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

Return flights

06 Nov - 13 Nov	Icelandair	direct
27 Nov - 04 Dec	Icelandair	direct
03 Nov - 08 Nov	Icelandair	direct
13 Nov - 20 Nov	Icelandair	direct
14 Nov - 21 Nov	Icelandair	direct
15 Nov - 22 Nov	Icelandair	direct
16 Nov - 23 Nov	Icelandair	direct
28 Nov - 05 Dec	Icelandair	direct
30 Nov - 07 Dec	Icelandair	direct
20 Nov - 27 Nov	Icelandair	direct
22 Nov - 27 Nov	Icelandair	direct

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

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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Cheapest return flights from Washington to Keflavik in November from $300

Return flights