AirHint found the following cheapest return flights from Sofia (SOF) to Barcelona (BCN) in September 2026 (see full year).

Return flights

23 Sep - 24 Sep	Ryanair	direct
21 Sep - 24 Sep	Wizz Air	direct
22 Sep - 24 Sep	Wizz Air	direct
01 Sep - 02 Sep	Air Serbia
21 Sep - 22 Sep	Wizz Air	direct
03 Sep - 16 Sep	Ryanair	direct
03 Sep - 15 Sep	Ryanair	direct
01 Sep - 16 Sep	Ryanair	direct
01 Sep - 15 Sep	Ryanair	direct
05 Sep - 15 Sep	Wizz Air	direct

Also check the deals for one-way flights from Sofia to Barcelona 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 Sofia to Barcelona in September from $146

Return flights