Cheapest one-way flights from Boston to Keflavik in September from 100€

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

One-Way flights

15 Sep Fly Play direct
03 Sep Fly Play direct
06 Sep Fly Play direct
10 Sep Fly Play direct
13 Sep Fly Play direct
05 Sep Fly Play direct
08 Sep Fly Play direct
24 Sep Spirit Airlines
21 Sep Spirit Airlines
21 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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