Cheapest return flights from Boston to Keflavik in May from $406

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

Return flights

11 May - 14 May Delta
17 May - 31 May Icelandair direct
11 May - 16 May Icelandair direct

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

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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