Your Flight
We analysed more than 13,000 data points along your route from Chicago O'Hare International Airport, Chicago to Liège Airport, Grâce-Hollogne.
ORD
Chicago O'Hare International Airport
✈
LGG
Liège Airport
Route Information
Departure
ORD (ORD)
Distance
6,748.0 km (3,643.6 nautical miles)
Arrival
LGG (LGG)
Estimated Flight Time
506 minutes (8h 26m)
Flight Profile
Cruise Altitude: 39,000 ft (Flight Level 390)
Route calculated using great circle navigation
Turbulence comfort along route
Comfort score combines turbulence probability with intensity, higher means rougher
Smooth
Light
Moderate
Severe
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 they don't put the aircraft in danger. Many passengers feel exactly the same way.
Right now on your route
Live pilot reports from aircraft flying ORD → LGG
15 pilot reports along this route
14 / 15
Reporting smooth
0 / 15
Light turbulence
1
Moderate or worse
Latest pilot reports
Smooth
MDW UA /OV MDW/TM 0115/FL020/TP B737/SK BKN020
4m ago
Smooth
ARP ICE85V 5632N01432W 0115 F360 SUNOT 0120 6100N02000W MS53 245/52 KT TFIAC QXS BRR 020115 J20A
4m ago
Smooth
ARP FDX97 5633N04744W 0114 F320 5600N05000W 0125 HOIST MS44 334/13 KT N871FD DDL UAK 020114 F63A
5m ago
Smooth
ARP FDX5103 5619N04756W 0113 F300 5602N05001W 0123 5504N05701W MS39 335/15 KT N110FE DDL UAK 020113 F92A
6m ago
Smooth
ARP AUA2R 5429N06012W 0110 F370 HOIST 0124 5600N05000W MS55 294/24 KT OELPM DDL YYR 020110 L68A
9m ago
AI-powered flight briefing
13,000 data points analyzed
· HIGH confidence
Your Journey Beta
2 hours 35 minutes and 3 hours 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.
Smooth Flight
We're expecting smooth conditions throughout your flight. You can sit back and relax.
Takeoff
Takeoff should feel smooth with possible light bumps, with calm conditions around the airport.
Winds Aloft
Winds at cruising altitude are about 41 knots. These winds are favorable and may get you there up to 35 minutes early.
Landing
Landing should feel smooth with possible light bumps 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 8h 26min
Maximum turbulence expected per segment
Takeoff
Light
0:30-1:00
Light
1:00-1:30
Light
1:30-2:00
Light
2:00-2:30
Light
2:30-3:00
Moderate
3:00-3:30
Smooth
3:30-4:00
Smooth
4:00-4:30
Light
4:30-5:00
Light
5:00-5:30
Smooth
5:30-6:00
Smooth
6:00-6:29
Light
6:29-6:58
Light
6:58-7:27
Light
7:27-7:56
Light
Landing
Light
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
Wind
16 kt G24 (30°)
Sky
Overcast
Temperature
21°C
Conditions
MVFR - Reduced visibility, minor delays possible
LGG
Liège Airport - Arrival
Wind
5 kt (30°)
Sky
NSC
Temperature
18°C
Conditions
VFR - Clear conditions, no delays expected
Your flight details
Departure timing and aircraft information
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.