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

Return flights

27 Aug - 10 Sep	Lufthansa
22 Aug - 18 Sep	Lufthansa
22 Aug - 09 Sep	Lufthansa
25 Aug - 10 Sep	Lufthansa
28 Aug - 04 Sep	Lufthansa
21 Aug - 04 Sep	Lufthansa
25 Aug - 09 Sep	Lufthansa
15 Aug - 17 Sep	Lufthansa
20 Aug - 27 Aug	Lufthansa
13 Aug - 03 Sep	Lufthansa
21 Aug - 03 Sep	Lufthansa
19 Aug - 20 Aug	Lufthansa
13 Aug - 20 Aug	Lufthansa
19 Aug - 26 Aug	Lufthansa
13 Aug - 19 Aug	Lufthansa
13 Aug - 14 Aug	Lufthansa
20 Aug - 26 Aug	Lufthansa
05 Aug - 08 Aug	Lufthansa
12 Aug - 14 Aug	Lufthansa
12 Aug - 19 Aug	Lufthansa

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 $265

Return flights