AirHint found the following cheapest return flights from Newark (EWR) to Istanbul (IST) in October 2025 (see full year).

Return flights

25 Oct - 14 Nov	Icelandair
25 Oct - 31 Oct	Icelandair
01 Oct - 06 Oct	Icelandair
04 Oct - 17 Oct	Icelandair
04 Oct - 31 Oct	Icelandair
22 Oct - 27 Oct	Icelandair
22 Oct - 31 Oct	Icelandair
14 Oct - 21 Oct	Icelandair
14 Oct - 27 Oct	Icelandair
29 Oct - 12 Nov	Air Canada
21 Oct - 28 Oct	Air Canada
07 Oct - 21 Oct	SWISS
20 Oct - 20 Nov	Lufthansa
04 Oct - 01 Nov	Icelandair
27 Oct - 11 Nov	Air Canada
30 Oct - 04 Nov	Air Canada
20 Oct - 04 Nov	Lufthansa
27 Oct - 17 Nov	Lufthansa
22 Oct - 10 Nov	Lufthansa
30 Oct - 22 Nov	TAP

Also check the deals for one-way flights from Newark to Istanbul 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 Newark to Istanbul in October from $380

Return flights