Cheapest return flights from Boston to Keflavik in December from 254€

AirHint found the following cheapest return flights from Boston (BOS) to Keflavik (KEF) in December 2025 (see full year).

Return flights

07 Dec - 14 Dec Icelandair direct
03 Dec - 10 Dec Icelandair direct
08 Dec - 15 Dec Icelandair direct
02 Dec - 09 Dec Icelandair direct
04 Dec - 08 Dec Icelandair direct
05 Dec - 08 Dec Icelandair direct
05 Dec - 09 Dec Icelandair direct
12 Dec - 19 Dec Icelandair direct
12 Dec - 21 Dec Icelandair direct
13 Dec - 20 Dec Icelandair direct
18 Dec - 08 Jan Icelandair direct
28 Dec - 04 Jan Icelandair direct
09 Dec - 03 Jan Icelandair direct
23 Dec - 01 Jan Icelandair direct
31 Dec - 03 Jan Lufthansa
26 Dec - 01 Jan Icelandair direct
27 Dec - 03 Jan Icelandair direct

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

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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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