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.
JFK
John F Kennedy International Airport
✈
LHR
London Heathrow Airport
Route Information
Departure
JFK (JFK)
Distance
5,539.7 km (2,991.2 nautical miles)
Arrival
LHR (LHR)
Flight Time
440 minutes (7h 20m)
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 JFK → LHR
15 pilot reports along this route
15 / 15
Reporting smooth
0 / 15
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP N787FZ 5501N02952W 2246 F400 5500N03000W 2247 5400N04000W MS56 298/30 KT N787FZ DDL IG1 162246 M20A
7m ago
Smooth
ARP DLH401 4935N05137W 2245 F350 4958N04959W 2253 5158N03959W MS43 209/66 KT DAIHY DDL YYT 162245 J61A
8m ago
Smooth
ARP VIR25B 5351N04217W 2244 F380 5300N05000W 2322 PELTU MS53 347/77 KT GVBZZ DDL XXN 162244 L79A
9m ago
Smooth
ARP RCH347 5324N03334W 2243 F300 5200N04000W 2316 5000N05000W MS35 293/17 KT 60007A DDL XXN 162243 F73A
10m ago
Smooth
ARP IBE03YY 5003N04857W 2242 F340 5001N05000W 2248 4931N05200W MS42 205/96 KT ECONR DDL IG1 162243 J72A
11m ago
AI-powered flight briefing
11,000 data points analyzed
· VERY HIGH confidence
Your Journey Beta
A brief bumpy patch may occur during cruise. It's nothing to worry about - just keep your seatbelt fastened.
Your route takes you over the Appalachian Mountains and crossing the North Atlantic Ocean – 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 a bit bumpy initially, with calm conditions around the airport.
Winds Aloft
Winds at cruising altitude are about 44 knots. These winds are favorable and may get you there up to 20 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 7h 20min
Maximum turbulence expected per segment
Takeoff
Moderate
0:30-1:00
Light
1:00-1:30
Light
1:30-2:00
Light
2:00-2:29
Light
2:29-2:58
Light
2:58-3:27
Light
3:27-3:56
Light
3:56-4:25
Light
4:25-4:54
Smooth
4:54-5:23
Light
5:23-5:52
Light
5:52-6:21
Light
6:21-6:50
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
JFK
John F Kennedy International Airport — Departure
Visibility
6 mi
Wind
15 kt G35 (200°)
Sky
Broken
Temperature
28°C
Conditions
MVFR — Reduced visibility, minor delays possible
LHR
London Heathrow Airport — Arrival
Wind
5 kt (30°)
Sky
NSC
Temperature
22°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.