December and January are a priori expensive tickets for the regular season (Christmas, New Year)
ksuhsenka, how will your link help to reduce the cost of the trip?
I am not a travel agent and I don’t offer anything to anyone, it was you who threw off the link to the German resource, so I’m wondering how to use it without knowing German?
Now quite often https://www.tuifly.be/ sells its direct charters from Brussels.