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

Return flights

26 Sep - 14 Oct	Aer Lingus
29 Sep - 06 Oct	Aer Lingus
18 Sep - 21 Sep	Icelandair
27 Sep - 14 Oct	Aer Lingus
25 Sep - 11 Oct	Icelandair
11 Sep - 16 Sep	Icelandair
03 Sep - 09 Sep	Icelandair
22 Sep - 26 Sep	Icelandair
18 Sep - 22 Sep	Icelandair
12 Sep - 14 Sep	Icelandair
10 Sep - 16 Sep	Icelandair
09 Sep - 18 Sep	Icelandair
04 Sep - 09 Sep	Icelandair
02 Sep - 09 Sep	Icelandair
27 Sep - 01 Oct	Aer Lingus
27 Sep - 02 Oct	Aer Lingus
26 Sep - 03 Oct	United	direct
29 Sep - 06 Oct	United	direct
26 Sep - 14 Oct	United	direct
27 Sep - 14 Oct	United	direct

Also check the deals for one-way flights from Newark to Amsterdam 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 Amsterdam in September from 373€

Return flights