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

Return flights

24 Oct - 28 Oct	SWISS
24 Oct - 07 Nov	SWISS
28 Oct - 29 Oct	SWISS
30 Oct - 07 Nov	Lufthansa
31 Oct - 07 Nov	Lufthansa
31 Oct - 05 Nov	Lufthansa
29 Oct - 06 Nov	Lufthansa
24 Oct - 03 Nov	SWISS
31 Oct - 06 Nov	Lufthansa
30 Oct - 06 Nov	Lufthansa
31 Oct - 11 Nov	Lufthansa
30 Oct - 03 Nov	Lufthansa
26 Oct - 28 Oct	SWISS
26 Oct - 29 Oct	SWISS
28 Oct - 30 Oct	SWISS
24 Oct - 27 Oct	SWISS
24 Oct - 26 Oct	SWISS
24 Oct - 30 Oct	Lufthansa
27 Oct - 29 Oct	SWISS
29 Oct - 30 Oct	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 227€

Return flights