Your Flight
We analysed more than 11,000 data points along your route from Toronto Lester B. Pearson International Airport, Toronto to Lisbon Humberto Delgado Airport, Lisbon.
Air Transat
YYZ
LIS
TS480
Air Transat · Live forecast
YYZ
→
LIS
79
Calm Score
"Mostly smooth — one short bumpy section you'll handle."
6h 55m
Duration
3,100 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 21 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 → LIS
15 pilot reports along this route
15 / 15
Reporting smooth
0 / 15
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP AFR5N 4737N05133W 0206 F370 4800N05000W 0214 4900N04000W MS59 310/61 KT FGZND QXS YYT 170206 F24A
0m ago
Smooth
ARP DAL256 4605N05408W 0206 F380 4634N05202W 0217 4700N05000W MS63 304/61 KT N439DX DDL IG1 170206 J45A
0m ago
Smooth
ARP DAL184 4605N05407W 0205 F320 4634N05202W 0215 4700N05000W MS47 295/47 KT N825MH QXS YYT 170205 F94A
1m ago
Smooth
ARP ACA832 4755N 05156W 0204 F350 M53 309/72 4800N 05000W 0212 4900N 04000W KT CFJZS DDL YYT 170204 F56A
2m ago
Smooth
ARP EIN1YL 4751N05421W 0204 F340 JOOPY 0216 4900N05000W MS54 288/58 KT EILRB DDL YDF 170204 J52A
2m ago
AI-powered flight briefing
11,000 data points analyzed
· HIGH confidence
Your Journey Beta
1 hour 35 minutes, 3 hours, and 3 hours 15 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 smooth with possible light bumps, with calm conditions around the airport.
Winds Aloft
Winds at cruising altitude are about 75 knots. These winds are favorable and may get you there up to 37 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 6h 55min
Maximum turbulence expected per segment
Takeoff
Light
0:30-1:00
Light
1:00-1:30
Moderate
1:30-2:00
Moderate
2:00-2:30
Light
2:30-3:00
Moderate
3:00-3:30
Moderate
3:30-4:00
Moderate
4:00-4:29
Light
4:29-4:58
Light
4:58-5:27
Light
5:27-5:56
Light
5:56-6:25
Smooth
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
1 mi
Wind
15 kt (280°)
Sky
Broken
Temperature
-1°C
Conditions
IFR — Low visibility, delays likely
LIS
Lisbon Humberto Delgado Airport — Arrival
Wind
10 kt (60°)
Sky
NSC
Temperature
13°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
a21n
Category
Narrow-Body Aircraft
Size
Medium
Comfort
Single-aisle mainline jets like this offer a comfortable ride. While you may feel turbulence more than on wide-body aircraft, they are engineered to handle it smoothly.
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.