AirHint found the following cheapest return flights from Newark (EWR) to Port-of-spain (POS) in September 2025 (see full year).

Return flights

21 Sep - 23 Sep	United
22 Sep - 24 Sep	United
30 Sep - 29 Oct	United
26 Sep - 03 Oct	United
24 Sep - 28 Sep	United
21 Sep - 25 Sep	United
19 Sep - 22 Sep	United
18 Sep - 25 Sep	United
15 Sep - 06 Oct	United
09 Sep - 28 Sep	United
12 Sep - 15 Sep	Air Canada
12 Sep - 19 Sep	United
10 Sep - 17 Sep	United
26 Sep - 10 Oct	Spirit Airlines
19 Sep - 03 Oct	Copa

Also check the deals for one-way flights from Newark to Port-of-spain 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 Port-of-spain in September from $316

Return flights