Cheapest return flights from London to Sofia in September from $169

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

Return flights

12 Sep - 15 Sep British Airways
13 Sep - 20 Sep British Airways
20 Sep - 04 Oct British Airways
04 Sep - 23 Sep British Airways
18 Sep - 20 Sep British Airways
05 Sep - 15 Sep British Airways
09 Sep - 18 Sep Lufthansa
10 Sep - 17 Sep Lufthansa
10 Sep - 24 Sep Lufthansa
06 Sep - 17 Sep Lufthansa
16 Sep - 23 Sep Vueling Airlines
27 Sep - 01 Oct Lufthansa
27 Sep - 04 Oct Lufthansa
26 Sep - 12 Oct Austrian Airlines
29 Sep - 06 Oct Austrian Airlines
29 Sep - 03 Oct Austrian Airlines
08 Sep - 01 Oct Lufthansa
20 Sep - 05 Oct Austrian Airlines
26 Sep - 12 Oct British Airways direct
08 Sep - 01 Oct British Airways direct

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.

Book a cheap hotel in Sofia

Cheap car rent in Sofia

Feel free to contact us with any feedback or request another flight research.