AirHint found the following cheapest one-way flights from London (LTN) to Sofia (SOF) in September 2025 (see full year).

One-Way flights

23 Sep	Wizz Air	direct
08 Sep	Wizz Air	direct
16 Sep	Wizz Air	direct
15 Sep	Wizz Air	direct
22 Sep	Wizz Air	direct
26 Sep	Wizz Air	direct
24 Sep	Wizz Air	direct
17 Sep	Wizz Air	direct
21 Sep	Wizz Air	direct
25 Sep	Wizz Air	direct

Also check the deals for return flights from London to Sofia in September.

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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Cheapest one-way flights from London to Sofia in September from 33€

One-Way flights