Cheapest return flights from Boston to Keflavik in October from $273

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 October 2025 (see full year).

Return flights

09 Oct - 17 Oct Fly Play direct
15 Oct - 23 Oct Fly Play direct
12 Oct - 25 Oct Fly Play direct
05 Oct - 18 Oct Fly Play direct
08 Oct - 12 Oct Fly Play direct
20 Oct - 02 Nov Icelandair direct
12 Oct - 02 Nov Icelandair direct
21 Oct - 01 Nov Icelandair direct
21 Oct - 06 Nov Icelandair direct
25 Oct - 06 Nov Icelandair direct
26 Oct - 08 Nov British Airways
20 Oct - 08 Nov British Airways
25 Oct - 09 Nov British Airways
26 Oct - 08 Nov Icelandair direct
20 Oct - 08 Nov Icelandair direct

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

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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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