Cheapest one-way flights from Boston to Keflavik in September from 158€

AirHint found the following cheapest one-way flights from Boston (BOS) to Keflavik (KEF) in September 2025 (see full year).

One-Way flights

01 Sep Fly Play direct
15 Sep Fly Play direct
13 Sep Fly Play direct
03 Sep Fly Play direct
07 Sep Spirit Airlines
23 Sep WestJet
22 Sep Spirit Airlines
07 Sep Icelandair direct
09 Sep United
09 Sep Icelandair direct

Also check the deals for return flights from Boston to Keflavik in September.

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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