Cheapest return flights from Boston to Keflavik in May from $452

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

Return flights

25 May - 31 May Icelandair direct
23 May - 30 May Icelandair direct
30 May - 07 Jun Icelandair direct
05 May - 12 May Icelandair direct

Also check the deals for one-way flights from Boston to Keflavik 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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