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

Return flights

08 Oct - 14 Oct	SWISS
07 Oct - 15 Oct	SWISS
08 Oct - 16 Oct	SWISS
07 Oct - 08 Oct	SWISS
08 Oct - 09 Oct	SWISS
07 Oct - 10 Oct	SWISS
08 Oct - 15 Oct	SWISS
14 Oct - 16 Oct	SWISS
07 Oct - 09 Oct	SWISS
17 Oct - 26 Oct	ITA Airways
30 Oct - 04 Nov	Lufthansa
31 Oct - 04 Nov	Lufthansa
31 Oct - 03 Nov	Lufthansa
30 Oct - 03 Nov	Lufthansa
20 Oct - 10 Nov	Lufthansa
28 Oct - 19 Nov	SWISS
28 Oct - 10 Nov	SWISS
31 Oct - 02 Nov	Lufthansa
30 Oct - 02 Nov	Lufthansa
29 Oct - 02 Nov	SWISS

Also check the deals for one-way flights from London 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 London to Sofia in October from 203€

Return flights