Cheapest one-way flights from Washington to Keflavik in October from 253€

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

One-Way flights

15 Oct Scandinavian Airlines
12 Oct Frontier Airlines
21 Oct TAP
02 Oct Frontier Airlines
12 Oct Icelandair direct
17 Oct Virgin Atlantic
16 Oct Allegiant Air
15 Oct Icelandair direct
03 Oct Icelandair direct
02 Oct Icelandair direct

Also check the deals for return 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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