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

Return flights

19 Oct - 04 Nov	Lufthansa
28 Oct - 04 Nov	Lufthansa
15 Oct - 29 Oct	Lufthansa
13 Oct - 27 Oct	Austrian Airlines
09 Oct - 14 Oct	Austrian Airlines
10 Oct - 15 Oct	Austrian Airlines
24 Oct - 15 Nov	Austrian Airlines
06 Oct - 12 Oct	Lufthansa
06 Oct - 13 Oct	SWISS
09 Oct - 13 Oct	British Airways
05 Oct - 19 Oct	SWISS
04 Oct - 18 Oct	Lufthansa
09 Oct - 18 Oct	Lufthansa

Also check the deals for one-way flights from New York 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 New York to Sofia in October from 298€

Return flights