Cheapest return flights from Athens to Sofia in September from $107

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

Return flights

25 Sep - 13 Oct SKY express direct
10 Sep - 15 Sep Wizz Air
17 Sep - 21 Sep Ryanair
10 Sep - 21 Sep SKY express direct
25 Sep - 03 Oct SKY express direct
10 Sep - 17 Sep Wizz Air
10 Sep - 17 Sep SKY express direct
18 Sep - 21 Sep Wizz Air
15 Sep - 21 Sep SKY express direct
01 Sep - 21 Sep SKY express direct
25 Sep - 26 Sep SKY express direct
04 Sep - 21 Sep SKY express direct
25 Sep - 15 Oct SKY express direct
25 Sep - 05 Oct SKY express direct
25 Sep - 09 Oct SKY express direct
25 Sep - 08 Oct SKY express direct
25 Sep - 01 Oct SKY express direct
25 Sep - 02 Oct SKY express direct
25 Sep - 12 Oct SKY express direct
30 Sep - 03 Oct Aegean Airlines 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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