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

Return flights

19 Aug - 02 Sep	SWISS
14 Aug - 17 Aug	SWISS
23 Aug - 02 Sep	SWISS
25 Aug - 27 Aug	SWISS
19 Aug - 01 Sep	SWISS
21 Aug - 01 Sep	SWISS
25 Aug - 28 Aug	SWISS
26 Aug - 28 Aug	SWISS
14 Aug - 16 Aug	SWISS
05 Aug - 07 Aug	SWISS
24 Aug - 10 Sep	Lufthansa
13 Aug - 03 Sep	Lufthansa
07 Aug - 16 Aug	SWISS
21 Aug - 31 Aug	SWISS
06 Aug - 10 Aug	Lufthansa
18 Aug - 21 Aug	SWISS
31 Aug - 07 Sep	Lufthansa
12 Aug - 06 Sep	Lufthansa
28 Aug - 11 Sep	SWISS
15 Aug - 01 Sep	KLM

Also check the deals for one-way flights from London to Sofia in August.

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 August from 198€

Return flights