AirHint found the following cheapest return flights from London (LHR) to Sofia (SOF) in October 2026 (see full year).

Return flights

13 Oct - 27 Oct	SWISS
24 Oct - 29 Oct	SWISS
12 Oct - 16 Oct	Brussels Airlines
24 Oct - 31 Oct	SWISS
02 Oct - 06 Oct	SWISS
02 Oct - 05 Oct	SWISS
25 Oct - 30 Oct	Lufthansa
19 Oct - 30 Oct	Lufthansa
24 Oct - 01 Nov	SWISS
12 Oct - 16 Oct	British Airways	direct
05 Oct - 08 Oct	Austrian Airlines
26 Oct - 01 Nov	British Airways	direct
19 Oct - 01 Nov	British Airways	direct
25 Oct - 01 Nov	Lufthansa
24 Oct - 01 Nov	Bulgaria Air	direct
25 Oct - 01 Nov	Bulgaria Air	direct

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 169€

Return flights