Cheapest return flights from Washington to Keflavik in October from 531€

Best time to book flights for Washington (IAD) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Washington (IAD) to Keflavik (KEF) in October 2025 (see full year).

Return flights

10 Oct - 15 Oct Icelandair direct
19 Oct - 23 Oct Icelandair direct

Also check the deals for one-way flights from Washington to Keflavik in October.

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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