AirHint found the following cheapest return flights from Paris (CDG) to Sofia (SOF) in October 2025 (see full year).

Return flights

02 Oct - 16 Oct	Air Serbia
23 Oct - 26 Oct	Air Serbia
13 Oct - 28 Oct	Air Serbia
08 Oct - 13 Oct	Air Serbia
28 Oct - 04 Nov	Air Serbia
03 Oct - 05 Oct	Austrian Airlines
16 Oct - 21 Oct	Austrian Airlines
10 Oct - 14 Oct	Air Serbia
25 Oct - 01 Nov	Lufthansa
02 Oct - 03 Oct	Air Serbia
13 Oct - 15 Oct	Austrian Airlines
03 Oct - 03 Oct	Air Serbia

Also check the deals for one-way flights from Paris to Sofia in October.

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 Paris to Sofia in October from $198

Return flights