Cheapest return flights from Boston to Keflavik in August from $412

AirHint found the following cheapest return flights from Boston (BOS) to Keflavik (KEF) in August 2026 (see full year).

Return flights

29 Aug - 09 Sep Icelandair direct
27 Aug - 01 Sep Icelandair direct
11 Aug - 20 Aug Air Canada
16 Aug - 23 Aug Icelandair direct
11 Aug - 18 Aug Air Canada
10 Aug - 19 Aug Air Canada
04 Aug - 19 Aug SWISS
11 Aug - 20 Aug Icelandair direct
03 Aug - 10 Aug Icelandair direct
04 Aug - 11 Aug Icelandair direct
11 Aug - 18 Aug Icelandair direct
08 Aug - 28 Aug SWISS

Also check the deals for one-way flights from Boston to Keflavik in August.

Powered by

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.