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.
American Airlines
JFK
LHR
AA100
American Airlines · Live forecast
JFK
→
LHR
79
Calm Score
"Mostly smooth — one short bumpy section you'll handle."
6h 50m
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
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Beta
You still have 18 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
15 / 15
Reporting smooth
0 / 15
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP BAW81V 5401N01813W 0517 F400 DOGAL 0529 BEXET MS57 256/80 KT GZBKN DDL XXF 160517 L21A
2m ago
Smooth
ARP SIA25 5256N03017W 0516 F350 5300N03000W 0517 5400N02000W MS47 217/86 KT 9VSWO QXT AME 160516 F73A
3m ago
Smooth
ARP CLX251 5158N03004W 0516 F360 5200N03000W 0517 5259N02000W MS49 217/84 KT LXVCI QXT AME 160516 F64A
3m ago
Smooth
ARP DLH4W 5207N02903W 0516 F390 5259N02000W 0552 MALOT MS49 222/68 KT DAIVD DDL XXH 160516 J04A
3m ago
Smooth
ARP N322FJ 5200N01919W 0516 F410 5159N01500W 0534 5159N01400W MS61 259/69 KT N322FJ QXT IGW 160516 A39A
3m ago
AI-powered flight briefing
11,000 data points analyzed
· HIGH confidence
Your Journey Beta
5 hours 35 minutes 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 72 knots. These winds are favorable and may get you there up to 44 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 50min
Maximum turbulence expected per segment
Takeoff
Light
0:30-1:00
Light
1:00-1:30
Light
1:30-1:59
Light
1:59-2:28
Light
2:28-2:57
Light
2:57-3:26
Light
3:26-3:55
Light
3:55-4:24
Light
4:24-4:53
Light
4:53-5:22
Light
5:22-5:51
Moderate
5:51-6:20
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
Wind
23 kt G40 (170°)
Sky
Overcast
Temperature
8°C
Conditions
VFR — Clear conditions, no delays expected
LHR
London Heathrow Airport — Arrival
Wind
10 kt (270°)
Sky
Few
Temperature
5°C
Conditions
VFR — Clear conditions, no delays expected
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
N721AN
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.