Air Canada YYZ LHR AC856
Air Canada · Live forecast
YYZ → LHR
AC856 · Jul 17, 2026 · 20:25 ED
88
Calm Score
"A smooth ride ahead — sit back and enjoy."
7h 10m
Duration
3,082 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 YYZ → LHR
15 pilot reports along this route
15 / 15
Reporting smooth
0 / 15
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP PLF130 5439N04510W 0206 F330 5659N03959W 0232 5859N03000W MS42 189/90 KT 0112 QXT IGW 170206 F65A
5m ago
Smooth
ARP FDX5067 5358N04358W 0205 F370 5500N04000W 0223 5600N03000W MS49 197/80 KT N879FD QXT AME 170206 F50A
6m ago
Smooth
ARP DLH411 5346N02306W 0205 F400 5359N02000W 0218 5359N01500W MS59 316/26 KT DAIXW DDL XXH 170206 J28A
6m ago
Smooth
ARP DAL218 5347N02240W 0201 F370 5358N02000W 0213 5358N01500W MS54 336/22 KT N1605 QXS BRR 170201 F38A
10m ago
Smooth
ARP FDX5051 5605N02528W 0157 F350 5559N02000W 0220 5559N01500W MS50 260/16 KT N124FE QXT IGW 170157 F03A
14m ago
AI-powered flight briefing
11,000 data points analyzed · HIGH confidence
Your Flight

We analysed more than 11,000 data points along your route from Toronto Lester B. Pearson International Airport, Toronto to London Heathrow Airport, London.

Your Journey Beta

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.

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 39 knots. These winds are favorable and may get you there up to 12 minutes early.

Landing

Landing should feel smooth 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 7h 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
Smooth
2:26-2:55
Light
2:55-3:24
Light
3:24-3:52
Light
3:52-4:20
Moderate
4:20-4:48
Light
4:48-5:16
Light
5:16-5:44
Smooth
5:44-6:12
Smooth
6:12-6:40
Smooth
Landing
Smooth
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
YYZ Toronto Lester B. Pearson International Airport — Departure
Visibility
7 mi
Wind
8 kt G19 (150°)
Sky
Few
Temperature
25°C
Conditions
VFR — Clear conditions, no delays expected
LHR London Heathrow Airport — Arrival
Wind
5 kt (30°)
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
Tomorrow — conditions may change
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.

Fly this route, calmly Game · Beta A calming mini-game, not a forecast. Glide YYZ → LHR through soft clouds, nothing to crash into.