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

Return flights

06 Sep - 08 Sep	Pegasus Airlines
06 Sep - 13 Sep	Air Arabia Abu Dhabi
04 Sep - 13 Sep	Etihad Airways
13 Sep - 29 Sep	Air Arabia Abu Dhabi
13 Sep - 30 Sep	Pegasus Airlines
04 Sep - 14 Sep	Etihad Airways
05 Sep - 08 Sep	Air Arabia Abu Dhabi
05 Sep - 13 Sep	Etihad Airways
06 Sep - 07 Sep	Air Arabia Abu Dhabi
05 Sep - 14 Sep	Etihad Airways

Also check the deals for one-way flights from Abu Dhabi to Sofia in September.

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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Cheapest return flights from Abu Dhabi to Sofia in September from $311

Return flights