Cheapest return flights from London to Sofia in September from 170€

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

Return flights

26 Sep - 30 Sep SWISS
26 Sep - 29 Sep SWISS
29 Sep - 03 Oct SWISS
26 Sep - 01 Oct SWISS
30 Sep - 05 Oct SWISS
29 Sep - 02 Oct SWISS
30 Sep - 03 Oct SWISS
22 Sep - 06 Oct LOT
24 Sep - 29 Sep LOT
25 Sep - 30 Sep LOT
27 Sep - 01 Oct LOT
27 Sep - 02 Oct LOT
12 Sep - 19 Sep SWISS
01 Sep - 08 Sep SWISS
27 Sep - 30 Sep LOT
05 Sep - 12 Sep SWISS
23 Sep - 07 Oct LOT
22 Sep - 29 Sep LOT
25 Sep - 28 Sep LOT
28 Sep - 02 Oct LOT

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

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