AirHint found the following cheapest return flights from London (LHR) to Sofia (SOF)
in September 2025 (see full year ).
Return flights
26 Sep
- 29 Sep
British Airways
155 €
direct
19 Sep
- 22 Sep
British Airways
156 €
direct
26 Sep
- 28 Sep
British Airways
164 €
24 Sep
- 28 Sep
British Airways
168 €
26 Sep
- 30 Sep
British Airways
171 €
01 Sep
- 30 Sep
British Airways
175 €
06 Sep
- 20 Sep
Air Serbia
176 €
14 Sep
- 19 Sep
British Airways
177 €
direct
15 Sep
- 19 Sep
British Airways
182 €
direct
01 Sep
- 19 Sep
British Airways
182 €
direct
26 Sep
- 01 Oct
British Airways
183 €
direct
23 Sep
- 03 Oct
SWISS
187 €
23 Sep
- 02 Oct
SWISS
187 €
27 Sep
- 07 Oct
Lufthansa
189 €
27 Sep
- 01 Oct
Lufthansa
189 €
29 Sep
- 02 Oct
Austrian Airlines
192 €
18 Sep
- 02 Oct
Lufthansa
196 €
27 Sep
- 01 Oct
Bulgaria Air
250 €
direct
Also check the deals for one-way 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.