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

Return flights

30 Jan - 01 Feb	easyJet
24 Jan - 31 Jan	easyJet
18 Jan - 01 Feb	Vueling Airlines
25 Jan - 01 Feb	Eurowings
23 Jan - 30 Jan	easyJet
18 Jan - 20 Jan	Pegasus Airlines
30 Jan - 09 Feb	easyJet
23 Jan - 25 Jan	easyJet
29 Jan - 09 Feb	Vueling Airlines
16 Jan - 19 Jan	easyJet
02 Jan - 09 Jan	Air Serbia
08 Jan - 12 Jan	Vueling Airlines
23 Jan - 26 Jan	Air Serbia
05 Jan - 11 Jan	easyJet
08 Jan - 12 Jan	SWISS	direct
29 Jan - 09 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 137€

Return flights