Cheapest one-way flights from Washington to Keflavik in August from 205€

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

One-Way flights

30 Aug Frontier Airlines
21 Aug Frontier Airlines
30 Aug Icelandair direct
18 Aug Icelandair direct
19 Aug Icelandair direct
31 Aug Icelandair direct
17 Aug Icelandair direct
20 Aug Icelandair direct
21 Aug Icelandair direct
28 Aug Allegiant Air

Also check the deals for return flights from Washington 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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