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

Return flights

05 Oct - 19 Oct	Brussels Airlines
05 Oct - 12 Oct	Brussels Airlines
09 Oct - 12 Oct	Brussels Airlines
02 Oct - 06 Oct	Brussels Airlines
14 Oct - 20 Oct	Brussels Airlines
21 Oct - 23 Oct	Brussels Airlines
19 Oct - 20 Oct	Austrian Airlines
12 Oct - 20 Oct	Air Serbia
12 Oct - 13 Oct	Air Serbia
05 Oct - 09 Oct	Air Serbia
30 Oct - 03 Nov	SWISS
31 Oct - 04 Nov	Lufthansa
27 Oct - 01 Nov	SWISS
31 Oct - 03 Nov	Lufthansa
24 Oct - 05 Nov	Lufthansa
24 Oct - 01 Nov	Lufthansa
26 Oct - 01 Nov	Lufthansa
18 Oct - 01 Nov	Lufthansa
29 Oct - 02 Nov	Lufthansa
30 Oct - 02 Nov	Lufthansa

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.

Book a cheap hotel in Sofia

Cheap car rent in Sofia

Cheapest return flights from London to Sofia in October from 119€

Return flights