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

Return flights

13 Feb - 20 Feb	Icelandair	direct
15 Feb - 22 Feb	Icelandair	direct
16 Feb - 23 Feb	Icelandair	direct
18 Feb - 25 Feb	Icelandair	direct
20 Feb - 27 Feb	Icelandair	direct
17 Feb - 24 Feb	British Airways
19 Feb - 26 Feb	British Airways
05 Feb - 10 Feb	Lufthansa
12 Feb - 19 Feb	Sun Country Airlines
06 Feb - 11 Feb	Icelandair

Also check the deals for one-way flights from Denver 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 Denver to Keflavik in February from 423€

Return flights