Your Flight
We analysed more than 11,000 data points along your route from Toronto Lester B. Pearson International Airport, Toronto to Francisco de Sá Carneiro Airport, Porto.
Air Transat
YYZ
OPO
TS764
Air Transat · Live forecast
YYZ
→
OPO
79
Calm Score
"Mostly smooth — one short bumpy section you'll handle."
6h 55m
Duration
3,047 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 7 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 → OPO
15 pilot reports along this route
14 / 15
Reporting smooth
0 / 15
Light turbulence
1
Moderate or worse
Latest pilot reports
Smooth
ARP VJT836 4537N02736W 1628 F430 4600N03000W 1642 4600N04000W MS50 237/70 KT 9HVJK DDL XXF 161628 M79A
2m ago
Smooth
ARP LOT29 4830N03531W 1627 F380 4700N04000W 1654 4400N05000W MS45 272/48 KT SPLSB DDL XXH 161627 L16A
3m ago
Smooth
ARP SWR64E 4634N03251W 1624 F380 4502N04001W 1710 4002N05001W MS46 266/61 KT HBJHM DDL XXF 161624 J69A
6m ago
Smooth
ARP ACA868 4837N05136W 1623 F350 4900N05000W 1631 5000N04000W MS60 316/108 KT CFSES DDL IG1 161623 F62A
7m ago
Smooth
ARP VIR26Q 4851N04221W 1623 F390 4900N04000W 1633 5000N03000W MS48 303/76 KT GVSPY DDL XXN 161623 L92A
7m ago
AI-powered flight briefing
11,000 data points analyzed
· HIGH confidence
Your Journey Beta
22 minutes, 36 minutes, and 5 hours 40 minutes 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 a bit bumpy initially, with calm conditions around the airport.
Winds Aloft
Winds at cruising altitude are about 71 knots. These winds are favorable and may get you there up to 46 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
Flight Timeline 6h 55min
Maximum turbulence expected per segment
Takeoff
Moderate
0:30-1:00
Moderate
1:00-1:30
Light
1:30-2:00
Light
2:00-2:30
Light
2:30-3:00
Light
3:00-3:30
Light
3:30-4:00
Light
4:00-4:29
Light
4:29-4:58
Light
4:58-5:27
Light
5:27-5:56
Moderate
5:56-6:25
Light
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
Wind
15 kt G25 (250°)
Sky
Overcast
Temperature
9°C
Conditions
MVFR — Reduced visibility, minor delays possible
OPO
Francisco de Sá Carneiro Airport — Arrival
Wind
8 kt (90°)
Sky
NSC
Temperature
19°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:
- 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.