Your Flight
We analysed more than 11,000 data points along your route from London Heathrow Airport, London to Toronto Lester B. Pearson International Airport, Toronto.
Air Canada
LHR
YYZ
AC859
Air Canada · Live forecast
LHR
→
YYZ
85
Calm Score
"A smooth ride ahead — sit back and enjoy."
9h 5m
Duration
3,082 nm
Distance
40,000 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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This flight has already departed.
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 LHR → YYZ
15 pilot reports along this route
15 / 15
Reporting smooth
0 / 15
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP AFR010 5337N05327W 2150 F380 5245N05622W 2206 4653N06704W MS45 264/54 KT FGSPO QXT AME 172151 F44A
5m ago
Smooth
ARP UAE9936 5542N03155W 2149 F330 5600N03000W 2156 5700N02000W MS56 270/86 KT A6EFZ DDL XXH 172149 F71A
6m ago
Smooth
ARP FBU91S 5451N04216W 2148 F400 5400N05000W 2226 MELDI MS49 254/67 KT FHREV QXT AME 172148 J90A
7m ago
Smooth
ARP AFR012 5503N03050W 2146 F400 5501N04000W 2229 5401N05001W MS51 277/40 KT FHTYI QXT EUA 172146 J50A
9m ago
Smooth
ARP UAE9936 5535N03234W 2146 F330 5600N03000W 2156 5700N02000W MS56 266/86 KT A6EFZ DDL XXH 172146 F70A
9m ago
AI-powered flight briefing
11,000 data points analyzed
· HIGH confidence
Your Journey Beta
Your route takes you crossing the North Atlantic Ocean and over the Appalachian Mountains – 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 56 knots. These winds may delay arrival by up to 48 minutes.
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 05min
Maximum turbulence expected per segment
Takeoff
Light
0:30-0:59
Light
0:59-1:28
Light
1:28-1:57
Smooth
1:57-2:26
Smooth
2:26-2:55
Smooth
2:55-3:24
Light
3:24-3:53
Light
3:53-4:22
Light
4:22-4:51
Light
4:51-5:19
Light
5:19-5:47
Light
5:47-6:15
Light
6:15-6:43
Light
6:43-7:11
Smooth
7:11-7:39
Light
7:39-8:07
Light
8:07-8:35
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
LHR
London Heathrow Airport — Departure
Wind
12 kt (230°)
Sky
Scattered
Temperature
13°C
Conditions
MVFR — Reduced visibility, minor delays possible
YYZ
Toronto Lester B. Pearson International Airport — Arrival
Visibility
10+ mi
Wind
8 kt (150°)
Sky
Few
Temperature
16°C
Conditions
VFR — Clear conditions, no delays expected
Your flight details
Departure timing and aircraft information
Afternoon Flight Departure
Time of day
Afternoon Flight
Tip
Afternoon flights may encounter more turbulence due to thermal activity as the sun heats the ground, creating rising air currents.
When
Today
boeing 777-333(er)
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.