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

Return flights

09 Sep - 18 Sep	Finnair
02 Sep - 07 Sep	Icelandair
18 Sep - 25 Sep	Icelandair
09 Sep - 18 Sep	Scandinavian Airlines	direct
03 Sep - 13 Oct	Scandinavian Airlines	direct
03 Sep - 13 Oct	Lufthansa
24 Sep - 08 Oct	Icelandair
10 Sep - 17 Sep	Scandinavian Airlines	direct
24 Sep - 06 Oct	SWISS
21 Sep - 15 Oct	SWISS
04 Sep - 11 Sep	SWISS
29 Sep - 06 Oct	SWISS
14 Sep - 16 Sep	Brussels Airlines
22 Sep - 28 Sep	Finnair
23 Sep - 05 Oct	Finnair
07 Sep - 14 Sep	Lufthansa
11 Sep - 14 Sep	SWISS
23 Sep - 05 Oct	Scandinavian Airlines	direct
21 Sep - 11 Oct	SWISS
16 Sep - 11 Oct	Finnair

Also check the deals for one-way flights from New York to Oslo 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 New York to Oslo in September from 329€

Return flights