When is the Seoul to Tokyo 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 ICN to NRT route?

The ICN–NRT route is typically operated by Boeing 737 · Airbus A321. Airlines include Korean Air, Asiana, ANA, JAL.

Is turbulence on ICN to NRT dangerous?

No — turbulence on the ICN–NRT 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 ICN to NRT flight?

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

ICN to NRT Turbulence Forecast

Q: Is the Seoul to Tokyo flight turbulent?

The ICN–NRT route typically experiences light turbulence.

Q: Which seat is smoothest on ICN to NRT?

Wing seats are smoothest. On a Boeing 737 · Airbus A321, that's rows 15-22. Avoid the rear of the aircraft where turbulence is felt most.

Q: How long is the flight from ICN to NRT?

The ICN to NRT flight takes approximately 2h 12m, covering 860 miles (747 nautical miles) at a cruising altitude of 37,000 feet.

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

Live forecast

ICN

→

NRT

Seoul · Tokyo · 2h 12m

4.3

Turb Score

2h 12m

Duration

747 nm

Distance

37,000 ft

Cruise Alt.

light

Typical

⚠️ light turbulence today

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Typical turbulence along the route

Historical average pattern for ICN–NRT

0h1h2h3h4h5h6h2h 12m

Smooth

Light

Moderate

Heavy

About the ICN–NRT route

The Seoul to Tokyo route spans the Pacific Ocean — one of the longest commercial flight paths in the world at 860 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 Korean Air, Asiana, ANA, JAL on Boeing 737 · Airbus A321 aircraft, with flights typically cruising at 37,000 feet over a distance of 860 miles (747 nautical miles).

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

Seoul to Tokyo Flight Time

How long is the flight from ICN to NRT?

2h 12m

Flight Time

860 mi

Distance

37,000 ft

Cruising Altitude

Boeing 737

Aircraft

The Seoul (ICN) to Tokyo (NRT) flight takes approximately 2h 12m, covering 860 miles (747 nautical miles) at 37,000 feet. The route is operated by Korean Air, Asiana, ANA, JAL. Return flights (NRT to ICN) take a similar time, though westbound transatlantic and transpacific routes are typically 30–60 minutes longer due to headwinds.

Turbulence levels on ICN–NRT

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 ICN–NRT

Turbulence by month

Smooth

Light

Moderate

Rough

Best seat on ICN–NRT

Boeing 737

Front

Rows 1–14

Light

✓ Wing

Rows 15-22

Smoothest

Rear

Rows 23+

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

San Francisco → Tokyo

See all transpacific flights →

Related guides

Learn more about flight turbulence

Turbulence Tracker

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Best Seat Guide

Which rows feel turbulence least

→

Clear-Air Turbulence

The invisible rough air that's increasing

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Turbulence in 2025

Is turbulence getting worse?

→

Turbulence Forecast Map

Global turbulence outlook

→

Passenger Reports

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

First-time flyer · July

Some light chop crossing the dateline — seatbelt sign came on for maybe 20 minutes but nothing to worry about. Typical for this route in March.

Regular traveler · March

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

Frequent flyer · March

All ICN routes→ All NRT routes→

Frequently asked questions

Is the Seoul to Tokyo flight turbulent?

The ICN–NRT route typically experiences light turbulence. The turbulence score for this route is 4.3/100.

When is turbulence worst on ICN to NRT?

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 ICN to NRT?

Wing seats are always the smoothest. On a Boeing 737 (the most common aircraft on this route), that's rows 15-22. Avoid the very rear of the aircraft — it amplifies turbulence motion.

How long is the flight from ICN to NRT?

The ICN to NRT flight takes approximately 2h 12m, covering 860 miles (747 nautical miles).

Which airlines fly ICN to NRT?

The main airlines operating this route are Korean Air, Asiana, ANA, JAL, flying Boeing 737 · Airbus A321 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