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

Return flights

28 Aug - 18 Sep	Ryanair	direct
31 Aug - 18 Sep	Ryanair	direct
30 Aug - 18 Sep	Ryanair	direct
27 Aug - 17 Sep	Ryanair	direct
28 Aug - 17 Sep	Ryanair	direct
27 Aug - 16 Sep	Ryanair	direct
29 Aug - 18 Sep	Ryanair	direct
28 Aug - 16 Sep	Ryanair	direct
18 Aug - 30 Sep	Ryanair	direct
31 Aug - 20 Sep	Ryanair	direct
07 Aug - 12 Aug	Ryanair
11 Aug - 14 Aug	Ryanair
25 Aug - 28 Aug	Ryanair
24 Aug - 28 Aug	Ryanair
26 Aug - 28 Aug	Ryanair
02 Aug - 06 Aug	Ryanair
11 Aug - 13 Aug	Ryanair
21 Aug - 25 Aug	Ryanair
23 Aug - 25 Aug	Ryanair
05 Aug - 08 Aug	Ryanair

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 92€

Return flights