Cheapest return flights from Seattle to Keflavik in August from 598€

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

Return flights

17 Aug - 24 Aug Icelandair direct
18 Aug - 25 Aug Icelandair direct
19 Aug - 26 Aug Icelandair direct
20 Aug - 27 Aug Icelandair direct
21 Aug - 28 Aug Icelandair direct
22 Aug - 29 Aug Icelandair direct
23 Aug - 30 Aug Icelandair direct
18 Aug - 24 Aug Icelandair direct
13 Aug - 20 Aug Icelandair direct
12 Aug - 19 Aug Icelandair direct

Also check the deals for one-way flights from Seattle 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.