There are several trains per day running between Helsinki and Kouvola. There is a direct connection from Helsinki Airport to Kouvola with one transfer in Tikkurila.
Search for timetables and buy train tickets here.
More about the city: visitkouvola.fi
Questions? We´ll help.
Contact:
Armi Lampinen,
Tel. +358 20 615 6544
armi.lampinen@kinno.fi