Your Flight
We analysed more than 7,500 data points along your route from Toronto Lester B. Pearson International Airport, Toronto to Juan Santamaría International Airport, San José (Alajuela).
Air Transat
YYZ
SJO
TS112
Air Transat · Live forecast
YYZ
→
SJO
31
Calm Score
"A bumpy ride ahead — stay buckled and breathe."
3h 30m
Duration
2,036 nm
Distance
40,000 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 → SJO
13 pilot reports along this route
4 / 13
Reporting smooth
2 / 13
Light turbulence
7
Moderate or worse
Latest pilot reports
Smooth
BUF UA /OV BUF360005/TM 0153/FL011/TP BCS3/SK BKN011/WV +/- 8KTS/RM BRAKING ACTION MEDIUM RUNWAY 23
10m ago
Light
TPA UA /OV TPS320080/TM 0150/FL410/TP BE40/TB CONS LGT CHOP/RM +-20KNOTS
13m ago
Smooth
GNV UA /OV GNV360035/TM 0148/FL280/TP B738/TB NEG
15m ago
Smooth
YZ UUA /OV CYYZ 270005 /TM 0145 /FL310 /TP A340 /TB MOD-SEV /RM CHOP
18m ago
Moderate
PIT UA /OV PIT135035/TM 0144/FL130/TP E175/TB MOD/RM MOD TURB DURD 130 -115
19m ago
AI-powered flight briefing
7,500 data points analyzed
· HIGH confidence
Your Journey Beta
16 minutes and 1 hour into the flight: Expect more intense turbulence. Keep your seatbelt fastened.
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, crossing the Gulf of Mexico, crossing the Florida Straits, and crossing the Caribbean Sea – these areas can sometimes cause turbulence.
Buckle Up
We're expecting some turbulence during this flight. Please keep your seatbelt fastened. Remember: turbulence is uncomfortable but aircraft handle it safely. Pilots often adjust altitude or route to find smoother air.
Takeoff
Takeoff should feel a bit bumpy initially, with calm conditions around the airport.
Winds Aloft
Standard wind conditions expected at cruising altitude.
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 3h 30min
Maximum turbulence expected per segment
Takeoff
Moderate
0:20-0:49
Severe
0:49-1:18
Severe
1:18-1:46
Moderate
1:46-2:14
Severe
2:14-2:42
Moderate
2:42-3:10
Moderate
Landing
Moderate
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
SJO
Juan Santamaría International Airport — Arrival
Wind
8 kt (80°)
Sky
Scattered
Temperature
22°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.