AirHint found the following cheapest return flights from Oslo (OSL) to New York (JFK) in September 2025 (see full year).

Return flights

14 Sep - 29 Sep	TAP
29 Sep - 04 Oct	Icelandair
08 Sep - 17 Sep	Icelandair
15 Sep - 21 Sep	Icelandair
10 Sep - 17 Sep	Icelandair
25 Sep - 05 Oct	Icelandair
08 Sep - 15 Sep	Finnair
18 Sep - 01 Oct	Icelandair
17 Sep - 30 Sep	American Airlines
23 Sep - 29 Sep	TAP
28 Sep - 06 Oct	TAP
11 Sep - 16 Sep	Scandinavian Airlines
29 Sep - 19 Oct	Icelandair
28 Sep - 05 Oct	Icelandair
28 Sep - 04 Oct	Icelandair
08 Sep - 14 Sep	Finnair
08 Sep - 21 Sep	Finnair
29 Sep - 05 Oct	Icelandair
26 Sep - 01 Oct	Air France
26 Sep - 05 Oct	Air France

Also check the deals for one-way flights from Oslo to New York 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 Oslo to New York in September from 356€

Return flights