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

Return flights

24 Mar - 31 Mar	Icelandair
04 Mar - 11 Mar	Icelandair
09 Mar - 16 Mar	TAP
31 Mar - 07 Apr	Air France
18 Mar - 29 Mar	Air France
01 Mar - 08 Mar	Air France
03 Mar - 10 Mar	Air France
08 Mar - 15 Mar	Air France
23 Mar - 30 Mar	Air France
16 Mar - 23 Mar	Air France
17 Mar - 24 Mar	Air France
30 Mar - 06 Apr	Scandinavian Airlines
26 Mar - 02 Apr	KLM
28 Mar - 04 Apr	KLM
27 Mar - 03 Apr	Air France

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

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 March from $423

Return flights