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

Return flights

29 Oct - 07 Nov	Icelandair
11 Oct - 20 Oct	Icelandair
08 Oct - 13 Oct	Icelandair
18 Oct - 27 Oct	Icelandair
28 Oct - 04 Nov	Lufthansa
26 Oct - 10 Nov	Lufthansa
11 Oct - 17 Oct	Icelandair
02 Oct - 13 Oct	TAP
09 Oct - 16 Oct	Icelandair
23 Oct - 06 Nov	Air Canada
13 Oct - 20 Oct	TAP
26 Oct - 03 Nov	British Airways
07 Oct - 13 Oct	Lufthansa
02 Oct - 09 Oct	TAP
19 Oct - 09 Nov	Lufthansa
07 Oct - 14 Oct	Icelandair
17 Oct - 07 Nov	British Airways
30 Oct - 06 Nov	British Airways
18 Oct - 16 Nov	British Airways
17 Oct - 16 Nov	British Airways

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 $433

Return flights