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

Return flights

16 Sep - 22 Sep	SWISS
17 Sep - 25 Sep	Austrian Airlines
10 Sep - 17 Sep	Austrian Airlines
10 Sep - 23 Sep	Austrian Airlines
11 Sep - 23 Sep	Austrian Airlines
03 Sep - 10 Sep	Austrian Airlines
01 Sep - 10 Sep	AJet

Also check the deals for one-way flights from Cairo 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.

Book a cheap hotel in Sofia

Cheap car rent in Sofia

Cheapest return flights from Cairo to Sofia in September from 197€

Return flights