When is the Seattle to Busan 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 SEA to PUS route?

The SEA–PUS route is typically operated by Boeing 777 · Airbus A350. Airlines include United, American Airlines, Delta.

Is turbulence on SEA to PUS dangerous?

No — turbulence on the SEA–PUS 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 SEA to PUS flight?

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

SEA to PUS Turbulence Forecast

Q: Is the Seattle to Busan flight turbulent?

The SEA–PUS route typically experiences moderate turbulence. Light turbulence may occur — mostly smooth with occasional bumps.

Q: Which seat is smoothest on SEA to PUS?

Wing seats are smoothest. On a Boeing 777 · Airbus A350, that's rows 20–38. Avoid the rear of the aircraft where turbulence is felt most.

Q: How long is the flight from SEA to PUS?

The SEA to PUS flight takes approximately 10h 45m, covering 5,231 miles (4,546 nautical miles) at a cruising altitude of 37,000 feet.

Is the Seattle to Busan flight turbulent? Live forecast & historical patterns.

Live forecast

SEA

→

PUS

Seattle · Busan · 10h 45m

46.0

Turb Score

10h 45m

Duration

4,546 nm

Distance

37,000 ft

Cruise Alt.

Moderate

Typical

⚠️ Moderate turbulence today

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Typical turbulence along the route

Historical average pattern for SEA–PUS

0h1h2h3h4h5h6h10h 45m

Smooth

Light

Moderate

Heavy

About the SEA–PUS route

The Seattle to Busan route spans the Pacific Ocean — one of the longest commercial flight paths in the world at 5,231 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 United, American Airlines, Delta on Boeing 777 · Airbus A350 aircraft, with flights typically cruising at 37,000 feet over a distance of 5,231 miles (4,546 nautical miles).

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

Seattle to Busan Flight Time

How long is the flight from SEA to PUS?

10h 45m

Flight Time

5,231 mi

Distance

37,000 ft

Cruising Altitude

Boeing 777

Aircraft

The Seattle (SEA) to Busan (PUS) flight takes approximately 10h 45m, covering 5,231 miles (4,546 nautical miles) at 37,000 feet. The route is operated by United, American Airlines, Delta. Return flights (PUS to SEA) take a similar time, though westbound transatlantic and transpacific routes are typically 30–60 minutes longer due to headwinds.

Turbulence levels on SEA–PUS

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 SEA–PUS

Turbulence by month

Smooth

Light

Moderate

Rough

Best seat on SEA–PUS

Boeing 777

Front

Rows 1–19

Light

✓ Wing

Rows 20–38

Smoothest

Rear

Rows 39+

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

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Global turbulence outlook

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Passenger Reports

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

Leisure traveler · April

Moderate turbulence mid-Pacific — the kind where you're glad you kept your seatbelt on. Lasted about 30-40 minutes, then smoothed out. I've had worse on transatlantic routes.

Frequent flyer · December

Rough patch mid-Pacific in January — drinks went everywhere on the row behind me. Probably 45 minutes of actual turbulence. Nothing dangerous but definitely uncomfortable.

Business traveler · January

All SEA routes→ All PUS routes→

Frequently asked questions

Is the Seattle to Busan flight turbulent?

The SEA–PUS route typically experiences moderate turbulence. Light turbulence may occur — mostly smooth with occasional bumps. The turbulence score for this route is 46.0/100.

When is turbulence worst on SEA to PUS?

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 SEA to PUS?

Wing seats are always the smoothest. On a Boeing 777 (the most common aircraft on this route), that's rows 20–38. Avoid the very rear of the aircraft — it amplifies turbulence motion.

How long is the flight from SEA to PUS?

The SEA to PUS flight takes approximately 10h 45m, covering 5,231 miles (4,546 nautical miles).

Which airlines fly SEA to PUS?

The main airlines operating this route are United, American Airlines, Delta, flying Boeing 777 · 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