When is the Tokyo to Singapore 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 HND to SIN route?

The HND–SIN route is typically operated by Boeing 787 · Airbus A350. Airlines include Singapore Airlines, Japan Airlines, ANA.

Is turbulence on HND to SIN dangerous?

No — turbulence on the HND–SIN 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 HND to SIN flight?

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

HND to SIN Turbulence Forecast

Q: Is the Tokyo to Singapore flight turbulent?

The HND–SIN route typically experiences moderate turbulence. A very smooth flight with minimal turbulence expected.

Q: Which seat is smoothest on HND to SIN?

Wing seats are smoothest. On a Boeing 787 · Airbus A350, that's rows 21-32. Avoid the rear of the aircraft where turbulence is felt most.

Q: How long is the flight from HND to SIN?

The HND to SIN flight takes approximately 6h 40m, covering 3,810 miles (3,310 nautical miles) at a cruising altitude of 38,000 feet.

Is the Tokyo to Singapore flight turbulent? Live forecast & historical patterns.

Live forecast

HND

→

SIN

Tokyo · Singapore · 6h 40m

Turb Score

6h 40m

Duration

3,310 nm

Distance

38,000 ft

Cruise Alt.

Moderate

Typical

⚠️ Moderate turbulence today

Get exact timing, altitude & best seat — free

Download free on the App Store ★★★★★ 4.8 · 20K+ reviews Get it on Google Play ★★★★★ 4.8 · 20K+ reviews

★★★★★ 4.8 · 20,000+ reviews · iOS & Android

Scan to get the full forecast ★★★★★ 4.8 · 20,000+ reviews · iOS & Android · Free

Typical turbulence along the route

Historical average pattern for HND–SIN

0h1h2h3h4h5h6h6h 40m

Smooth

Light

Moderate

Heavy

About the HND–SIN route

The Tokyo to Singapore route spans the Pacific Ocean — one of the longest commercial flight paths in the world at 3,810 miles. The Pacific jet stream creates moderate turbulence, typically around 3–7 hours into the flight. The sheer length of the route means passengers experience varying conditions: calm stretches punctuated by bumpy patches.

The route is served by Singapore Airlines, Japan Airlines, ANA on Boeing 787 · Airbus A350 aircraft, with flights typically cruising at 38,000 feet over a distance of 3,810 miles (3,310 nautical miles).

💡 Tip: Long flight — turbulence varies throughout. Wing seats significantly reduce motion.

Tokyo to Singapore Flight Time

How long is the flight from HND to SIN?

6h 40m

Flight Time

3,810 mi

Distance

38,000 ft

Cruising Altitude

Boeing 787

Aircraft

The Tokyo (HND) to Singapore (SIN) flight takes approximately 6h 40m, covering 3,810 miles (3,310 nautical miles) at 38,000 feet. The route is operated by Singapore Airlines, Japan Airlines, ANA. Return flights (SIN to HND) take a similar time, though westbound transatlantic and transpacific routes are typically 30–60 minutes longer due to headwinds.

Turbulence levels on HND–SIN

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

Download on the App Store ★★★★★ 4.8 · 20K+ reviews Get it on Google Play ★★★★★ 4.8 · 20K+ reviews

Best time to fly HND–SIN

Turbulence by month

Smooth

Light

Moderate

Rough

Best seat on HND–SIN

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

HND → YVR

Tokyo Haneda → Vancouver

Los Angeles → Singapore

Light

AMS → SIN

Amsterdam → Singapore

See all transpacific flights →

Related guides

Learn more about flight turbulence

Turbulence Tracker

Track any flight in real time

→

Best Seat Guide

Which rows feel turbulence least

→

Clear-Air Turbulence

The invisible rough air that's increasing

→

Turbulence in 2025

Is turbulence getting worse?

→

Turbulence Forecast Map

Global turbulence outlook

→

Passenger Reports

Flew this in March expecting smooth skies based on past experience, but it was noticeably bumpier than usual. About an hour of moderate chop. Seatbelt sign basically stayed on.

Regular traveler · March

The somewhere over the ocean section was legitimately rough. I was holding on to the armrests. Lasted maybe 40 minutes. One of the flight attendants had to sit down. Not a fun 6h 40m flight but we landed fine.

Solo traveler · April

More turbulent than I expected. The over the Pacific section was pretty rough — overhead bins rattling, some gasps from other passengers. Died down before landing.

Leisure traveler · January

All HND routes→ All SIN routes→

Frequently asked questions

Is the Tokyo to Singapore flight turbulent?

The HND–SIN route typically experiences moderate turbulence. A very smooth flight with minimal turbulence expected. The turbulence score for this route is 8/100.

When is turbulence worst on HND to SIN?

Long flight — turbulence varies throughout. Wing seats significantly reduce motion. Check the turbulence chart above for the typical pattern along this specific route.

Which seat is smoothest on HND to SIN?

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 HND to SIN?

The HND to SIN flight takes approximately 6h 40m, covering 3,810 miles (3,310 nautical miles).

Which airlines fly HND to SIN?

The main airlines operating this route are Singapore Airlines, Japan Airlines, ANA, 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