Cheapest return flights from Boston to Oslo in September from $394

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

Return flights

18 Sep - 09 Oct Icelandair
03 Sep - 11 Sep Austrian Airlines
18 Sep - 25 Sep Icelandair
30 Sep - 07 Oct Icelandair
03 Sep - 10 Sep Lufthansa
09 Sep - 16 Sep Lufthansa
10 Sep - 17 Sep Lufthansa
17 Sep - 11 Oct Icelandair
02 Sep - 09 Sep Lufthansa
08 Sep - 04 Oct SWISS
16 Sep - 23 Sep American Airlines
23 Sep - 30 Sep Lufthansa
08 Sep - 15 Sep Lufthansa
01 Sep - 08 Sep Lufthansa
24 Sep - 01 Oct Austrian Airlines
28 Sep - 05 Oct Scandinavian Airlines
26 Sep - 03 Oct Lufthansa

Also check the deals for one-way flights from Boston to Oslo in September.

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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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