Cheapest return flights from Sofia to Athens in September from $114

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

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

Return flights

12 Sep - 25 Sep SKY express direct
12 Sep - 18 Sep SKY express direct
11 Sep - 25 Sep SKY express direct
11 Sep - 18 Sep SKY express direct
03 Sep - 18 Sep SKY express direct
17 Sep - 25 Sep SKY express direct
17 Sep - 18 Sep SKY express direct
10 Sep - 25 Sep SKY express direct
10 Sep - 18 Sep SKY express direct
12 Sep - 15 Sep SKY express direct
17 Sep - 08 Oct SKY express direct
17 Sep - 06 Oct SKY express direct
26 Sep - 10 Oct SKY express direct
26 Sep - 13 Oct SKY express direct
26 Sep - 08 Oct SKY express direct
26 Sep - 06 Oct SKY express direct
12 Sep - 03 Oct SKY express direct
21 Sep - 10 Oct SKY express direct
21 Sep - 08 Oct SKY express direct
21 Sep - 06 Oct SKY express direct

Also check the deals for one-way flights from Sofia to Athens 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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