Cheapest return flights from Boston to Keflavik in May from 291€

Best time to book flights for Boston (BOS) to Keflavik (KEF) flights at AirHint

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

Return flights

09 May - 16 May Fly Play direct
12 May - 19 May Fly Play direct
14 May - 21 May Fly Play direct
02 May - 09 May Fly Play direct
06 May - 13 May Fly Play direct
03 May - 10 May Fly Play direct
04 May - 13 May Fly Play direct
28 May - 04 Jun Fly Play direct
01 May - 08 May Fly Play direct
13 May - 20 May Fly Play direct
27 May - 03 Jun Fly Play direct
07 May - 14 May Fly Play direct
25 May - 01 Jun Fly Play direct
26 May - 02 Jun Fly Play direct
27 May - 02 Jun Fly Play direct
31 May - 08 Jun Fly Play direct

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

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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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