CTS → HNDSome bumps possible

Is the flight from Sapporo to Tokyo bumpy?

The Sapporo–Tokyo flight is usually smooth, with some bumpy stretches at certain times of year. Here is where the plane can move, when it happens most, and how to check today’s forecast for your flight.

One of the world’s busiest air routes: it appears in OAG’s list of the routes with the most seats in 2025.
820 km509 miles
1 h 30 minapprox. flight time
10–12 kmusual cruising altitude
See today’s forecast for this flight →

Where the plane can move

On a short flight most of the time is spent climbing and descending. That is when you pass through clouds and the air near the ground, which is where most bumps happen; at cruise it is usually calm.

Japan and Korea: the winter jet stream

A very strong jet stream crosses Japan and Korea in winter. It can bring patches of clear-air turbulence, usually light; pilots get forecasts for these areas and change altitude to avoid them.

When: December to March

Today’s warnings in the area

Live map of turbulence and storm warnings issued to pilots (SIGMET and AIRMET), updated every few minutes.

Tips for this flight

Frequently asked questions

Is turbulence dangerous on the Sapporo–Tokyo flight?

Turbulence is common and usually just uncomfortable. According to the FAA, the real risk is for people not wearing a seatbelt, who can be thrown from their seats, so keep it fastened while seated.

When is the Sapporo–Tokyo flight bumpiest?

Based on the areas the route crosses: December to March.

Where should I sit to feel less turbulence?

Over the wings, near the plane’s centre of gravity. The rear of the cabin moves the most.

Other routes

Nervous about flying? Try the three breathing exercises for a calm flight or look at the live turbulence maps.

Sources