When is the Washington DC to Bangkok route most turbulent?

Check the monthly chart for exact patterns. Transatlantic and mountain routes are typically roughest in winter (Dec–Mar). Tropical routes peak during monsoon season.

IAD to BKK Turbulence Forecast

Q: Is the Washington DC to Bangkok flight turbulent?

The IAD–BKK route typically experiences light turbulence.

Q: Which seat is smoothest on IAD to BKK?

Wing seats are smoothest. On a Boeing 777-300ER · Boeing 787-9, that's rows 22–42. Avoid the rear of the aircraft.

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

The IAD to BKK flight takes approximately 17h 10m, covering 8,799 miles at 37,000 feet.

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

Live forecast

IAD

→

BKK

Washington DC · Bangkok · 17h 10m

39.6

Turb Score

17h 10m

Duration

7,646 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 IAD–BKK

0h1h2h3h4h5h6h17h 10m

Smooth

Light

Moderate

Heavy

About the IAD–BKK route

The Washington DC to Bangkok route spans the Pacific Ocean — one of the longest commercial flight paths in the world at 8,799 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 777-300ER · Boeing 787-9 aircraft, with flights typically cruising at 37,000 feet over a distance of 8,799 miles (7,646 nautical miles).

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

Washington DC to Bangkok Flight Time

How long is the flight from IAD to BKK?

17h 10m

Flight Time

8,799 mi

Distance

37,000 ft

Cruising Altitude

Boeing 777-300ER

Aircraft

The Washington DC (IAD) to Bangkok (BKK) flight takes approximately 17h 10m, covering 8,799 miles (7,646 nautical miles) at 37,000 feet. The route is operated by United, American Airlines, Delta. Return flights (BKK to IAD) take a similar time, though westbound transatlantic and transpacific routes are typically 30–60 minutes longer due to headwinds.

Turbulence levels on IAD–BKK

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 IAD–BKK

Turbulence by month

Smooth

Light

Moderate

Rough

Best seat on IAD–BKK

Boeing 777-300ER

Front

Rows 1–21

Light

✓ Wing

Rows 22–42

Smoothest

Rear

Rows 43+

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

IAD → LHR

Washington DC → London

Moderate

IAD → FRA

Washington DC → Frankfurt

See all transpacific flights →

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Passenger Reports

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

Parent traveling with kids · April

Some light chop somewhere over the ocean — seatbelt sign came on for maybe 20 minutes but nothing to worry about. Typical for this route in December.

Regular traveler · December

Flew Washington DC–Bangkok 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 IAD routes→ All BKK routes→

Frequently asked questions

Is the Washington DC to Bangkok flight turbulent?

The IAD–BKK route typically experiences light turbulence. The turbulence score for this route is 39.6/100.

When is turbulence worst on IAD to BKK?

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 IAD to BKK?

Wing seats are always the smoothest. On a Boeing 777-300ER (the most common aircraft on this route), that's rows 22–42. Avoid the very rear of the aircraft — it amplifies turbulence motion.

How long is the flight from IAD to BKK?

The IAD to BKK flight takes approximately 17h 10m, covering 8,799 miles (7,646 nautical miles).

Which airlines fly IAD to BKK?

The main airlines operating this route are United, American Airlines, Delta, flying Boeing 777-300ER · Boeing 787-9 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