Your Flight
We analysed more than 3,000 data points along your route from San Diego International Airport, San Diego to Denver International Airport, Denver.
Southwest Airlines
SAN
DEN
WN3388
Southwest Airlines · Live forecast
SAN
→
DEN
Also sold as:
91
Calm Score
"A smooth ride ahead — sit back and enjoy."
9h 25m
Duration
740 nm
Distance
31,000 ft
Cruise Altitude
VERY HIGH
Confidence
Turbulence comfort along route
Comfort score combines turbulence probability with intensity — higher means rougher
Smooth
Light
Moderate
Severe
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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 SAN → DEN
15 pilot reports along this route
7 / 15
Reporting smooth
6 / 15
Light turbulence
2
Moderate or worse
Latest pilot reports
Smooth
ASE UA /OV DBL090030/TM 1744/FL200/TP SW4/TB NEG/IC NEG/RM MTW +/-200 ZDVWC-06
8m ago
Light
GUC UA /OV HBU170020/TM 1743/FL340/TP A321/TB OCNL LGT CHOP/RM ZDVWC-
9m ago
Smooth
DEN UA /OV DEN180007/TM 1743/FL080/TP A320/TA M09/IC LGT RIME BLO 120/RM DURD RY35L DEN
9m ago
Smooth
GUC UA /OV HBU260040/TM 1742/FL390/TP B787/RM LGT MTW ZDVWC
10m ago
Smooth
ALS UA /OV ALS350015/TM 1737/FL410/TP PRM1/RM MTW +30/-20KIAS ZDVWC
15m ago
AI-powered flight briefing
3,000 data points analyzed
· VERY HIGH confidence
Your Journey Beta
Your route takes you across the Sonoran Desert and over the Rocky Mountains – these areas 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 47 knots. These winds are favorable and may get you there a few 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 9h 25min
Maximum turbulence expected per segment
Takeoff
Smooth
0:30-1:00
Smooth
1:00-1:30
Smooth
1:30-2:00
Smooth
2:00-2:30
Smooth
2:30-3:00
Smooth
3:00-3:30
Smooth
3:30-4:00
Light
4:00-4:30
Light
4:30-5:00
Light
5:00-5:30
Light
5:30-6:00
Light
6:00-6:30
Light
6:30-6:59
Smooth
6:59-7:28
Smooth
7:28-7:57
Smooth
7:57-8:26
Light
8:26-8:55
Smooth
Landing
Smooth
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
SAN
San Diego International Airport — Departure
Wind
5 kt
Sky
Scattered
Temperature
19°C
Conditions
VFR — Clear conditions, no delays expected
DEN
Denver International Airport — Arrival
Visibility
1 mi
Wind
15 kt G25 (20°)
Sky
Overcast
Temperature
-1°C
Conditions
LIFR — Very poor visibility, significant delays expected
Your flight details
Departure timing and aircraft information
Morning Flight Departure
Time of day
Morning Flight
Tip
Morning flights typically experience smoother conditions as the atmosphere is more stable and thermal turbulence hasn't yet developed.
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.