Cheapest one-way flights from Washington to Oslo in May from $359

Best time to book flights for Washington (IAD) to Oslo (OSL) flights at AirHint

AirHint found the following cheapest one-way flights from Washington (IAD) to Oslo (OSL) in May 2025 (see full year).

One-Way flights

18 May Frontier Airlines
13 May Icelandair
14 May Icelandair
20 May TAP
19 May TAP
17 May Porter Airlines (Canada) Ltd
16 May SWISS
12 May Austrian Airlines
15 May Turkish Airlines
22 May Porter Airlines (Canada) Ltd

Also check the deals for return flights from Washington to Oslo in May.

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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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