Cheapest one-way flights from Keflavik to Boston in August from $231

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

One-Way flights

29 Aug Fly Play direct
01 Aug Fly Play direct
11 Aug Fly Play direct
10 Aug Fly Play direct
24 Aug Fly Play direct
13 Aug Fly Play direct
30 Aug Icelandair direct
02 Aug Icelandair direct
14 Aug Icelandair direct

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

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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