Cheapest return flights from Cologne to Sofia in September from 93€

Best time to book flights for Cologne (CGN) to Sofia (SOF) flights at AirHint

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

Return flights

19 Sep - 29 Sep Ryanair direct
12 Sep - 29 Sep Ryanair direct
26 Sep - 29 Sep Ryanair direct
08 Sep - 29 Sep Ryanair direct
26 Sep - 17 Oct Ryanair direct
01 Sep - 19 Sep Ryanair direct
12 Sep - 19 Sep Ryanair direct
01 Sep - 05 Sep Ryanair direct
08 Sep - 19 Sep Ryanair direct
12 Sep - 20 Sep Ryanair
01 Sep - 15 Sep Ryanair direct

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

Book a cheap hotel in Sofia

Cheap car rent in Sofia