Norwegian Air is starting flights from Gatwick to Billund, the home of Lego, after Ryanair withdrew its service.
The year-route route starts on June 30 with six flights a week to the destination in western Denmark in the summer peak.
Legoland Billund is offering free entry for children from the UK flying to Billund with Norwegian along with a full paying adult for the 2025 season.
Norwegian Denmark communications and public affairs director Sara Neergaard said: “Norwegian and Billund airport have had a strong partnership for many years, and we see great potential for growth in this region.
“With Ryanair’s recent exit, we now have a unique opportunity to strengthen our presence in Billund and western Denmark.
“The new route to London Gatwick is just the first step, and we are continuously evaluating opportunities to expand our offerings from Billund.”
Gatwick airlines relations manager Jennifer Newman said: ”We are delighted to welcome Norwegian’s new direct year-round service connecting London Gatwick with Billund.
“This route provides essential connectivity for both business and leisure travellers, further strengthening Gatwick’s extensive European and long-haul network.”