When is the Chicago to London 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.

ORD to LHR Turbulence Forecast

Q: Is the Chicago to London flight turbulent?

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

Q: Which seat is smoothest on ORD to LHR?

Wing seats are smoothest. On a Boeing 777 · Boeing 787, that's rows 20–36. Avoid the rear of the aircraft.

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

The ORD to LHR flight takes approximately 8h 40m, covering 3,868 miles at 38,000 feet.

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

Live forecast

ORD

→

LHR

Chicago · London · 8h 40m

Turb Score

8h 40m

Duration

3,360 nm

Distance

38,000 ft

Cruise Alt.

Moderate

Typical

⚠️ Moderate turbulence today

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Typical turbulence along the route

Historical average pattern for ORD–LHR

0h1h2h3h4h5h6h8h 40m

Smooth

Light

Moderate

Heavy

About the ORD–LHR route

The Chicago to London route crosses the North Atlantic, where the jet stream is the primary source of turbulence. Flying at 38,000 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, American Airlines, British Airways on Boeing 777 · Boeing 787 aircraft, with flights typically cruising at 38,000 feet over a distance of 3,868 miles (3,360 nautical miles).

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

Chicago to London Flight Time

How long is the flight from ORD to LHR?

8h 40m

Flight Time

3,868 mi

Distance

38,000 ft

Cruising Altitude

Boeing 777

Aircraft

The Chicago (ORD) to London (LHR) flight takes approximately 8h 40m, covering 3,868 miles (3,360 nautical miles) at 38,000 feet. The route is operated by United Airlines, American Airlines, British Airways. Return flights (LHR to ORD) take a similar time, though westbound transatlantic and transpacific routes are typically 30–60 minutes longer due to headwinds.

Turbulence levels on ORD–LHR

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 ORD–LHR

Turbulence by month

Smooth

Light

Moderate

Rough

Best seat on ORD–LHR

Boeing 777

Front

Rows 1–19

Light

✓ Wing

Rows 20–36

Smoothest

Rear

Rows 37+

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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Passenger Reports

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

Leisure traveler · June

Moderate turbulence mid-Atlantic — 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 · March

This was genuinely difficult for me. Real bumps for a long stretch somewhere over Greenland, seatbelt sign on for what felt like forever. The flight attendants were calm which helped. Got through it.

Nervous flyer · April

All ORD routes→ All LHR routes→

Frequently asked questions

Is the Chicago to London flight turbulent?

The ORD–LHR route typically experiences moderate turbulence. Moderate turbulence expected — fasten seatbelt when seated. The turbulence score for this route is 63/100.

When is turbulence worst on ORD to LHR?

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 ORD to LHR?

Wing seats are always the smoothest. On a Boeing 777 (the most common aircraft on this route), that's rows 20–36. Avoid the very rear of the aircraft — it amplifies turbulence motion.

How long is the flight from ORD to LHR?

The ORD to LHR flight takes approximately 8h 40m, covering 3,868 miles (3,360 nautical miles).

Which airlines fly ORD to LHR?

The main airlines operating this route are United Airlines, American Airlines, British Airways, flying Boeing 777 · Boeing 787 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