Cheapest return flights from Athens to Sofia in September from $97

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

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

Return flights

27 Sep - 29 Sep Aegean Airlines direct
28 Sep - 29 Sep Aegean Airlines direct
26 Sep - 29 Sep Aegean Airlines direct
26 Sep - 03 Oct SKY express direct
26 Sep - 15 Oct SKY express direct
28 Sep - 03 Oct SKY express direct
28 Sep - 15 Oct SKY express direct
28 Sep - 17 Oct SKY express direct

Also check the deals for one-way 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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