When is the Bangkok to Kathmandu 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 KTM route?

The BKK–KTM route is typically operated by Airbus A320 · Boeing 737. Airlines include Thai Airways, Nepal Airlines, Buddha Air.

Is turbulence on BKK to KTM dangerous?

No — turbulence on the BKK–KTM 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 KTM flight?

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

BKK to KTM Turbulence Forecast

Q: Is the Bangkok to Kathmandu flight turbulent?

The BKK–KTM route typically experiences severe turbulence.

Q: Which seat is smoothest on BKK to KTM?

Wing seats are smoothest. On a Airbus A320 · Boeing 737, that's rows 14-20. Avoid the rear of the aircraft where turbulence is felt most.

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

The BKK to KTM flight takes approximately 3h 32m, covering 1,608 miles (1,397 nautical miles) at a cruising altitude of 35,000 feet.

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

Live forecast

BKK

→

KTM

Bangkok · Kathmandu · 3h 32m

10.5

Turb Score

3h 32m

Duration

1,397 nm

Distance

35,000 ft

Cruise Alt.

severe

Typical

⚠️ severe turbulence today

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Typical turbulence along the route

Historical average pattern for BKK–KTM

0h1h2h3h4h5h6h3h 32m

Smooth

Light

Moderate

Heavy

About the BKK–KTM route

The Bangkok to Kathmandu route crosses the Rocky Mountains — one of the most turbulent regions in North America. Mountain wave turbulence occurs when strong winds blow over mountain peaks, creating powerful invisible waves that extend to cruise altitude. The worst turbulence typically occurs in the first 30–60 minutes when the aircraft is climbing over the range.

The route is served by Thai Airways, Nepal Airlines, Buddha Air on Airbus A320 · Boeing 737 aircraft, with flights typically cruising at 35,000 feet over a distance of 1,608 miles (1,397 nautical miles).

💡 Tip: Mountain wave turbulence hits early. If flying over Rockies, expect the first hour to be bumpy.

Bangkok to Kathmandu Flight Time

How long is the flight from BKK to KTM?

3h 32m

Flight Time

1,608 mi

Distance

35,000 ft

Cruising Altitude

Airbus A320

Aircraft

The Bangkok (BKK) to Kathmandu (KTM) flight takes approximately 3h 32m, covering 1,608 miles (1,397 nautical miles) at 35,000 feet. The route is operated by Thai Airways, Nepal Airlines, Buddha Air. Actual flight time may vary by 10–20 minutes depending on wind conditions and routing.

Turbulence levels on BKK–KTM

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 BKK–KTM

Turbulence by month

Smooth

Light

Moderate

Rough

Best seat on BKK–KTM

Airbus A320

Front

Rows 1–13

Light

✓ Wing

Rows 14-20

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

BKK → LAX

Bangkok → Los Angeles

See all mountain routes →

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

→

Mountain Turbulence

Why mountain routes are the bumpiest

→

Severe Turbulence

What it feels like and how to prepare

→

Turbulence Forecast Map

Global turbulence outlook

→

Passenger Reports

A few bumpy patches on the climb out, lasted maybe half an hour total. Drink service was paused briefly. Not unusual for this time of year.

Frequent flyer · April

Kids barely noticed the turbulence — just some mild bumps over the mountains. Seatbelt sign was on and off a couple times. Nothing dramatic.

Parent traveling with kids · October

Flew Bangkok–Kathmandu 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 KTM routes→

Frequently asked questions

Is the Bangkok to Kathmandu flight turbulent?

The BKK–KTM route typically experiences severe turbulence. The turbulence score for this route is 10.5/100.

When is turbulence worst on BKK to KTM?

Mountain wave turbulence hits early. If flying over Rockies, expect the first hour to be bumpy. Check the turbulence chart above for the typical pattern along this specific route.

Which seat is smoothest on BKK to KTM?

Wing seats are always the smoothest. On a Airbus A320 (the most common aircraft on this route), that's rows 14-20. Avoid the very rear of the aircraft — it amplifies turbulence motion.

How long is the flight from BKK to KTM?

The BKK to KTM flight takes approximately 3h 32m, covering 1,608 miles (1,397 nautical miles).

Which airlines fly BKK to KTM?

The main airlines operating this route are Thai Airways, Nepal Airlines, Buddha Air, 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