Your Flight
We analysed more than 17,000 data points along your route from London Heathrow Airport, London to San Diego International Airport, San Diego.
LHR
London Heathrow Airport
✈
SAN
San Diego International Airport
Route Information
Departure
LHR (LHR)
Distance
8,806.9 km (4,755.3 nautical miles)
Arrival
SAN (SAN)
Flight Time
680 minutes (11h 20m)
Flight Profile
Cruise Altitude: 40,000 ft (Flight Level 400)
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 they don't put the aircraft in danger. Many passengers feel exactly the same way.
Right now on your route
Live pilot reports from aircraft flying LHR → SAN
9 pilot reports along this route
9 / 9
Reporting smooth
0 / 9
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP UPS232 5623N01647W 0425 F300 5700N02000W 0440 5900N03000W MS42 317/30 KT N313UP QXT IGW 270425 F56A
1m ago
Smooth
ARP UAL953 6104N03423W 0423 F370 6059N03000W 0438 6059N02000W MS52 278/22 KT N26909 DDL KUS 270423 L85A
3m ago
Smooth
ARP UAL972 6003N03259W 0422 F350 5958N03000W 0432 5858N02001W MS53 282/34 KT N12021 DDL XXF 270422 L88A
4m ago
Smooth
ARP AAL150P 6004N03259W 0420 F390 5959N03000W 0430 5900N02000W MS48 274/32 KT N882BL QXT EUA 270420 L93A
6m ago
Smooth
ARP UAL972 6004N03500W 0415 F350 5958N03000W 0432 5858N02001W MS54 281/30 KT N12021 DDL XXF 270415 L85A
11m ago
AI-powered flight briefing
17,000 data points analyzed
· HIGH confidence
Your Journey Beta
2 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 crossing the North Atlantic Ocean, over the Rocky Mountains, and across the Sonoran Desert – these areas can sometimes cause turbulence.
Smooth Flight
We're expecting smooth conditions throughout your flight. You can sit back and relax.
Takeoff
Takeoff should feel smooth with possible light bumps, with calm conditions around the airport.
Winds Aloft
Winds at cruising altitude are about 34 knots. These winds may delay arrival by up to 30 minutes.
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 11h 20min
Maximum turbulence expected per segment
Takeoff
Light
0:30-1:00
Light
1:00-1:30
Light
1:30-2:00
Moderate
2:00-2:30
Light
2:30-3:00
Smooth
3:00-3:30
Smooth
3:30-4:00
Smooth
4:00-4:30
Smooth
4:30-5:00
Light
5:00-5:30
Light
5:30-6:00
Light
6:00-6:29
Light
6:29-6:58
Light
6:58-7:27
Light
7:27-7:56
Smooth
7:56-8:25
Light
8:25-8:54
Light
8:54-9:23
Light
9:23-9:52
Light
9:52-10:21
Light
10:21-10:50
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
LHR
London Heathrow Airport - Departure
Wind
5 kt (70°)
Sky
Unknown
Temperature
20°C
Conditions
VFR - Clear conditions, no delays expected
SAN
San Diego International Airport - Arrival
Wind
4 kt (350°)
Sky
Broken
Temperature
25°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.