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

Return flights

17 Jun - 21 Jun	Lufthansa	direct
18 Jun - 21 Jun	Lufthansa	direct
10 Jun - 15 Jun	Air Serbia
01 Jun - 06 Jun	Air Serbia
08 Jun - 10 Jun	Air Serbia
24 Jun - 28 Jun	Air Serbia
09 Jun - 14 Jun	Lufthansa	direct
24 Jun - 28 Jun	Lufthansa	direct
23 Jun - 26 Jun	Air Serbia
07 Jun - 09 Jun	Air Serbia

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

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Frankfurt to Sofia in June from 135€

Return flights