Cheapest one-way flights from Athens to Sofia in September from 59€

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
18 Sep SKY express direct
29 Sep SKY express direct
22 Sep SKY express direct
30 Sep Bulgaria Air direct
19 Sep Olympic Air
24 Sep easyJet
23 Sep Aegean Airlines
27 Sep Aegean Airlines
19 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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