Go through your results for flights to Pristina in Serbia and Montenegro with Netflights. Although SWISS usually has the best prices, it's best to double check what's available for your travel dates.
Flexible on dates? Conducting your search by month allows you to compare prices to Pristina throughout the year. For example, prices will almost certainly be higher around July, as this is peak season in Pristina. Accommodation prices will also be higher at this time of year. Flights to Pristina are usually cheapest in May.
Look out for flights with SWISS, as they often have good deals. Or broaden your search by looking at other airports in Serbia and Montenegro.
For even more options, check what other airports you could fly to Pristina from. You might be able to make a saving by going from a different airport or city.