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
80
Calm Score
"A smooth ride ahead — sit back and enjoy."
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 13 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
7 pilot reports along this route
7 / 7
Reporting smooth
0 / 7
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP DAL127 4454N 02352W 1034 F320 M50 231/77 4600N 03000W 1112 4700N 04000W KT N832MH QXT AOE 161034 F31A
6m ago
Smooth
ARP OCN691 4739N 03502W 1033 F370 M43 242/52 4900N 03000W 1057 5000N 02000W KT DAIKE DDL XXH 161033 J07A
7m ago
Smooth
ARP OCN691 4702N03701W 1023 F370 4900N03000W 1057 5000N02000W MS43 262/53 KT DAIKE DDL XXH 161023 J03A
17m ago
Smooth
ARP VIR94 4520N 02741W 1021 F410 M55 238/65 4900N 02000W 1102 DINIM KT GVWHO DDL XXN 161021 L13A
19m ago
Smooth
ARP CLX6697 4749N04243W 1019 F370 4800N04000W 1031 5100N03000W MS47 304/74 KT LXVCL QXT AME 161019 F28A
21m ago
AI-powered flight briefing
11,000 data points analyzed
· HIGH confidence
Your Journey Beta
18 minutes, 36 minutes, and 3 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 a bit bumpy initially, with calm conditions around the airport.
Winds Aloft
Winds at cruising altitude are about 69 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
Moderate
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
Light
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
Visibility
10+ mi
Wind
18 kt G28 (240°)
Sky
Overcast
Temperature
11°C
Conditions
VFR — Clear conditions, no delays expected
LIS
Lisbon Humberto Delgado Airport — Arrival
Wind
7 kt (60°)
Sky
NSC
Temperature
15°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.