From February 18th of this year DAT, the operator of flights from Sonderborg, is bumping up the number of routes that fly between Copenhagen and Sonderborg.
As of this month the weekly timetable looks like this:
|Departing Sonderborg||Arrival Copenhagen|
|18:20 (Monday-Friday + Sunday)||19:05|
|Departing Copenhagen||Arrival Sonderborg|
|19:45 (Sunday Only)||20:30|
Prices for tickets
Prices start at 499DKK per way if you book early making it feasible compared to the 419DKK you pay for the 4-5 hour train ride.
You can book your flight from Sonderborg to Copenhagen on DAT’s site here.