Cheapest return flights from Boston to Keflavik in September from 345€

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

Return flights

30 Sep - 07 Oct Icelandair direct
10 Sep - 20 Sep Icelandair direct
08 Sep - 15 Sep Icelandair direct
25 Sep - 07 Oct Icelandair direct
10 Sep - 24 Sep Icelandair direct
05 Sep - 12 Sep Icelandair direct
15 Sep - 22 Sep Icelandair direct
18 Sep - 25 Sep Icelandair direct
17 Sep - 25 Sep Virgin Atlantic
17 Sep - 25 Sep Icelandair direct
09 Sep - 11 Sep Icelandair direct

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

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