AirHint found the following cheapest return flights from Newark (EWR) to Santorini (Thira) (JTR) in September 2025 (see full year).

Return flights

22 Sep - 29 Sep	Air Canada
15 Sep - 19 Sep	SWISS
18 Sep - 22 Sep	SWISS
18 Sep - 21 Sep	SWISS
27 Sep - 04 Oct	Lufthansa
16 Sep - 20 Sep	Scandinavian Airlines
07 Sep - 13 Sep	Icelandair
17 Sep - 30 Sep	Lufthansa

Also check the deals for one-way flights from Newark to Santorini (Thira) in September.

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 Santorini (Thira) in September from $498

Return flights