Cheapest return flights from London to Sofia in September from $115

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

Return flights

25 Sep - 08 Oct Ryanair direct
25 Sep - 13 Oct Ryanair direct
25 Sep - 15 Oct Ryanair direct
25 Sep - 07 Oct Ryanair direct
22 Sep - 08 Oct Ryanair direct
25 Sep - 14 Oct Ryanair direct
16 Sep - 07 Oct Ryanair direct
02 Sep - 16 Sep Ryanair direct
22 Sep - 13 Oct Ryanair direct
18 Sep - 08 Oct Ryanair direct
21 Sep - 08 Oct Ryanair direct
02 Sep - 23 Sep Ryanair direct
01 Sep - 16 Sep Ryanair direct
04 Sep - 16 Sep Ryanair direct
07 Sep - 16 Sep Ryanair direct
08 Sep - 16 Sep Ryanair direct
09 Sep - 16 Sep Ryanair direct
03 Sep - 16 Sep Ryanair direct
02 Sep - 17 Sep Ryanair direct
13 Sep - 16 Sep Ryanair 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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