When is the Kuala Lumpur to Surabaya route most turbulent?

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

KUL to SUB Turbulence Forecast

Q: Is the Kuala Lumpur to Surabaya flight turbulent?

The KUL–SUB route typically experiences light turbulence.

Q: Which seat is smoothest on KUL to SUB?

Wing seats are smoothest. On a Airbus A320 · Boeing 737, that's rows 10–20. Avoid the rear of the aircraft.

Q: How long is the flight from KUL to SUB?

The KUL to SUB flight takes approximately 2h 40m, covering 1,036 miles at 35,000 feet.

Is the Kuala Lumpur to Surabaya flight turbulent? Live forecast & historical patterns.

Live forecast

KUL

→

SUB

Kuala Lumpur · Surabaya · 2h 40m

26.8

Turb Score

2h 40m

Duration

900 nm

Distance

35,000 ft

Cruise Alt.

Light

Typical

⚠️ Light turbulence today

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Typical turbulence along the route

Historical average pattern for KUL–SUB

0h1h2h3h4h5h6h2h 40m

Smooth

Light

Moderate

Heavy

About the KUL–SUB route

The Kuala Lumpur to Surabaya route crosses the North Atlantic, where the jet stream is the primary source of turbulence. Flying at 35,000 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 Singapore Airlines, AirAsia, Thai Airways on Airbus A320 · Boeing 737 aircraft, with flights typically cruising at 35,000 feet over a distance of 1,036 miles (900 nautical miles).

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

Kuala Lumpur to Surabaya Flight Time

How long is the flight from KUL to SUB?

2h 40m

Flight Time

1,036 mi

Distance

35,000 ft

Cruising Altitude

Airbus A320

Aircraft

The Kuala Lumpur (KUL) to Surabaya (SUB) flight takes approximately 2h 40m, covering 1,036 miles (900 nautical miles) at 35,000 feet. The route is operated by Singapore Airlines, AirAsia, Thai Airways. Return flights (SUB to KUL) take a similar time, though westbound transatlantic and transpacific routes are typically 30–60 minutes longer due to headwinds.

Turbulence levels on KUL–SUB

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 KUL–SUB

Turbulence by month

Smooth

Light

Moderate

Rough

Best seat on KUL–SUB

Airbus A320

Front

Rows 1–9

Light

✓ Wing

Rows 10–20

Smoothest

Rear

Rows 21+

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

SUB → KUL

Surabaya → Kuala Lumpur

Light

KUL → SIN

Kuala Lumpur → Singapore

light-moderate

KUL → CGK

Kuala Lumpur → Jakarta

See all transatlantic flights →

Related guides

Learn more about flight turbulence

Turbulence Tracker

Track any flight in real time

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Best Seat Guide

Which rows feel turbulence least

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Turbulence Forecast Map

Global turbulence outlook

→

Passenger Reports

Flew Kuala Lumpur–Surabaya in April, had some light turbulence in the middle portion of the flight. Brief and nothing concerning. This route is usually fine.

Business traveler · April

There was some noticeable movement mid-flight that made me grip the armrest. My seatmate (clearly a regular) didn't even look up from their book. Perspective.

First-time flyer · March

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

Frequent flyer · January

All KUL routes→ All SUB routes→

Frequently asked questions

Is the Kuala Lumpur to Surabaya flight turbulent?

The KUL–SUB route typically experiences light turbulence. The turbulence score for this route is 26.8/100.

When is turbulence worst on KUL to SUB?

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 KUL to SUB?

Wing seats are always the smoothest. On a Airbus A320 (the most common aircraft on this route), that's rows 10–20. Avoid the very rear of the aircraft — it amplifies turbulence motion.

How long is the flight from KUL to SUB?

The KUL to SUB flight takes approximately 2h 40m, covering 1,036 miles (900 nautical miles).

Which airlines fly KUL to SUB?

The main airlines operating this route are Singapore Airlines, AirAsia, Thai Airways, flying Airbus A320 · Boeing 737 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