Your Flight
We analysed more than 3,500 data points along your route from Harry Reid International Airport, Las Vegas to Sioux Falls Regional Airport / Joe Foss Field, Sioux Falls.
Allegiant Air
LAS
FSD
G418
Allegiant Air · Live forecast
LAS
→
FSD
76
Calm Score
"Mostly smooth — one short bumpy section you'll handle."
4h 53m
Duration
958 nm
Distance
35,000 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 20 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 LAS → FSD
7 pilot reports along this route
5 / 7
Reporting smooth
1 / 7
Light turbulence
1
Moderate or worse
Latest pilot reports
Smooth
GJT UA /OV JNC160035/TM 0131/FL430/TP GLF6/TB CONS LGT OCNL MOD/RM ZDVWC-04
24m ago
Smooth
ARP UAL1700 4004N 10755W 0130 F310 347/137KT TB SMTH IC
25m ago
Light
CYS UA /OV CYS/TM 0130/FL260/TP A321/TB LGT CHOP/RM ZDVWC-21
25m ago
Smooth
ARP UAL2415 4331N 09718W 0127 F340 285/023 TB SMTH IC
28m ago
Smooth
VGT UA /OV LAS321012/TM 0126/FLDURD/TP PC12/TB NEG
29m ago
AI-powered flight briefing
3,500 data points analyzed
· HIGH confidence
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 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 possible light bumps, with calm conditions around the airport.
Winds Aloft
Winds at cruising altitude are about 96 knots.
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
Flight Timeline 4h 53min
Maximum turbulence expected per segment
Takeoff
Light
0:30-1:00
Light
1:00-1:29
Light
1:29-1:58
Light
1:58-2:27
Light
2:27-2:56
Light
2:56-3:25
Moderate
3:25-3:54
Light
3:54-4:23
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
LAS
Harry Reid International Airport — Departure
Wind
9 kt (40°)
Sky
Scattered
Temperature
26°C
Conditions
VFR — Clear conditions, no delays expected
FSD
Sioux Falls Regional Airport / Joe Foss Field — Arrival
Visibility
6 mi
Wind
28 kt G40 (340°)
Sky
Overcast
Temperature
-11°C
Conditions
MVFR — Reduced visibility, minor delays possible
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
airbus a319-112
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.