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

Return flights

29 Sep - 20 Oct	Ryanair	direct
29 Sep - 02 Oct	Ryanair	direct
29 Sep - 06 Oct	Ryanair	direct
29 Sep - 04 Oct	Ryanair
15 Sep - 01 Oct	Ryanair
28 Sep - 02 Oct	Ryanair
23 Sep - 30 Sep	Ryanair
29 Sep - 03 Oct	Ryanair
15 Sep - 22 Sep	Ryanair
27 Sep - 30 Sep	Ryanair
22 Sep - 03 Oct	Ryanair
28 Sep - 01 Oct	Ryanair
15 Sep - 25 Sep	Ryanair
22 Sep - 25 Sep	Ryanair
26 Sep - 30 Sep	Ryanair
16 Sep - 27 Sep	Ryanair
19 Sep - 26 Sep	Ryanair
23 Sep - 29 Sep	Ryanair
25 Sep - 29 Sep	Ryanair	direct
23 Sep - 03 Oct	Ryanair

Also check the deals for one-way flights from Birmingham 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 Birmingham to Sofia in September from 61€

Return flights