Southwest Airlines
DEN
IAD
WN2135
Southwest Airlines · Live forecast
DEN
→
IAD
100
Calm Score
"A smooth ride ahead — sit back and enjoy."
5h 20m
Duration
1,259 nm
Distance
35,000 ft
Cruise Altitude
VERY HIGH
Confidence
Set an alert before your flight
Beta
You still have 10 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 DEN → IAD
9 pilot reports along this route
6 / 9
Reporting smooth
1 / 9
Light turbulence
2
Moderate or worse
Latest pilot reports
Smooth
ASE UA /OV DBL072067/TM 1315/FL230/TP E75L/TB LGT-MOD 195-215 NEG ABV 220/RM ZDVWC-06
11m ago
Smooth
DFI UA /OV FBC329035 /TM 1315 /FL360 /TP B38M /SK OVC /TA M31 /WV 205146KT /RM PRODUCED BY SKYPATH
11m ago
Moderate
OKK UA /OV OKK/TM 1314/FL340/TP B738/TB CONS MOD FL340-INTMT LGT CHOP FL300
12m ago
Smooth
EGE UA /OV RLG082030/TM 1313/FL260/TP BCS3/TA M09/TB NEG/IC NEG/RM IMC. ZDVWC-06
13m ago
Smooth
BMI UA /OV KBMI/TM 1312/FL018/TP A319/SK OVC018 TOP035/RM DURD RY29
14m ago
Airport conditions
Live weather at departure and arrival
DEN
Denver International Airport — Departure
Wind
7 kt (40°)
Sky
Broken
Temperature
-12°C
Conditions
VFR — Clear conditions, no delays expected
IAD
Washington Dulles International Airport — Arrival
Wind
14 kt G24 (290°)
Sky
Broken
Temperature
18°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
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.