AirHint found the following cheapest return flights from Washington (IAD) to Oslo (OSL) in January 2026 (see full year).

Return flights

24 Jan - 30 Jan	Icelandair
12 Jan - 19 Jan	Scandinavian Airlines
21 Jan - 28 Jan	Scandinavian Airlines
26 Jan - 02 Feb	Scandinavian Airlines
28 Jan - 04 Feb	Scandinavian Airlines
29 Jan - 05 Feb	Scandinavian Airlines
07 Jan - 14 Jan	Icelandair
10 Jan - 17 Jan	Icelandair
13 Jan - 20 Jan	Icelandair
16 Jan - 23 Jan	Icelandair
19 Jan - 26 Jan	Icelandair
22 Jan - 29 Jan	Icelandair
05 Jan - 31 Jan	British Airways
27 Jan - 03 Feb	Icelandair

Also check the deals for one-way flights from Washington to Oslo in January.

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 Washington to Oslo in January from $401

Return flights