Cheapest return flights from London to Sofia in September from 173€

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

Return flights

15 Sep - 29 Sep SWISS
04 Sep - 08 Sep SWISS
16 Sep - 22 Sep SWISS
26 Sep - 28 Sep SWISS
04 Sep - 05 Sep British Airways
19 Sep - 23 Sep SWISS
19 Sep - 24 Sep SWISS
30 Sep - 05 Oct SWISS
30 Sep - 05 Oct British Airways direct
03 Sep - 10 Sep SWISS
01 Sep - 05 Sep SWISS
12 Sep - 16 Sep SWISS

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

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