Cheapest return flights from Boston to Keflavik in March from $338

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

Return flights

07 Mar - 13 Mar Icelandair direct
11 Mar - 19 Mar Icelandair direct
21 Mar - 11 Apr Icelandair direct
20 Mar - 27 Mar Icelandair direct
16 Mar - 23 Mar Icelandair direct
21 Mar - 28 Mar Icelandair direct
19 Mar - 27 Mar Icelandair direct
12 Mar - 16 Mar Icelandair direct
11 Mar - 21 Mar Icelandair direct
11 Mar - 18 Mar Icelandair direct
06 Mar - 16 Mar Icelandair direct
26 Mar - 02 Apr Icelandair direct
11 Mar - 04 Apr Icelandair direct
09 Mar - 04 Apr Icelandair direct
31 Mar - 07 Apr Icelandair direct

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

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