Cheapest one-way flights from Boston to Keflavik in August from $164

Best time to book flights for Boston (BOS) to Keflavik (KEF) flights at AirHint

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

One-Way flights

13 Aug Fly Play direct

Also check the deals for return flights from Boston to Keflavik 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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