Cheapest return flights from Boston to Keflavik in May from 337€

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

Return flights

13 May - 03 Jun Icelandair direct
31 May - 07 Jun Icelandair direct
24 May - 31 May Icelandair direct
13 May - 17 May Icelandair direct
21 May - 28 May Icelandair direct
23 May - 31 May Icelandair direct
11 May - 21 May Icelandair direct
22 May - 25 May Icelandair direct
21 May - 25 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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