Your Flight
We analysed more than 15,000 data points along your route from George Bush Intercontinental Houston Airport, Houston to London Heathrow Airport, London.
United Airlines
IAH
LHR
UA5
United Airlines · Live forecast
IAH
→
LHR
77
Calm Score
"Mostly smooth — one short bumpy section you'll handle."
9h 10m
Duration
4,192 nm
Distance
39,000 ft
Cruise Altitude
VERY 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 14 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 → LHR
15 pilot reports along this route
13 / 15
Reporting smooth
1 / 15
Light turbulence
1
Moderate or worse
Latest pilot reports
Smooth
ARP RCH676 5647N03125W 1043 F310 5500N04000W 1124 5100N05000W MS45 233/18 KT 90169A DDL XXN 161044 F12A
5m ago
Smooth
ARP DAL177 5359N01405W 1043 F320 DOGAL 1048 5500N02000W MS52 247/85 KT N824NW DDL BLY 161043 J42A
5m ago
Smooth
ARP UAL905 5353N01406W 1043 F380 DOGAL 1048 5501N02000W MS58 257/86 KT N23983 DDL BLY 161043 L10A
5m ago
Smooth
ARP UAL5 5501N01827W 1042 F370 RESNO 1055 NETKI MS59 237/105 KT N216UA DDL XXN 161042 F97A
6m ago
Smooth
ARP UAL56 5353N01917W 1041 F343 5401N02000W 1045 5501N03000W MS55 230/114 KT N204UA DDL XXF 161041 F29A
7m ago
AI-powered flight briefing
15,000 data points analyzed
· VERY HIGH confidence
Your Journey Beta
3 hours 20 minutes and 4 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 over the Appalachian Mountains and crossing the North Atlantic Ocean – these areas 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 75 knots. These winds are favorable and may get you there up to 64 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 10min
Maximum turbulence expected per segment
Takeoff
Light
0:30-0:59
Light
0:59-1:28
Light
1:28-1:57
Light
1:57-2:26
Light
2:26-2:55
Light
2:55-3:24
Moderate
3:24-3:53
Light
3:53-4:22
Moderate
4:22-4:51
Light
4:51-5:20
Light
5:20-5:49
Light
5:49-6:18
Light
6:18-6:47
Light
6:47-7:16
Light
7:16-7:44
Light
7:44-8:12
Light
8:12-8:40
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
IAH
George Bush Intercontinental Houston Airport — Departure
Wind
10 kt G32 (350°)
Sky
Scattered
Temperature
10°C
Conditions
VFR — Clear conditions, no delays expected
LHR
London Heathrow Airport — Arrival
Wind
9 kt (230°)
Sky
Few
Temperature
9°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
b789
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.