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

Return flights

09 Dec - 17 Dec	Icelandair
02 Dec - 09 Dec	Icelandair
10 Dec - 17 Dec	Icelandair
03 Dec - 10 Dec	Icelandair
09 Dec - 16 Dec	Austrian Airlines
07 Dec - 14 Dec	Austrian Airlines
08 Dec - 15 Dec	Lufthansa
05 Dec - 12 Dec	TAP
04 Dec - 07 Dec	Air Canada
11 Dec - 18 Dec	Icelandair
17 Dec - 10 Jan	Icelandair
29 Dec - 24 Jan	Icelandair
31 Dec - 07 Jan	Icelandair
16 Dec - 10 Jan	British Airways
28 Dec - 17 Jan	TAP
23 Dec - 01 Jan	Finnair
11 Dec - 03 Jan	Icelandair
18 Dec - 10 Jan	Spirit Airlines
29 Dec - 05 Jan	Scandinavian Airlines
25 Dec - 01 Jan	Scandinavian Airlines

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

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 Boston to Oslo in December from $389

Return flights