Cheapest return flights from Frankfurt to Sofia in September from $161

AirHint found the following cheapest return flights from Frankfurt (FRA) to Sofia (SOF) in September 2026 (see full year).

Return flights

09 Sep - 16 Sep Lufthansa direct
25 Sep - 27 Sep Air Serbia
23 Sep - 04 Oct Air Serbia
22 Sep - 04 Oct Air Serbia
07 Sep - 12 Sep Lufthansa direct
06 Sep - 12 Sep Lufthansa direct
25 Sep - 27 Sep Lufthansa direct
23 Sep - 04 Oct Lufthansa direct
22 Sep - 04 Oct Lufthansa direct
05 Sep - 07 Sep Air Serbia

Also check the deals for one-way flights from Frankfurt to Sofia in September.

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