Cheapest return flights from Boston to Oslo in May from $435

AirHint found the following cheapest return flights from Boston (BOS) to Oslo (OSL) in May 2026 (see full year).

Return flights

10 May - 14 May Air Canada
11 May - 16 May SWISS
18 May - 25 May Scandinavian Airlines
03 May - 10 May Scandinavian Airlines
08 May - 15 May Icelandair
28 May - 04 Jun Scandinavian Airlines
23 May - 30 May Scandinavian Airlines

Also check the deals for one-way flights from Boston 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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