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

Return flights

26 Oct - 28 Oct	Wizz Air Malta
26 Oct - 29 Oct	Wizz Air Malta
31 Oct - 02 Nov	Wizz Air Malta
20 Oct - 22 Oct	Wizz Air Malta
30 Oct - 02 Nov	HiSky Europe
21 Oct - 26 Oct	Ryanair
17 Oct - 20 Oct	Wizz Air Malta
17 Oct - 24 Oct	Wizz Air Malta
20 Oct - 24 Oct	Ryanair
27 Oct - 03 Nov	Ryanair
20 Oct - 25 Oct	Wizz Air Malta
28 Oct - 29 Oct	Wizz Air Malta
21 Oct - 25 Oct	Ryanair
30 Oct - 01 Nov	HiSky Europe
28 Oct - 03 Nov	Wizz Air Malta
27 Oct - 02 Nov	Ryanair
29 Oct - 02 Nov	Wizz Air Malta
27 Oct - 03 Nov	TAROM	direct
28 Oct - 03 Nov	TAROM	direct
27 Oct - 01 Nov	TAROM

Also check the deals for one-way flights from Bucharest 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 Bucharest to Sofia in October from $131

Return flights