United Airlines SEA IAH UA2135
United Airlines
FLIGHT
UA2135
SEA
Seattle–Tacoma International Airport
4 h 28 m
IAH
George Bush Intercontinental Houston Airport
Aircraft: b739 Altitude: 39,000ft (11.9km) Distance: 1,627 nm Duration: 4 h 28 m
AIRCRAFT
b739
ALTITUDE
39,000ft
DISTANCE
1,627 nm
DURATION
4 h 28 m
Times and gates subject to change. Verify with airline.
Turbulence Comfort Along Route Comfort View
Comfort Score: Combines turbulence probability (GTG forecast) with intensity (ZTI analysis). High scores indicate both high probability AND high intensity turbulence.
Smooth
Light
Moderate
Severe
Flight Smoothness Score
7.8 /10
Smoothness
Mostly Smooth
16%
Smooth
81%
Light
3%
Moderate
AI-Powered Flight Briefing
📊 6,000 data points analyzed HIGH Confidence
Your Flight

We analysed more than 6,000 data points along your route from Seattle–Tacoma International Airport, Seattle to George Bush Intercontinental Houston Airport, Houston.

Your Journey Beta

2 hours 25 minutes 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 Rocky Mountains – conditions there 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 calm conditions around the airport.

Winds Aloft

Winds at cruising altitude are about 81 knots. These winds are favorable and may get you there up to 25 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 proprietary turbulence prediction algorithm combining atmospheric Richardson Number, wind shear analysis, temperature gradients, and geomagnetic activity for precise, real-time forecasting. Learn more
Live data from ECMWF global forecast models • 12 atmospheric pressure levels analyzed • Updated every 6 hours
Flight Timeline 4h 28min
Maximum turbulence expected per segment
Takeoff
Smooth
0:20-0:49
Light
0:49-1:18
Light
1:18-1:47
Light
1:47-2:16
Light
2:16-2:44
Moderate
2:44-3:12
Light
3:12-3:40
Moderate
3:40-4:08
Light
Landing
Light
Smooth
Light
Moderate
Severe
Longer bars indicate higher turbulence intensity. Values shown are the maximum for each time segment.
Turbulence Metrics ZTI and EDR (scaled)
ZTI Scale
Smooth
<12
Light
12-30
Moderate
30-45
Severe
>45
EDR Scale
Smooth
<6
Light
6-24
Moderate
24-42
Severe
>42

Airport Weather
Departure
SEA
Forecast
4°C (Now)
Overcast • 9 kt • VFR — Clear conditions, no delays expected
Arrival
IAH
Forecast
13°C (Now)
Broken • 13 kt G23 • VFR — Clear conditions, no delays expected

Narrow-Body Aircraft (Medium)

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.

Looking for more detailed analysis?

Data Sources & Our Approach
ZeroTurb's Custom Algorithm: We've developed a proprietary ZeroTurb Index (ZTI) algorithm that combines three meteorological indices weighted by their predictive accuracy. This gives you transparent, passenger-focused turbulence probability instead of vague categories.

This forecast integrates data from:

Disclaimer: This forecast is for informational purposes only. Always consult official aviation weather sources and follow ATC guidance.

How accurate are turbulence alerts? Alerts are based on updated forecast models and pilot reports, and can change as departure approaches.