Cheapest one-way flights from Athens to Sofia in September from 54€

Best time to book flights for Athens (ATH) to Sofia (SOF) flights at AirHint

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

One-Way flights

17 Sep SKY express direct
10 Sep SKY express direct
24 Sep SKY express direct
12 Sep SKY express direct
26 Sep SKY express direct
09 Sep Bulgaria Air direct
11 Sep Bulgaria Air direct
25 Sep SKY express direct
07 Sep SKY express direct
08 Sep SKY express direct

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

Skyscanner

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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