Cheapest return flights from London to Sofia in September from 147€

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

Return flights

20 Sep - 04 Oct British Airways
23 Sep - 04 Oct British Airways
16 Sep - 20 Sep British Airways
17 Sep - 20 Sep Air Serbia
28 Sep - 30 Sep Austrian Airlines
13 Sep - 16 Sep Austrian Airlines
12 Sep - 16 Sep Austrian Airlines
12 Sep - 15 Sep British Airways
17 Sep - 17 Sep Austrian Airlines
17 Sep - 24 Sep Austrian Airlines
12 Sep - 24 Sep Austrian Airlines
20 Sep - 24 Sep Austrian Airlines
26 Sep - 12 Oct Austrian Airlines
27 Sep - 01 Oct Austrian Airlines
21 Sep - 12 Oct Austrian Airlines
26 Sep - 01 Oct Austrian Airlines
27 Sep - 04 Oct Air Serbia
29 Sep - 03 Oct Austrian Airlines
20 Sep - 05 Oct Austrian Airlines
08 Sep - 01 Oct Austrian Airlines

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

Skyscanner

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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