When is the Bangkok to Surabaya 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 BKK to SUB route?

The BKK–SUB route is typically operated by Airbus A320 · Boeing 737. Airlines include Singapore Airlines, AirAsia, Thai Airways.

Is turbulence on BKK to SUB dangerous?

No — turbulence on the BKK–SUB 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 BKK to SUB flight?

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

BKK to SUB Turbulence Forecast

Q: Is the Bangkok to Surabaya flight turbulent?

The BKK–SUB route typically experiences light turbulence. Light turbulence may occur — mostly smooth with occasional bumps.

Q: Which seat is smoothest on BKK to SUB?

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

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

The BKK to SUB flight takes approximately 4h 00m, covering 1,673 miles (1,454 nautical miles) at a cruising altitude of 35,000 feet.

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

Live forecast

BKK

→

SUB

Bangkok · Surabaya · 4h 00m

34.0

Turb Score

4h 00m

Duration

1,454 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 BKK–SUB

0h1h2h3h4h5h6h4h 00m

Smooth

Light

Moderate

Heavy

About the BKK–SUB route

The Bangkok 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 1,673 miles (1,454 nautical miles).

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

Bangkok to Surabaya Flight Time

How long is the flight from BKK to SUB?

4h 00m

Flight Time

1,673 mi

Distance

35,000 ft

Cruising Altitude

Airbus A320

Aircraft

The Bangkok (BKK) to Surabaya (SUB) flight takes approximately 4h 00m, covering 1,673 miles (1,454 nautical miles) at 35,000 feet. The route is operated by Singapore Airlines, AirAsia, Thai Airways. Return flights (SUB to BKK) take a similar time, though westbound transatlantic and transpacific routes are typically 30–60 minutes longer due to headwinds.

Turbulence levels on BKK–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

Get minute-by-minute timing for your specific flight

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Best time to fly BKK–SUB

Turbulence by month

Smooth

Light

Moderate

Rough

Best seat on BKK–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

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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

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Passenger Reports

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

First-time flyer · April

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

Regular traveler · September

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

Business traveler · January

All BKK routes→ All SUB routes→

Frequently asked questions

Is the Bangkok to Surabaya flight turbulent?

The BKK–SUB route typically experiences light turbulence. Light turbulence may occur — mostly smooth with occasional bumps. The turbulence score for this route is 34.0/100.

When is turbulence worst on BKK 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 BKK 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 BKK to SUB?

The BKK to SUB flight takes approximately 4h 00m, covering 1,673 miles (1,454 nautical miles).

Which airlines fly BKK 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