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

Return flights

09 Sep - 16 Sep	Air Canada
17 Sep - 24 Sep	TAP
01 Sep - 08 Sep	TAP
03 Sep - 16 Sep	SWISS
09 Sep - 23 Sep	Icelandair
09 Sep - 22 Sep	Icelandair
05 Sep - 13 Sep	FrenchBee
04 Sep - 13 Sep	FrenchBee
04 Sep - 14 Sep	FrenchBee
21 Sep - 28 Sep	TAP
29 Sep - 19 Oct	Austrian Airlines	direct

Also check the deals for one-way flights from Newark to Vienna 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 Vienna in September from 448€

Return flights