Your Flight
We analysed more than 11,000 data points along your route from John F Kennedy International Airport, New York to London Heathrow Airport, London.
British Airways
JFK
LHR
BA9603
British Airways · Live forecast
JFK
→
LHR
75
Calm Score
"Mostly smooth — one short bumpy section you'll handle."
6h 43m
Duration
2,991 nm
Distance
39,000 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 21 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 JFK → LHR
15 pilot reports along this route
14 / 15
Reporting smooth
1 / 15
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP HBJLM 4941N05116W 0027 F390 5000N05000W 0033 5300N04000W MS62 302/65 KT HBJLM QXS YYT 170027 M57A
6m ago
Smooth
ARP SWR87F 5159N05000W 0026 F410 5200N05000W 0026 5259N04000W MS62 290/107 KT HBIFB DDL YQX 170026 J77A
7m ago
Smooth
JFK UUA /OV JFK040001/TM 0025/FL004/TP A321/RM LLWS +/-10 KT SHORT FINAL RWY 22R
8m ago
Smooth
ARP CMB538 4910N 04850W 0025 F350 M58 321/103 5000N 04000W 0107 5100N 03000W KT N423AX QXT IGW 170025 F49A
8m ago
Smooth
ARP ACA874 4908N 04849W 0024 F390 M64 307/70 4958N 04000W 0105 5058N 03000W KT CGHKC DDL YYT 170024 J20A
9m ago
AI-powered flight briefing
11,000 data points analyzed
· HIGH confidence
Your Journey Beta
1 hour, 1 hour 45 minutes, and 6 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 Appalachian Mountains and crossing the North Atlantic Ocean – these areas 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 86 knots. These winds are favorable and may get you there up to 45 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 6h 43min
Maximum turbulence expected per segment
Takeoff
Light
0:30-0:59
Light
0:59-1:28
Moderate
1:28-1:57
Moderate
1:57-2:26
Light
2:26-2:55
Moderate
2:55-3:24
Moderate
3:24-3:53
Light
3:53-4:21
Light
4:21-4:49
Moderate
4:49-5:17
Moderate
5:17-5:45
Light
5:45-6:13
Moderate
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
JFK
John F Kennedy International Airport — Departure
Visibility
2 mi
Wind
21 kt G30 (280°)
Sky
Scattered
Temperature
10°C
Conditions
LIFR — Very poor visibility, significant delays expected
LHR
London Heathrow Airport — Arrival
Wind
9 kt (220°)
Sky
Broken
Temperature
10°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
a339
Category
Wide-Body Aircraft
Size
Large
Comfort
Large, twin-aisle aircraft like this generally provide the smoothest ride through turbulence due to their size, weight, and advanced stabilization systems.
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.