Your Flight
We analysed more than 13,000 data points along your route from Toronto Lester B. Pearson International Airport, Toronto to Václav Havel Airport Prague, Prague.
Air Canada
YYZ
PRG
AC934
Air Canada · Live forecast
YYZ
→
PRG
85
Calm Score
"A smooth ride ahead — sit back and enjoy."
8h 5m
Duration
3,609 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 → PRG
12 pilot reports along this route
12 / 12
Reporting smooth
0 / 12
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP RCH741 5606N02531W 0313 F350 5600N02000W 0336 PIKIL MS47 253/18 KT 23549S DDL IG1 170313 M21A
3m ago
Smooth
ARP LDX8 5558N05009W 0311 F410 5600N05000W 0312 5800N04000W MS42 174/49 KT OELTF DDL XXH 170312 F89A
5m ago
Smooth
ARP THY4JD 5513N01315W 0310 F360 ETARI 0317 5531N02000W MS55 011/12 KT TCLLZ QXS BRR 170310 L56A
6m ago
Smooth
ARP THY4KG 5754N02413W 0306 F360 5731N03000W 0332 5601N04001W MS53 270/41 KT TCLMD QXT EUA 170306 L68A
10m ago
Smooth
ARP AUA2R 5635N02442W 0306 F370 5629N02000W 0324 PIKIL MS56 266/29 KT OELPG DDL XXH 170306 L41A
10m ago
AI-powered flight briefing
13,000 data points analyzed
· HIGH confidence
Your Journey Beta
4 hours and 4 hours 50 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, crossing the North Atlantic Ocean, and over the Scottish Highlands – these areas can sometimes cause 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 14 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 8h 05min
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
2:55-3:23
Light
3:23-3:51
Light
3:51-4:19
Moderate
4:19-4:47
Light
4:47-5:15
Moderate
5:15-5:43
Light
5:43-6:11
Smooth
6:11-6:39
Smooth
6:39-7:07
Light
7:07-7:35
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 (150°)
Sky
Few
Temperature
24°C
Conditions
VFR — Clear conditions, no delays expected
PRG
Václav Havel Airport Prague — Arrival
Wind
3 kt (130°)
Sky
Scattered
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:
- 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.