[2] The Great Belt Fixed Link (opened in 1997) connecting the islands of Zealand and Funen and the New Little Belt Bridge (opened in 1970) connecting Funen and Jutland greatly improved the traffic flow across the country on both motorways and rail.

The two largest airports of Copenhagen and Billund provide a variety of domestic and international connections, while ferries provide services to the Faroe Islands, Greenland, Iceland, Germany, Sweden, and Norway, as well as domestic routes servicing most Danish islands.

It is connected by train to Copenhagen Central Station and beyond as well as to Malmö and other towns in Sweden.

Denmark also engaged in the large scale cargo freights and slave transports of the European colonization endeavours in the Middle Ages and operated several smaller colonies of its own across the globe by the means of seafaring.

[9] Among the most important ports for cargo traffic (millions of tonnes per year in 2007) are: Waterways have historically and traditionally been crucial to local transportation in Denmark proper.

There is a 160 km natural canal through the shallow Limfjorden in northern Jutland, linking the North Sea to the Kattegat.

Many waterways has formerly been redirected and led through manmade canals in the 1900s, but mainly for agricultural purposes and not to facilitate transportation on any major scale.

In 2018, the fleet surpassed 20 million gt as the government sought to repatriate Danish-owned tonnage registered abroad, with measures including removal of the registration fee.