Cheapest one-way flights from Athens to Sofia in September from 57€

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

One-Way flights

18 Sep SKY express direct
10 Sep Wizz Air
17 Sep Ryanair
24 Sep easyJet
28 Sep Volotea
27 Sep Aegean Airlines direct
16 Sep Ryanair
14 Sep Volotea
08 Sep SKY express direct
10 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.

Book a cheap hotel in Sofia

Cheap car rent in Sofia

Feel free to contact us with any feedback or request another flight research.