About Balkan Holidays Bulgaria? Croatia? Montenegro? Slovenia? Serbia? Romania? Wherever you want to go, Balkan Holidays will make it quick, simple and easy for you took book that dream holiday. Balkan Holidays have over 40 years experience in offering great, quality holidays from beach holidays, winter ski, lakes, mountains, tours and excursions. Take advantage of their last minute deals and low cost flights to Bulgaria, with 21 UK airports to choose from, you’ll never be without the sun again!