Cheapest one-way flights from Bucharest to Sofia in September from 70€

Best time to book flights for Bucharest (OTP) to Sofia (SOF) flights at AirHint

AirHint found the following cheapest one-way flights from Bucharest (OTP) to Sofia (SOF) in September 2025 (see full year).

One-Way flights

24 Sep Ryanair
28 Sep Air Serbia
29 Sep Air Serbia
26 Sep Air Serbia
07 Sep Air Serbia
10 Sep Air Serbia
22 Sep Air Serbia
23 Sep Wizz Air Malta
25 Sep Air Serbia
23 Sep TAROM direct

Also check the deals for return flights from Bucharest 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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