AirHint found the following cheapest return flights from Washington (IAD) to Keflavik (KEF) in February 2026 (see full year).

Return flights

10 Feb - 20 Feb	Icelandair	direct
23 Feb - 28 Feb	Icelandair	direct
21 Feb - 28 Feb	Icelandair	direct
09 Feb - 13 Feb	Icelandair	direct
09 Feb - 19 Feb	Icelandair	direct
17 Feb - 25 Feb	Icelandair	direct
20 Feb - 26 Feb	Icelandair	direct
17 Feb - 22 Feb	Icelandair	direct
20 Feb - 22 Feb	Icelandair	direct
19 Feb - 22 Feb	Icelandair	direct
26 Feb - 06 Mar	Lufthansa
13 Feb - 16 Mar	Frontier Airlines
13 Feb - 15 Mar	Frontier Airlines

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

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 February from 363€

Return flights