You can find Air Serbia flights on Wingie. Wingie directly gathers instant data of the airline and compares it with other airlines. You can view all Pegasus flights for the date and destination you are looking for, and compare prices with other airlines.
For your Air Serbia flights booked from Wingie, you can check-in online here and PNR inquiries via this page.
With Air Serbia, you can fly directly to the following cities abroad: Amsterdam, Belgrade, Zurich, Almaty, Vienna, Tirana.