Your Flight
We analysed more than 11,500 data points along your route from Washington Dulles International Airport, Dulles to London Heathrow Airport, London.
United Airlines
IAD
LHR
UA924
United Airlines · Live forecast
IAD
→
LHR
80
Calm Score
"A smooth ride ahead — sit back and enjoy."
11h 35m
Duration
3,187 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 13 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 IAD → LHR
15 pilot reports along this route
15 / 15
Reporting smooth
0 / 15
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP BAW196E 4850N05154W 0945 F390 4858N05000W 0953 4958N04000W MS61 287/103 KT GZBJA DDL YYT 160945 L72A
3m ago
Smooth
ARP UAL5 5346N03321W 0944 F370 5400N03000W 0957 5500N02000W MS43 240/44 KT N216UA DDL XXN 160944 F81A
4m ago
Smooth
ARP BAW6AC 5326N04202W 0941 F390 5328N04000W 0949 5358N03000W MS47 286/35 KT GVIIF DDL XXN 160941 F73A
7m ago
Smooth
ARP CLX209 5254N 03020W 0940 F370 M44 225/65 5300N 03000W 0941 5359N 02000W KT LXVCB QXT AME 160940 F70A
8m ago
Smooth
ARP FDX34 5031N 05527W 0939 F350 M58 309/145 5051N 05204W 0953 5100N 05000W KT N853FD QXS YAY 160939 F46A
9m ago
AI-powered flight briefing
11,500 data points analyzed
· HIGH confidence
Your Journey Beta
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 possible light bumps, with calm conditions around the airport.
Winds Aloft
Winds at cruising altitude are about 67 knots. These winds are favorable and may get you there up to 43 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 11h 35min
Maximum turbulence expected per segment
Takeoff
Light
0:30-0:59
Smooth
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
Light
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
7:16-7:45
Light
7:45-8:14
Light
8:14-8:43
Light
8:43-9:12
Light
9:12-9:41
Light
9:41-10:09
Light
10:09-10:37
Light
10:37-11:05
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
IAD
Washington Dulles International Airport — Departure
Wind
18 kt G34 (220°)
Sky
Overcast
Temperature
16°C
Conditions
IFR — Low visibility, delays likely
LHR
London Heathrow Airport — Arrival
Wind
9 kt (230°)
Sky
Few
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
Today
N76054
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.