Billund Airport had its beginning in 1961 when the son of the founder of the Lego Group, Godtfred Kirk Christiansen, established a private 800-meter long runway and hangar north of his factory in Billund. With Christiansen as a key driver, more of the neighbouring municipalities were included in the group of owners, and it was planned that the airport should be expanded to a regular public airport.
Apart from that, both carriers have extensive networks within Europe and the Mediterranean (including North Africa and the Middle East). SAS flies to most European capitals, and has a particularly dense network of connections across the Baltic Sea, to Finland, Estonia, Latvia and Lithuania, as well as to Poland, where it serves the majority of even small airports. There is also a fairly good network of connections to the United Kingdom and, perhaps surprisingly, to Italy, where even smaller airports like Bologna are served.