Cheapest return flights from Boston to Keflavik in March from $426

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

Return flights

27 Mar - 10 Apr Icelandair direct
09 Mar - 16 Mar Icelandair direct
24 Mar - 07 Apr Icelandair direct
29 Mar - 05 Apr Air France
04 Mar - 11 Mar Icelandair direct
14 Mar - 21 Mar Icelandair direct
18 Mar - 25 Mar Icelandair direct
19 Mar - 26 Mar Icelandair direct
20 Mar - 27 Mar Icelandair direct
25 Mar - 01 Apr Icelandair direct
26 Mar - 02 Apr Icelandair direct
27 Mar - 03 Apr Icelandair direct
28 Mar - 04 Apr Icelandair direct
24 Mar - 31 Mar Icelandair direct
29 Mar - 05 Apr Icelandair direct
30 Mar - 06 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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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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