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

Return flights

20 Aug - 27 Aug	Air Canada
20 Aug - 28 Aug	Air Canada
26 Aug - 03 Sep	Scandinavian Airlines
28 Aug - 02 Sep	Air Canada
29 Aug - 02 Sep	Scandinavian Airlines
28 Aug - 31 Aug	Lufthansa
19 Aug - 24 Aug	Spirit Airlines
29 Aug - 04 Sep	Air Canada
26 Aug - 02 Sep	Scandinavian Airlines
25 Aug - 02 Sep	United
19 Aug - 23 Aug	United
26 Aug - 31 Aug	Lufthansa
20 Aug - 26 Aug	Scandinavian Airlines
25 Aug - 29 Aug	Scandinavian Airlines
22 Aug - 29 Aug	Scandinavian Airlines
22 Aug - 30 Aug	United
29 Aug - 07 Sep	Scandinavian Airlines

Also check the deals for one-way flights from New York to Oslo in August.

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 August from 421€

Return flights