Frontier Airlines ATL IAH F91403
Frontier Airlines · Live forecast
ATL → IAH
F91403 · Apr 17, 2026 · 15:45 ED
Also sold as: UA521 United Airlines
90
Calm Score
"A smooth ride ahead — sit back and enjoy."
2h 34m
Duration
597 nm
Distance
30,000 ft
Cruise Altitude
HIGH
Confidence
Turbulence comfort along route
Comfort score combines turbulence probability with intensity — higher means rougher
Smooth Light Moderate Severe

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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 ATL → IAH
8 pilot reports along this route
7 / 8
Reporting smooth
0 / 8
Light turbulence
1
Moderate or worse
Latest pilot reports
Smooth
MLU UA /OV MLU180010/TM 2204/FL050/TP PRM1/SK BKN050-TOP070/RM DURC
11m ago
Smooth
ATL UA /OV LGC035025/TM 2156/FL450/TP GLF4/TB NEG/RM ZTLFD 27
19m ago
Moderate
LFT UA /OV LLA135025/TM 2150/FL450/TP GLF5/TB MOD/RM ZHU
25m ago
Smooth
LFT UA /OV LLA135025/TM 2150/FL400/TP C680/SK TOP/RM ZHU
25m ago
Smooth
ATL UA /OV EWA270040/TM 2148/FL370/TP A320/TB NEG/RM ZTLFD 08
27m ago
AI-powered flight briefing
2,500 data points analyzed · HIGH confidence
Your Flight

We analysed more than 2,500 data points along your route from Hartsfield-Jackson Atlanta International, Atlanta to George Bush Intercontinental Houston Airport, Houston.

Your Journey Beta

A brief bumpy patch may occur during cruise. It's nothing to worry about - just keep your seatbelt fastened.

Your route takes you over the Appalachian Mountains – conditions there 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 smooth, with calm conditions around the airport.

Winds Aloft

Winds at cruising altitude are about 57 knots. These winds may delay arrival by a few minutes.

Landing

Landing should feel a bit bumpy on descent 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
Live data from ECMWF global forecast models · 12 atmospheric pressure levels · Updated every 6 hours
Flight Timeline 2h 34min
Maximum turbulence expected per segment
Takeoff
Smooth
0:20-0:49
Smooth
0:49-1:18
Light
1:18-1:46
Smooth
1:46-2:14
Light
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
ATL Hartsfield-Jackson Atlanta International — Departure
Wind
11 kt (300°)
Sky
Few
Temperature
31°C
Conditions
VFR — Clear conditions, no delays expected
IAH George Bush Intercontinental Houston Airport — Arrival
Wind
15 kt G25 (160°)
Sky
Broken
Temperature
27°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:

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