CMB to LHR Turbulence Forecast

Q: Is the Colombo to London flight turbulent?

The CMB–LHR route typically experiences moderate turbulence. A very smooth flight with minimal turbulence expected.

Q: Which seat is smoothest on CMB to LHR?

Wing seats are smoothest. On a Boeing 787-9, that's rows 21-32. Avoid the rear of the aircraft.

Q: How long is the flight from CMB to LHR?

The CMB to LHR flight takes approximately 10h 30m.

Is the Colombo to London flight turbulent? Live forecast & historical patterns.

Live forecast

CMB

→

LHR

Colombo · London · 10h 30m

Turb Score

10h 30m

Duration

5,540 nm

Distance

39,000 ft

Cruise Alt.

Moderate

Typical

⚠️ Moderate turbulence today

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Typical turbulence along the route

Historical average pattern for CMB–LHR

0h1h2h3h4h5h6h10h 30m

Smooth

Light

Moderate

Heavy

About the CMB–LHR route

The Colombo to London route heads southeast over Europe and the Middle East, covering 6,378 miles at 39,000 feet. This corridor is generally smooth — turbulence is most common over the Alps and occasionally over the Zagros Mountains in Iran. The approach into Dubai crosses dry, stable desert air which is typically calm.

The route is served by SriLankan Airlines, British Airways on Airbus A330 · Boeing 787 aircraft, with flights typically cruising at 39,000 feet over a distance of 6,378 miles (5,540 nautical miles).

💡 Tip: Generally smooth. Mountain ranges over Europe/Iran can cause brief turbulence.

Turbulence levels on CMB–LHR

What to expect at each phase of the flight

SmoothDeparture & arrival — climb and descent phases are generally calm

LightMinor bumps — drink stays in your cup, walking feels slightly unsteady

ModerateNoticeable bumps — stay seated with seatbelt on, service may pause

HeavyStrong jolts — unsecured items move, crew seated. Rare but possible

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Best time to fly CMB–LHR

Turbulence by month

Smooth

Light

Moderate

Rough

Best seat on CMB–LHR

Boeing 787-9

Front

Rows 1–20

Light

✓ Wing

Rows 21-32

Smoothest

Rear

Rows 33+

Rougher

Wing seats are over the center of gravity — least affected by turbulence.

What you'll see in the app

Full forecast, live map & seat recommendations

Similar routes

Other popular routes with turbulence data

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Frequently asked questions

Is the Colombo to London flight turbulent?

The CMB–LHR route typically experiences moderate turbulence. A very smooth flight with minimal turbulence expected. The turbulence score for this route is 10/100.

When is turbulence worst on CMB to LHR?

Generally smooth. Mountain ranges over Europe/Iran can cause brief turbulence. Check the turbulence chart above for the typical pattern along this specific route.

Which seat is smoothest on CMB to LHR?

Wing seats are always the smoothest. On a Boeing 787-9 (the most common aircraft on this route), that's rows 21-32. Avoid the very rear of the aircraft — it amplifies turbulence motion.

How long is the flight from CMB to LHR?

The CMB to LHR flight takes approximately 10h 30m, covering 6,378 miles (5,540 nautical miles).

Which airlines fly CMB to LHR?

The main airlines operating this route are SriLankan Airlines, British Airways, flying Airbus A330 · Boeing 787 aircraft.

Data Sources

PIREP — Pilot reports (PIREPs) submitted via FAA/ICAO systems, aggregated over 12+ months of historical data
SIGMET / AIRMET — Significant Meteorological Information bulletins from NOAA Aviation Weather Center
EDR data — Eddy Dissipation Rate measurements from commercial aircraft (ADS-B derived turbulence intensity)
Seasonal patterns — 5-year rolling averages of turbulence frequency and intensity by month for this route

Scores represent typical conditions. Actual turbulence varies daily. For real-time forecasts, use the Turbulence Forecast app. · About our data