Cheapest return flights from London to Sofia in September from 175€

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

Return flights

11 Sep - 15 Sep SWISS
18 Sep - 21 Sep SWISS
08 Sep - 22 Sep Austrian Airlines
07 Sep - 20 Sep British Airways direct
11 Sep - 13 Sep Austrian Airlines
25 Sep - 27 Sep LOT
18 Sep - 21 Sep British Airways direct
11 Sep - 13 Sep Bulgaria Air direct

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

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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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