AirHint found the following cheapest return flights from Zurich (ZRH) to Sofia (SOF) in October 2025 (see full year).

Return flights

10 Oct - 14 Oct	easyJet
23 Oct - 27 Oct	easyJet
23 Oct - 26 Oct	easyJet
10 Oct - 13 Oct	easyJet
26 Oct - 30 Oct	Pegasus Airlines
23 Oct - 30 Oct	easyJet
30 Oct - 03 Nov	easyJet
31 Oct - 03 Nov	Vueling Airlines
20 Oct - 25 Oct	easyJet
07 Oct - 09 Oct	easyJet
07 Oct - 20 Oct	easyJet
23 Oct - 30 Oct	SWISS	direct
30 Oct - 03 Nov	SWISS	direct
31 Oct - 02 Nov	Air Serbia
29 Oct - 02 Nov	Air Europa
28 Oct - 02 Nov	Bulgaria Air

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

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 October from $162

Return flights