LHR to IAD Turbulence Forecast

Q: Is the London to Washington DC flight turbulent?

The LHR–IAD route typically experiences moderate turbulence. Moderate turbulence expected — fasten seatbelt when seated.

Q: Which seat is smoothest on LHR to IAD?

Wing seats are smoothest. On a Boeing 767, that's rows 18–30. Avoid the rear of the aircraft.

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

The LHR to IAD flight takes approximately 8h 35m.

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

Live forecast

LHR

→

IAD

London · Washington DC · 8h 35m

Turb Score

8h 35m

Duration

3,268 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 LHR–IAD

0h1h2h3h4h5h6h8h 35m

Smooth

Light

Moderate

Heavy

About the LHR–IAD route

The London to Washington DC route crosses the North Atlantic, where the jet stream is the primary source of turbulence. Flying at 37,000 feet, the aircraft encounters the strongest bumps roughly 2–5 hours into the flight. This is clear-air turbulence — no clouds, no visual warning — which makes a pre-flight forecast especially valuable.

The route is served by United Airlines, British Airways on Boeing 767 · Boeing 787 aircraft, with flights typically cruising at 37,000 feet over a distance of 3,760 miles (3,268 nautical miles).

💡 Tip: Turbulence peaks mid-flight over the Atlantic. First and last hour are usually smooth.

Turbulence levels on LHR–IAD

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 LHR–IAD

Turbulence by month

Smooth

Light

Moderate

Rough

Best seat on LHR–IAD

Boeing 767

Front

Rows 1–17

Light

✓ Wing

Rows 18–30

Smoothest

Rear

Rows 31+

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

See all transatlantic flights →

All LHR routes→ All IAD routes→

Frequently asked questions

Is the London to Washington DC flight turbulent?

The LHR–IAD route typically experiences moderate turbulence. Moderate turbulence expected — fasten seatbelt when seated. The turbulence score for this route is 61/100.

When is turbulence worst on LHR to IAD?

Turbulence peaks mid-flight over the Atlantic. First and last hour are usually smooth. Check the turbulence chart above for the typical pattern along this specific route.

Which seat is smoothest on LHR to IAD?

Wing seats are always the smoothest. On a Boeing 767 (the most common aircraft on this route), that's rows 18–30. Avoid the very rear of the aircraft — it amplifies turbulence motion.

How long is the flight from LHR to IAD?

The LHR to IAD flight takes approximately 8h 35m, covering 3,760 miles (3,268 nautical miles).

Which airlines fly LHR to IAD?

The main airlines operating this route are United Airlines, British Airways, flying Boeing 767 · Boeing 787 aircraft.