Cheapest return flights from Boston to Keflavik in March from $399

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

Return flights

11 Mar - 19 Mar Lufthansa
13 Mar - 21 Mar Icelandair direct
07 Mar - 15 Mar Icelandair direct
11 Mar - 19 Mar Icelandair direct
19 Mar - 27 Mar Icelandair direct
17 Mar - 25 Mar Icelandair direct
02 Mar - 09 Mar Icelandair direct

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

Skyscanner

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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