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Flights between Denver (DEN) and Keflavik (KEF)

Denver International Airport, United States ↔ Keflavik International Airport, Iceland

A direct route between Denver and Keflavik appears in the OpenFlights route network.

This reflects historical scheduled service and may be out of date — it is not a live timetable.

Airlines that have operated this route include:

FI
Distance
5,727 km
3,559 miles
Est. flight time
7h 40m
great-circle estimate
Time difference
~7h
varies with DST
View this route on the live map →Search fares on Skyscanner ↗

Climate

Typical monthly temperatures in United States

Jan
4°
9/-1
70mm
Feb
6°
11/1
60mm
Mar
11°
16/6
75mm
Apr
17°
22/12
80mm
May
23°
28/18
95mm
Jun
28°
33/23
100mm
Jul
30°
35/25
95mm
Aug
29°
34/24
90mm
Sep
25°
30/20
80mm
Oct
18°
23/13
70mm
Nov
11°
16/6
70mm
Dec
5°
10/0
75mm

Mean °C (high/low below), avg. rainfall mm · country-level monthly normals, not airport-specific.

Typical monthly temperatures in Iceland

Jan
3°
8/-2
80mm
Feb
3°
8/-2
70mm
Mar
4°
9/-1
80mm
Apr
6°
11/1
60mm
May
9°
14/4
50mm
Jun
13°
18/8
50mm
Jul
14°
19/9
55mm
Aug
14°
19/9
65mm
Sep
11°
16/6
80mm
Oct
7°
12/2
90mm
Nov
4°
9/-1
80mm
Dec
3°
8/-2
90mm

Mean °C (high/low below), avg. rainfall mm · country-level monthly normals, not airport-specific.

Travel advisories

United States: Normal precautions (UK FCDO) ↗Iceland: Normal precautions (UK FCDO) ↗

Common questions

How far is Denver from Keflavik?

Denver (DEN) and Keflavik (KEF) are around 5,727 km (3,559 miles) apart — an estimated 7h 40m by air. Distances and flight times are great-circle estimates.

Which airlines have operated the DEN–KEF route?

Airlines recorded operating this route in the OpenFlights network include FI. This reflects historical scheduled service and may be out of date.

What is the time difference between Denver and Keflavik?

Time difference ~ 7 hours (varies with daylight-saving).

When is it warmest in Iceland?

Across Iceland, the warmest month on average is July, with mean temperatures around 14°C. These are country-level monthly climate normals, not airport-specific.

Are there travel advisories for United States and Iceland?

The UK FCDO currently rates United States as Normal precautions; The UK FCDO rates Iceland as Normal precautions. Check the official sources before you travel.

Distances and flight times are great-circle estimates, not booked block times.