Air Berlin will introduce new flights to a number of destinations this summer including Jersey, Oslo and Venice.
Having launched flights to Cyprus, the Azores and Ciudad Real this winter, the airline will also introduce flights to Krakow, Rijeka and Split as part of its summer schedule.
A weekly flight to Jersey from Dusseldorf will begin in May, while flights to Venice will operate on a daily basis between Monday and Sunday.
Flights to Oslo and Krakow will take off from Berlin-Tegel, while the two new Croatian destinations will be served by a Bombardier Q400 from Nuremberg.
According to an Air Berlin statement, the airline is planning on introducing further new flights this summer.
"There will be a daily non-stop service from Dusseldorf to St. Petersburg. Flights from Hanover to Stockholm and from Stuttgart to Nice are also new," it said.
"Furthermore, Air Berlin will be reintroducing the daily non-stop flight from Amsterdam to Palma de Mallorca to its schedule."
Air Berlin announced earlier this month that it had increased its revenue over the course of February.