United Airlines IAH LHR UA5
United Airlines · Live forecast
IAH → LHR
UA5 · Mar 16, 2026 · 20:05 CD
77
Calm Score
"Mostly smooth — one short bumpy section you'll handle."
9h 10m
Duration
4,192 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
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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
0 / 15
Light turbulence
2
Moderate or worse
Latest pilot reports
Smooth
ARP DLH449 5322N04801W 0457 F370 5430N04000W 0530 5500N03000W MS47 283/42 KT DAIKQ DDL XXH 160457 J95A
2m ago
Smooth
ARP UAF1241 5602N01746W 0457 F330 PIKIL 0507 SOVED MS55 252/116 KT 00406A DDL XXF 160457 F61A
2m ago
Moderate
BUF UUA /OV BUF320010/TM 0455/FL030/TP B737/WV +- 15 SHORT FINAL RWY 14/TB MOD TURB 030 THE SFC
4m ago
Smooth
ARP DLH441 5234N 04653W 0455 F350 M48 288/38 5330N 04000W 0524 5430N 03000W KT DABVZ DDL XXH 160455 F38A
4m ago
Smooth
ARP N6PG 5325N 04329W 0455 F450 M45 252/25 5400N 04000W 0510 5500N 03000W KT N6PG DDL XXN 160456 F89A
4m ago
AI-powered flight briefing
15,000 data points analyzed · HIGH confidence
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.

Your Journey Beta

4 hours, 6 hours, and 8 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 77 knots. These winds are favorable and may get you there up to 66 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
Live data from ECMWF global forecast models · 12 atmospheric pressure levels · Updated every 6 hours
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
Light
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
Moderate
6:18-6:47
Light
6:47-7:16
Light
7:16-7:44
Light
7:44-8:12
Moderate
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
20 kt G30 (350°)
Sky
Few
Temperature
18°C
Conditions
VFR — Clear conditions, no delays expected
LHR London Heathrow Airport — Arrival
Wind
10 kt (270°)
Sky
Few
Temperature
5°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:

Disclaimer: This forecast is for informational purposes only. Always consult official aviation weather sources and follow ATC guidance.