Cheapest return flights from Keflavik to Boston in March from $410

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

Return flights

18 Mar - 25 Mar Icelandair direct
12 Mar - 19 Mar Icelandair direct
26 Mar - 11 Apr Icelandair direct
30 Mar - 07 Apr Icelandair direct
14 Mar - 19 Mar Icelandair direct
12 Mar - 18 Mar Icelandair direct

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

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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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