Your Flight
We analysed more than 12,500 data points along your route from Chicago O'Hare International Airport, Chicago to London Heathrow Airport, London.
American Airlines
ORD
LHR
AA86
American Airlines · Live forecast
ORD
→
LHR
79
Calm Score
"Mostly smooth — one short bumpy section you'll handle."
7h 55m
Duration
3,425 nm
Distance
39,000 ft
Cruise Altitude
HIGH
Confidence
Turbulence comfort along route
Comfort score combines turbulence probability with intensity — higher means rougher
Smooth
Light
Moderate
Severe
Set an alert before your flight
Beta
You still have 15 hours before departure. We'll notify you if this forecast changes.
We know turbulence can feel scary — especially on long flights.
This report is built for you: what bumps feel like, when they happen, and why you'll be completely safe. 1 in 3 passengers feel exactly like you.
Right now on your route
Live pilot reports from aircraft flying ORD → LHR
15 pilot reports along this route
15 / 15
Reporting smooth
0 / 15
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP UAL958 5327N 01139W 0914 F320 M51 270/84 DOGAL 0933 5500N 02000W KT N665UA DDL ORK 160914 F53A
4m ago
Smooth
ARP CHG572 5733N 03537W 0912 F330 M49 262/04 5800N 03000W 0934 5800N 02000W KT OOACF DDL XXN 160912 F42A
6m ago
Smooth
ARP CHG572 5730N03559W 0910 F330 5800N03000W 0934 5800N02000W MS48 288/3 KT OOACF DDL XXN 160911 F40A
8m ago
Smooth
ARP ACA858 5504N 02154W 0910 F350 M57 228/125 5500N 02000W 0917 RESNO KT CFRAM DDL XXF 160910 F71A
8m ago
Smooth
ARP VIR8Y 5602N 02151W 0907 F370 M58 358/92 5558N 02000W 0914 PIKIL KT GVOWS DDL XXN 160907 L29A
11m ago
AI-powered flight briefing
12,500 data points analyzed
· HIGH confidence
Your Journey Beta
1 hour 20 minutes, 2 hours, and 5 hours 45 minutes into the flight: Some moderate bumps expected.
The crew may adjust altitude or ask you to stay seated during these sections.
The rest of the flight should be smooth.
Your route takes you crossing the North Atlantic Ocean – conditions there can sometimes cause light turbulence.
Mostly Smooth
Overall conditions look mostly smooth with occasional light bumps. Nothing to worry about.
Takeoff
Takeoff should feel smooth with possible light bumps, with calm conditions around the airport.
Winds Aloft
Winds at cruising altitude are about 76 knots. These winds are favorable and may get you there up to 56 minutes early.
Landing
Landing should feel a bit bumpy on descent with typical approach conditions.
You're in Safe Hands
If you feel nervous at any point, remember that turbulence is expected, safe, and part of normal flying. The crew is monitoring everything, and the aircraft is built to handle far more than anything you will feel. Have a safe and calm flight.
Relaxation Exercises
ZeroTurb Index (ZTI): Powered by our turbulence prediction algorithm combining atmospheric Richardson Number, wind shear analysis, temperature gradients, and geomagnetic activity. Learn more
Flight Timeline 7h 55min
Maximum turbulence expected per segment
Takeoff
Light
0:30-1:00
Light
1:00-1:30
Moderate
1:30-2:00
Light
2:00-2:30
Moderate
2:30-3:00
Light
3:00-3:30
Light
3:30-4:00
Smooth
4:00-4:30
Light
4:30-5:00
Light
5:00-5:29
Light
5:29-5:58
Moderate
5:58-6:27
Light
6:27-6:56
Light
6:56-7:25
Light
Landing
Moderate
Smooth
Light
Moderate
Severe
Longer bars indicate higher turbulence intensity. Values shown are the maximum for each time segment.
Airport conditions
Live weather at departure and arrival
ORD
Chicago O'Hare International Airport — Departure
Visibility
1 mi
Wind
18 kt G28 (300°)
Sky
Broken
Temperature
-3°C
Conditions
IFR — Low visibility, delays likely
LHR
London Heathrow Airport — Arrival
Wind
14 kt (240°)
Sky
Broken
Temperature
8°C
Conditions
VFR — Clear conditions, no delays expected
Your flight details
Departure timing and aircraft information
Evening Flight Departure
Time of day
Evening Flight
Tip
Evening and night flights typically offer smoother conditions as thermal activity subsides and the atmosphere stabilizes after sunset.
When
Tomorrow — conditions may change
N821AN
Category
Wide-Body Aircraft
Size
Large
Comfort
Large, twin-aisle aircraft like this generally provide the smoothest ride through turbulence due to their size, weight, and advanced stabilization systems.
Data sources & our approach
ZeroTurb's Custom Algorithm: Our proprietary
ZeroTurb Index (ZTI) combines three meteorological indices weighted by their
predictive accuracy — giving you transparent, passenger-focused turbulence probability instead
of vague categories.
This forecast integrates data from:
- ECMWF Open Data — Global atmospheric model (wind/temperature at 13 flight levels)
- NOAA Aviation Weather Center — Pilot Reports (PIREPs), SIGMETs/AIRMETs, TAFs
- NOAA Space Weather Prediction Center — Aurora forecasts for polar routes
- AviationStack API — Flight schedules and airline operational data
Disclaimer: This forecast is for informational purposes only. Always consult official aviation weather sources and follow ATC guidance.