Your Flight
We analysed more than 4,000 data points along your route from Toronto Lester B. Pearson International Airport, Toronto to St. John's International Airport, St. John's.
Westjet
YYZ
YYT
WS780
Westjet · Live forecast
YYZ
→
YYT
Also sold as:
78
Calm Score
"Mostly smooth — one short bumpy section you'll handle."
3h 5m
Duration
1,147 nm
Distance
35,000 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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Beta
You still have 20 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 YYZ → YYT
15 pilot reports along this route
14 / 15
Reporting smooth
0 / 15
Light turbulence
1
Moderate or worse
Latest pilot reports
Smooth
ARP BAW176A 4851N05428W 0206 F390 ELSIR 0217 5000N05000W MS40 225/47 KT GVIIW DDL YYT 170206 F36A
5m ago
Smooth
ARP DLH4W 4752N05432W 0204 F390 JOOPY 0216 4858N04959W MS44 221/63 KT DAIVC DDL YDF 170204 J86A
7m ago
Smooth
ARP UAL102 4558N05445W 0201 F360 PORTI 0214 4700N05000W MS48 245/87 KT N782UA DDL YYT 170201 F73A
10m ago
Smooth
ARP VIR6J 4653N05414W 0200 F380 4812N05140W 0214 4900N05000W MS44 235/63 KT GVNYL DDL YYT 170200 L88A
11m ago
Smooth
ARP SWR23A 4602N05425W 0159 F390 PORTI 0210 4700N05000W MS47 239/66 KT HBJHD DDL YYT 170159 J69A
12m ago
AI-powered flight briefing
4,000 data points analyzed
· HIGH confidence
Your Journey Beta
1 hour 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 63 knots. These winds are favorable and may get you there up to 14 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 3h 05min
Maximum turbulence expected per segment
Takeoff
Light
0:20-0:49
Light
0:49-1:18
Moderate
1:18-1:47
Light
1:47-2:16
Light
2:16-2:45
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
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
YYT
St. John's International Airport — Arrival
Visibility
10+ mi
Wind
12 kt G22 (250°)
Sky
Few
Temperature
16°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
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.