Go through your results for flights to Kharkov in Ukraine with Netflights. Although Turkish Airlines 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 Kharkov throughout the year. For example, prices will almost certainly be higher around December, as this is peak season in Kharkov. Accommodation prices will also be higher at this time of year. Flights to Kharkov are usually cheapest in March.
Look out for flights with Turkish Airlines, as they often have good deals. Or broaden your search by looking at other airports in Ukraine.
You can also broaden your search by looking at more than one departure airport. Have a look around – you might be able to save by flying from a different airport or city.