AirHint found the following cheapest return flights from Liverpool (LPL) to Sofia (SOF) in September 2025 (see full year).

Return flights

29 Sep - 03 Oct	Ryanair
19 Sep - 30 Sep	Ryanair
15 Sep - 17 Sep	Ryanair
17 Sep - 28 Sep	Ryanair
10 Sep - 14 Sep	Ryanair
12 Sep - 14 Sep	Ryanair
24 Sep - 28 Sep	Wizz Air
17 Sep - 24 Sep	Ryanair	direct
21 Sep - 24 Sep	Ryanair	direct
05 Sep - 07 Sep	Ryanair
08 Sep - 12 Sep	Ryanair
30 Sep - 04 Oct	Wizz Air Malta
24 Sep - 01 Oct	Ryanair
28 Sep - 15 Oct	Ryanair	direct
28 Sep - 01 Oct	Ryanair	direct
17 Sep - 01 Oct	Ryanair	direct
21 Sep - 01 Oct	Ryanair	direct
28 Sep - 08 Oct	Ryanair	direct
28 Sep - 12 Oct	Ryanair	direct
28 Sep - 05 Oct	Ryanair	direct

Also check the deals for one-way flights from Liverpool 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 return flights from Liverpool to Sofia in September from 94€

Return flights