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✈️ London (LHR) ⇄ Keflavik (KEF): turbulence forecast

Checking whether your LHR–KEF flight will be bumpy? RideScore samples the live forecast winds at cruise altitude along the actual London–Keflavik route and scores every leg of the flight, in plain English.

Live forecast LHR → KEF KEF → LHR
Distance1,895 km / 1,177 mi
Est. flight time~2h 44m
Time difference1h time behind at KEF
AirportsLondon Heathrow · Keflavik Intl

What makes this route bumpy (or not)

Turbulence here mostly depends on the day's winds aloft — where the fast air sits and how sharply it changes with altitude. That's exactly what the live forecast checks.

How the forecast works

RideScore reads the same global weather models professionals use (NOAA GFS / ECMWF via Open-Meteo), computes wind shear, jet-stream strength and storm energy at up to 11 points along the LHR–KEF great-circle, and turns it into a simple 0–10 bumpiness score for each leg of your flight — plus recent pilot reports from aircraft that just flew nearby. It's free, with no account and no tracking, and works up to 16 days ahead.

Common questions

Is the LHR to KEF flight usually turbulent?
It varies day to day with the winds aloft. Turbulence here mostly depends on the day's winds aloft — where the fast air sits and how sharply it changes with altitude. That's exactly what the live forecast checks. Check the live forecast on RideScore just before you fly — it samples the actual forecast winds along the London–Keflavik route at cruise altitude.
How long is the flight from London to Keflavik?
The great-circle distance is about 1,895 km (1,177 miles), which works out to roughly 2h 44m in the air depending on winds and routing.
Is turbulence on this route dangerous?
No — turbulence is uncomfortable, not dangerous to the aircraft. Modern jets are built for far worse than anything encountered in normal service, and pilots route around the roughest air. Keep your seatbelt fastened and it is a non-event.

More routes from London (LHR) · More routes from Keflavik (KEF)

This page shows typical route characteristics; conditions on your day will differ — run the live forecast. Estimates only, not an aviation weather briefing. © 2026 RideScore · made with ❤️ in Amsterdam · About · Terms