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

Return flights

19 Aug - 18 Sep	Icelandair
24 Aug - 03 Sep	Air Canada
21 Aug - 19 Sep	FrenchBee
11 Aug - 11 Sep	Austrian Airlines
12 Aug - 26 Aug	Icelandair
20 Aug - 10 Sep	Lufthansa
25 Aug - 08 Sep	Air Canada
21 Aug - 04 Sep	Austrian Airlines
28 Aug - 12 Sep	Icelandair
04 Aug - 13 Aug	British Airways
05 Aug - 13 Aug	British Airways
29 Aug - 04 Sep	Icelandair
21 Aug - 02 Sep	Air Canada
14 Aug - 28 Aug	Air Canada
13 Aug - 28 Aug	British Airways
13 Aug - 21 Aug	Air Canada
04 Aug - 12 Aug	British Airways
25 Aug - 27 Aug	FrenchBee
13 Aug - 22 Aug	Icelandair
14 Aug - 21 Aug	Air Canada

Also check the deals for one-way flights from Newark to Istanbul in August.

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 August from $545

Return flights