AirHint found the following cheapest return flights from London (STN) to Sofia (SOF)
in September 2025 (see full year ).
Return flights
24 Sep
- 09 Oct
Ryanair
$ 61
direct
24 Sep
- 10 Oct
Ryanair
$ 64
direct
24 Sep
- 11 Oct
Ryanair
$ 64
direct
24 Sep
- 08 Oct
Ryanair
$ 65
direct
16 Sep
- 03 Oct
Ryanair
$ 66
direct
24 Sep
- 03 Oct
Ryanair
$ 67
direct
16 Sep
- 02 Oct
Ryanair
$ 68
direct
24 Sep
- 02 Oct
Ryanair
$ 70
direct
16 Sep
- 05 Oct
Ryanair
$ 75
direct
16 Sep
- 25 Sep
Ryanair
$ 76
direct
24 Sep
- 05 Oct
Ryanair
$ 76
direct
24 Sep
- 25 Sep
Ryanair
$ 77
direct
10 Sep
- 25 Sep
Ryanair
$ 78
direct
16 Sep
- 27 Sep
Ryanair
$ 89
direct
24 Sep
- 27 Sep
Ryanair
$ 90
direct
09 Sep
- 25 Sep
Ryanair
$ 91
direct
10 Sep
- 27 Sep
Ryanair
$ 91
direct
23 Sep
- 25 Sep
Ryanair
$ 103
direct
17 Sep
- 25 Sep
Ryanair
$ 103
direct
11 Sep
- 25 Sep
Ryanair
$ 103
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.