When is the Kolkata to London route most turbulent?

See the monthly chart above for exact patterns. Transatlantic and mountain routes are typically roughest in winter (Dec–Mar). Tropical and Caribbean routes peak during monsoon season (Jul–Sep).

What aircraft operates the CCU to LHR route?

The CCU–LHR route is typically operated by Boeing 787 · Airbus A350. Airlines include Air India, British Airways, Vistara.

Is turbulence on CCU to LHR dangerous?

No — turbulence on the CCU–LHR route is not dangerous to the aircraft. Modern commercial aircraft are built to withstand far more stress than any turbulence encountered. The main risk is to unbelted passengers. Always keep your seatbelt fastened when seated.

How can I check turbulence before my CCU to LHR flight?

Use the Turbulence Forecast app (iOS & Android) for real-time PIREPs, SIGMET alerts, and AI-powered forecasts for the CCU–LHR route. The app shows minute-by-minute turbulence timing for your specific flight date.

CCU to LHR Turbulence Forecast

Q: Is the Kolkata to London flight turbulent?

The CCU–LHR route typically experiences light-to-moderate turbulence. A very smooth flight with minimal turbulence expected.

Q: Which seat is smoothest on CCU to LHR?

Wing seats are smoothest. On a Boeing 787 · Airbus A350, that's rows 25-38. Avoid the rear of the aircraft where turbulence is felt most.

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

The CCU to LHR flight takes approximately 11h 30m, covering 6,456 miles (5,610 nautical miles) at a cruising altitude of 39,000 feet.

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

Live forecast

CCU

→

LHR

Kolkata · London · 11h 30m

Turb Score

11h 30m

Duration

5,610 nm

Distance

39,000 ft

Cruise Alt.

Light-to-Moderate

Typical

⚠️ Light-to-Moderate turbulence today

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Typical turbulence along the route

Historical average pattern for CCU–LHR

0h1h2h3h4h5h6h11h 30m

Smooth

Light

Moderate

Heavy

About the CCU–LHR route

The Kolkata to London route crosses the North Atlantic, where the jet stream is the primary source of turbulence. Flying at 39,000 feet, the aircraft encounters the strongest bumps roughly 2–5 hours into the flight. This is clear-air turbulence — no clouds, no visual warning — which makes a pre-flight forecast especially valuable.

The route is served by Air India, British Airways, Vistara on Boeing 787 · Airbus A350 aircraft, with flights typically cruising at 39,000 feet over a distance of 6,456 miles (5,610 nautical miles).

💡 Tip: Turbulence peaks mid-flight over the Atlantic. First and last hour are usually smooth.

Kolkata to London Flight Time

How long is the flight from CCU to LHR?

11h 30m

Flight Time

6,456 mi

Distance

39,000 ft

Cruising Altitude

Boeing 787

Aircraft

The Kolkata (CCU) to London (LHR) flight takes approximately 11h 30m, covering 6,456 miles (5,610 nautical miles) at 39,000 feet. The route is operated by Air India, British Airways, Vistara. Return flights (LHR to CCU) take a similar time, though westbound transatlantic and transpacific routes are typically 30–60 minutes longer due to headwinds.

Turbulence levels on CCU–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

Get minute-by-minute timing for your specific flight

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Best time to fly CCU–LHR

Turbulence by month

Smooth

Light

Moderate

Rough

Best seat on CCU–LHR

Boeing 787-9

Front

Rows 1–24

Light

✓ Wing

Rows 25-38

Smoothest

Rear

Rows 39+

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

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Other popular routes with turbulence data

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Best Seat Guide

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Clear-Air Turbulence

The invisible rough air that's increasing

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Turbulence in 2025

Is turbulence getting worse?

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Turbulence Forecast Map

Global turbulence outlook

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Passenger Reports

Some light chop over the Atlantic — seatbelt sign came on for maybe 20 minutes but nothing to worry about. Typical for this route in January.

Regular traveler · January

The 11h 30m flight had some light shaking around the halfway point. Nothing spilled, nobody panicked. Just normal flying.

Leisure traveler · December

A few bumpy patches somewhere over Greenland, lasted maybe half an hour total. Drink service was paused briefly. Not unusual for this time of year.

Frequent flyer · March

All CCU routes→ All LHR routes→

Frequently asked questions

Is the Kolkata to London flight turbulent?

The CCU–LHR route typically experiences light-to-moderate turbulence. A very smooth flight with minimal turbulence expected. The turbulence score for this route is 11/100.

When is turbulence worst on CCU to LHR?

Turbulence peaks mid-flight over the Atlantic. First and last hour are usually smooth. Check the turbulence chart above for the typical pattern along this specific route.

Which seat is smoothest on CCU to LHR?

Wing seats are always the smoothest. On a Boeing 787-9 (the most common aircraft on this route), that's rows 25-38. Avoid the very rear of the aircraft — it amplifies turbulence motion.

How long is the flight from CCU to LHR?

The CCU to LHR flight takes approximately 11h 30m, covering 6,456 miles (5,610 nautical miles).

Which airlines fly CCU to LHR?

The main airlines operating this route are Air India, British Airways, Vistara, flying Boeing 787 · Airbus A350 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