Cheapest return flights from Denver to Keflavik in December from 358€
AirHint found the following cheapest return flights from Denver (DEN) to Keflavik (KEF)
in December 2025 (see full year ).
Return flights
01 Dec
- 08 Dec
Icelandair
358 €
direct
02 Dec
- 09 Dec
Icelandair
358 €
direct
03 Dec
- 10 Dec
Icelandair
358 €
direct
04 Dec
- 11 Dec
Icelandair
358 €
direct
08 Dec
- 15 Dec
Icelandair
358 €
direct
09 Dec
- 16 Dec
Icelandair
368 €
direct
12 Dec
- 19 Dec
Icelandair
368 €
direct
14 Dec
- 21 Dec
Icelandair
369 €
direct
05 Dec
- 12 Dec
Icelandair
423 €
direct
06 Dec
- 13 Dec
Icelandair
423 €
direct
30 Dec
- 06 Jan
Icelandair
488 €
direct
29 Dec
- 06 Jan
Icelandair
488 €
direct
31 Dec
- 08 Jan
British Airways
512 €
28 Dec
- 05 Jan
Icelandair
556 €
direct
31 Dec
- 07 Jan
British Airways
580 €
30 Dec
- 07 Jan
British Airways
580 €
24 Dec
- 01 Jan
Icelandair
585 €
direct
27 Dec
- 04 Jan
Icelandair
624 €
direct
27 Dec
- 03 Jan
Icelandair
658 €
direct
26 Dec
- 03 Jan
Sun Country Airlines
846 €
Also check the deals for one-way flights from Denver to Keflavik in December .
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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