Your Flight
We analysed more than 7,000 data points along your route from Chicago O'Hare International Airport, Chicago to Juan Santamaría International Airport, San José (Alajuela).
United Airlines
ORD
SJO
UA1135
United Airlines · Live forecast
ORD
→
SJO
82
Calm Score
"A smooth ride ahead — sit back and enjoy."
4h 17m
Duration
1,930 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
Notifications not available
This flight has already departed.
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 ORD → SJO
3 pilot reports along this route
3 / 3
Reporting smooth
0 / 3
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
OWB UA /OV KOWB/TM 1545/FLUNKN/TP C550/SK OVC050/RM DURD RY 36
15m ago
Smooth
SDF UA /OV IIU180030/TM 1542/FL260/TP GLF6/TB NEG/IC NEG/RM DURC
18m ago
Smooth
OWB UA /OV OWB/TM 1541/FL195/TP B752/TB NEG/IC NEG/RM DURC
19m ago
AI-powered flight briefing
7,000 data points analyzed
· HIGH confidence
Your Journey Beta
1 hour 25 minutes and 2 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, and crossing the Caribbean Sea – 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 51 knots. These winds are favorable and may get you there up to 14 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 4h 17min
Maximum turbulence expected per segment
Takeoff
Light
0:20-0:48
Light
0:48-1:15
Light
1:15-1:42
Moderate
1:42-2:09
Moderate
2:09-2:36
Light
2:36-3:03
Light
3:03-3:30
Light
3:30-3:57
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
ORD
Chicago O'Hare International Airport — Departure
Wind
8 kt (150°)
Sky
Scattered
Temperature
20°C
Conditions
VFR — Clear conditions, no delays expected
SJO
Juan Santamaría International Airport — Arrival
Wind
13 kt (90°)
Sky
Few
Temperature
27°C
Conditions
VFR — Clear conditions, no delays expected
Your flight details
Departure timing and aircraft information
Afternoon Flight Departure
Time of day
Afternoon Flight
Tip
Afternoon flights may encounter more turbulence due to thermal activity as the sun heats the ground, creating rising air currents.
When
Today
boeing 737 max 8
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.