Up until last summer Air Serbia did offer a limited service from LGW to Belgrade but all flights are now consolidated at LHR.
I don't think that the demand is there for BA to fly to Belgrade either from LGW or LHR and Air Serbia have it covered from LHR.
No Zagreb from LGW anymore as EasyJet ceased flying the route about two years ago.
As far as demand goes on a personal side I have been to every European capital bar from Belgrade and Pristina.
Last edited by canberra97; 19th Nov 2017 at 15:16.