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 2026 (see full year).

Return flights

07 Sep - 14 Sep Air France
13 Sep - 20 Sep Air France
11 Sep - 18 Sep Air France
14 Sep - 21 Sep Air France
24 Sep - 01 Oct Air France
28 Sep - 05 Oct Air France
29 Sep - 06 Oct Air France
30 Sep - 07 Oct Air France
03 Sep - 08 Sep Icelandair
23 Sep - 30 Sep KLM
01 Sep - 08 Sep KLM
02 Sep - 09 Sep KLM
08 Sep - 15 Sep KLM
09 Sep - 16 Sep KLM
25 Sep - 02 Oct KLM
27 Sep - 04 Oct Icelandair
26 Sep - 03 Oct Icelandair

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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