Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Villach (31% of total searches to Kärntner Seen). The next most popular destinations are Velden am Wörthersee (31%) and Klagenfurt (23%). Searches for hotels in Portschach am Wörthersee (15%) are also popular.
KAYAK users have found double rooms in Kärntner Seen for as cheap as $118 (Villach) in the last 3 days. The average price is $292.