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

Return flights

19 Jan - 25 Jan	Vueling Airlines
23 Jan - 30 Jan	easyJet
24 Jan - 02 Feb	Vueling Airlines
28 Jan - 29 Jan	Air Serbia
10 Jan - 17 Jan	Pegasus Airlines
11 Jan - 16 Jan	Vueling Airlines
29 Jan - 02 Feb	Vueling Airlines
15 Jan - 22 Jan	Air Serbia
20 Jan - 28 Jan	Air Serbia
28 Jan - 31 Jan	Air Serbia
16 Jan - 19 Jan	Vueling Airlines
20 Jan - 22 Jan	Air Serbia
26 Jan - 02 Feb	Air Serbia
29 Jan - 01 Feb	Air Serbia
28 Jan - 01 Feb	Air Serbia
29 Jan - 02 Feb	SWISS	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 141€

Return flights