British Airways JFK LHR BA9603
British Airways · Live forecast
JFK → LHR
BA9603 · Mar 17, 2026 · 18:00 ED
77
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
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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 DLH411 5207N03857W 0219 F400 5258N02959W 0257 5358N02000W MS50 319/71 KT DAIXV DDL XXH 170219 J06A
2m ago
Smooth
ARP UAL16 5146N04317W 0219 F370 5200N04000W 0234 5300N03000W MS61 334/143 KT N684UA DDL X4A 170219 F30A
2m ago
Smooth
ARP UAL921 5343N04150W 0219 F310 5200N05000W 0307 TUDEP MS48 319/176 KT N674UA DDL XXN 170219 F72A
2m ago
Smooth
ARP CMB539 5351N03149W 0219 F340 5300N03000W 0229 5200N02000W MS47 281/19 KT N344KD DDL XXN 170219 F34A
2m ago
Smooth
ARP CFG017 5401N01845W 0219 F390 DOGAL 0235 BEXET MS46 221/76 KT DANRI QXT IGW 170219 J53A
2m ago
AI-powered flight briefing
11,000 data points analyzed · HIGH confidence
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.

Your Journey Beta

2 hours, 2 hours 20 minutes, and 2 hours 30 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 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
Live data from ECMWF global forecast models · 12 atmospheric pressure levels · Updated every 6 hours
Flight Timeline 6h 43min
Maximum turbulence expected per segment
Takeoff
Light
0:30-0:59
Moderate
0:59-1:28
Light
1:28-1:57
Moderate
1:57-2:26
Moderate
2:26-2:55
Moderate
2:55-3:24
Light
3:24-3:53
Moderate
3:53-4:21
Light
4:21-4:49
Light
4:49-5:17
Light
5:17-5:45
Light
5:45-6:13
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
0 mi
Wind
21 kt G30 (280°)
Sky
Scattered
Temperature
9°C
Conditions
LIFR — Very poor visibility, significant delays expected
LHR London Heathrow Airport — Arrival
Wind
10 kt (220°)
Sky
Unknown
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
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:

Disclaimer: This forecast is for informational purposes only. Always consult official aviation weather sources and follow ATC guidance.