Your Flight
We analysed more than 6,500 data points along your route from San Francisco International Airport, San Francisco to McGhee Tyson Airport, Alcoa.
SFO
San Francisco International Airport
✈
TYS
McGhee Tyson Airport
Route Information
Departure
SFO (SFO)
Distance
3,403.2 km (1,837.6 nautical miles)
Arrival
TYS (TYS)
Estimated Flight Time
266 minutes (4h 26m)
Flight Profile
Cruise Altitude: 39,000 ft (Flight Level 390)
Route calculated using great circle navigation
Turbulence comfort along route
Comfort score combines turbulence probability with intensity — higher means rougher
Smooth
Light
Moderate
Severe
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 SFO → TYS
6 pilot reports along this route
2 / 6
Reporting smooth
2 / 6
Light turbulence
2
Moderate or worse
Latest pilot reports
Smooth
PUB UA /OV PUB157017/TM 1230/FL270/TP B350/TB NEG/RM ZDVWC-29
11m ago
Smooth
MKL UA /OV MKL090045/TM 1230/FL080/TP S22T/SK TOP080/TA M13/IC LGT RIME/RM ZME
11m ago
Light
PUB UA /OV PUB337017/TM 1226/FL150/TP B737/TB CONS LGT CHOP/RM DURC. ZDVWC
15m ago
Smooth
BNA UA /OV BNA225045/TM 1224/FL350/TP A20N/TB CONS LGT OCNL MOD CHOP/RM ZME 61
17m ago
Light
GUC UA /OV HBU/TM 1222/FL290/TP CRJ2/TB INTMT LGT CHOP/RM ZDVWC-
19m ago
AI-powered flight briefing
6,500 data points analyzed
· VERY HIGH confidence
Your Journey Beta
1 hour, 1 hour 35 minutes, and 3 hours 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 Sierra Nevada, over the Rocky Mountains, and over the Appalachian Mountains – these areas can sometimes cause 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 80 knots. These winds are favorable and may get you there up to 19 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 4h 26min
Maximum turbulence expected per segment
Takeoff
Light
0:20-0:49
Moderate
0:49-1:18
Moderate
1:18-1:46
Moderate
1:46-2:14
Light
2:14-2:42
Light
2:42-3:10
Moderate
3:10-3:38
Light
3:38-4:06
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
SFO
San Francisco International Airport — Departure
Wind
3 kt (0°)
Sky
Few
Temperature
13°C
Conditions
VFR — Clear conditions, no delays expected
TYS
McGhee Tyson Airport — Arrival
Wind
13 kt G25 (240°)
Sky
Overcast
Temperature
11°C
Conditions
VFR — Clear conditions, no delays expected
Your flight details
Departure timing and aircraft information
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.