AirHint found the following cheapest return flights from Zurich (ZRH) to Sofia (SOF) in January 2026 (see full year).

Return flights

15 Jan - 22 Jan	easyJet
23 Jan - 25 Jan	easyJet
15 Jan - 23 Jan	Vueling Airlines
16 Jan - 18 Jan	easyJet
24 Jan - 01 Feb	easyJet
22 Jan - 25 Jan	Vueling Airlines
25 Jan - 02 Feb	Air Serbia
21 Jan - 25 Jan	Air Serbia
22 Jan - 26 Jan	Air Serbia
14 Jan - 21 Jan	Air Serbia
21 Jan - 01 Feb	Air Serbia
01 Jan - 06 Jan	Air Serbia
01 Jan - 05 Jan	Air Serbia
24 Jan - 01 Feb	Bulgaria Air	direct
21 Jan - 01 Feb	Bulgaria Air	direct
25 Jan - 02 Feb	Bulgaria Air	direct

Also check the deals for one-way flights from Zurich to Sofia in January.

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 Zurich to Sofia in January from $159

Return flights