Your Flight
We analysed more than 16,000 data points along your route from George Bush Intercontinental Houston Airport, Houston to Liège Airport, Grâce-Hollogne.
Challenge Airlines Be
IAH
LGG
X7572
Challenge Airlines Be · Live forecast
IAH
→
LGG
91
Calm Score
"A smooth ride ahead — sit back and enjoy."
9h 40m
Duration
4,414 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 16 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 IAH → LGG
15 pilot reports along this route
15 / 15
Reporting smooth
0 / 15
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP DAL162 5703N02850W 0621 F370 5700N02000W 0656 SUNOT MS54 339/55 KT N823NW DDL IG1 170621 J20A
2m ago
Smooth
ARP ELY001 5448N04303W 0619 F360 5401N05001W 0652 5225N05551W MS47 196/88 KT 4XECB QXT AME 170619 F52A
4m ago
Smooth
ARP UAL398 5155N05420W 0617 F370 5400N05000W 0641 6000N04000W MS40 205/35 KT N14120 DDL YIF 170617 F79A
6m ago
Smooth
ARP AIC191 5606N02428W 0615 F360 5600N03000W 0640 5400N04000W MS53 271/29 KT VTAEO QXT EUA 170615 F44A
8m ago
Smooth
ARP LOT16M 5433N04406W 0614 F370 5600N04000W 0632 6000N03000W MS49 319/93 KT SPLSB DDL XXH 170614 L14A
9m ago
AI-powered flight briefing
16,000 data points analyzed
· HIGH confidence
Your Journey Beta
6 hours 20 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 over the Appalachian Mountains and crossing the North Atlantic Ocean – these areas 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 calm conditions around the airport.
Winds Aloft
Winds at cruising altitude are about 34 knots. These winds are favorable and may get you there up to 16 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 9h 40min
Maximum turbulence expected per segment
Takeoff
Smooth
0:30-0:59
Smooth
0:59-1:28
Smooth
1:28-1:57
Light
1:57-2:26
Light
2:26-2:55
Light
2:55-3:24
Light
3:24-3:53
Light
3:53-4:22
Light
4:22-4:51
Smooth
4:51-5:20
Light
5:20-5:49
Light
5:49-6:18
Light
6:18-6:47
Moderate
6:47-7:16
Light
7:16-7:45
Light
7:45-8:14
Smooth
8:14-8:42
Smooth
8:42-9:10
Smooth
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
IAH
George Bush Intercontinental Houston Airport — Departure
Wind
9 kt (160°)
Sky
Scattered
Temperature
27°C
Conditions
VFR — Clear conditions, no delays expected
LGG
Liège Airport — Arrival
Wind
5 kt (20°)
Sky
NSC
Temperature
18°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
Today
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.