The cheapest flight to Sofia you can get by boooking 25 days before departure.
The most popular airlines on the route Stuttgart - Sofia: Lufthansa (LH), Aegean (A3), Air Serbia (JU).
The cheapest flights you can book on the route Stuttgart Airport (STR) - Sofia Airport (SOF).
There is no direct flight on the route from Stuttgart to Sofia
Il volo con scalo più breve dura 4h 30min.