There are 2 train companies operating 5 routes - ICE75, 131, 131, 131, 131. The cheapest train costs $57 and is 6h 17min.
Faretrotter is a travel aggregation resource that gathers travel company amenities and statistics and compares modes of transportation between cities. Use Faretrotter to plan your next trip, or purchase a ticket your next city.
There are 3 ways to travel from CPH to SGD. 1 flight, 2 trains and 1 by car are possible between the two areas. The by car from CPH to SGD is the cheapest and fastest. The train operated by running from Trekroner St. to Flensburg is the most convenient.
It's important to check each mode when booking your ticket so that you can find the best method for you. The cost of each type varies differently, so be sure to use Faretrotter to keep an eye out!