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

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

One-Way flights

27 Aug Fly Play direct
20 Aug Fly Play direct
18 Aug Fly Play direct
22 Aug Fly Play direct
30 Aug Spirit Airlines
29 Aug Spirit Airlines
17 Aug Fly Play direct
29 Aug Fly Play direct
28 Aug Frontier Airlines
30 Aug Icelandair 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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik

Feel free to contact us with any feedback or request another flight research.