departure, and how many departures you can actually choose from. For many travellers in Denmark, Copenhagen offers the widest choice, while Billund is often stronger on easy access from Jutland and fewer extra costs before departure. So the right airport depends on your destination, the season, and where in Denmark you are starting.
Copenhagen usually offers the widest choice
CPH generally has the most direct routes and the highest number of daily departures, especially to Spain, Italy, Greece and larger cities in Germany. That wider choice can push fares down on popular routes because more airlines compete for the same travellers. It also gives you more flexibility if you want to travel during school holidays or over a long weekend. The downside is that the lowest fare from Copenhagen does not always become the lowest total holiday cost if you still need to travel far to reach the airport or pay for parking and transfers.
Billund can win on total trip cost
BLL has fewer routes than CPH, but for travellers from Jutland and parts of Funen, Billund can be the cheapest option overall. A shorter trip to the airport often means lower costs for rail, bridge tolls, fuel or a hotel before departure. It can also save time and make travel easier with children. On classic sun routes, the difference in airfare between Copenhagen and Billund may be smaller than many expect, while the surrounding travel costs can be the factor that decides which airport is actually cheaper in the end.
For beach holidays, route choice matters most
Travellers in Denmark often choose beach holidays, and here frequency matters. For major summer destinations in Spain, Copenhagen will often have more departures and a better chance of workable combinations in the most in-demand weeks. Billund can still be strong on selected Mediterranean routes, especially if you are flexible on trip length and day of departure. For smaller islands or destinations with fewer direct links, Copenhagen is more often the easier fit. If either airport requires a connection, total journey time can quickly cancel out a small difference in airfare.
When is Copenhagen usually the cheaper choice?
Copenhagen is often most competitive when you are flying to large, popular destinations with several airlines on the same route. That is especially true for city breaks, year-round routes and summer destinations with high demand. If you can travel outside the busiest holiday weeks, the large CPH route network gives you a better chance of lower fares and more practical departure times. Copenhagen is also a strong choice if you value direct flights over a slightly cheaper ticket that comes with extra ground transport or longer journey time. For travellers from Zealand, the calculation often favours Copenhagen.
When is Billund usually the cheaper choice?
Billund is often the better option when the alternative via Copenhagen requires expensive or time-consuming onward travel. If you live in Jutland, the saving may sit outside the airfare itself: less transport, fewer days of parking, and less risk of needing to leave home the evening before. Billund makes particular sense for family holidays, where every extra cost multiplies across several people. On selected leisure-heavy sun routes and classic holiday destinations, BLL can therefore beat CPH on total cost even though Copenhagen has more departures. This is especially relevant if you are fixed on specific travel days and want to avoid detours.
How to choose between Copenhagen and Billund
Choose Copenhagen if you want the widest choice, the most direct routes and the best chance of finding a strong option to Spain, Italy, Greece or larger cities in Germany. Choose Billund if you live west of the Great Belt and the shorter journey to the airport cuts your total travel cost. The cheapest holiday rarely comes from one simple rule. It comes from matching the departure airport to your destination, your home base and your travel dates. That is why you should always compare CPH and BLL side by side before deciding where your holiday should start.
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