Jetblue LHR JFK B620
Jetblue · Live forecast
LHR → JFK
B620 · Sep 10, 2026 · 11:55 BS
79
Calm Score
"Mostly smooth - one short bumpy section you'll handle."
8h 24m
Duration
2,991 nm
Distance
40,000 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 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 → JFK
15 pilot reports along this route
15 / 15
Reporting smooth
0 / 15
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP N25NM 5248N03150W 1922 F450 5300N03000W 1929 5330N02000W MS52 247/62 KT N25NM DDL XXF 101922 F88A
4m ago
Smooth
ARP N650DW 5303N03915W 1922 F400 5301N04000W 1926 5201N05001W MS54 250/32 KT N650DW QXT IGW 101922 M15A
4m ago
Smooth
ARP RCH447 5437N03221W 1921 F320 5300N04000W 2003 5130N05000W MS45 252/45 KT 00222A DDL XXN 101921 F28A
5m ago
Smooth
ARP BAW7TG 5241N03915W 1921 F350 5230N04000W 1925 5000N05000W MS53 259/30 KT GVIIY DDL XXF 101922 F73A
5m ago
Smooth
ARP AFR52X 5256N01151W 1919 F340 DOGAL 1938 5500N02000W MS44 292/90 KT FHTYT QXS BYT 101919 J07A
7m 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 London Heathrow Airport, London to John F Kennedy International Airport, New York.

Your Journey Beta

3 hours 45 minutes, 6 hours 25 minutes, and 6 hours 40 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 crossing the North Atlantic Ocean and over the Appalachian Mountains – 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 a bit bumpy initially, with calm conditions around the airport.

Winds Aloft

Winds at cruising altitude are about 76 knots. These winds may delay arrival by up to 51 minutes.

Landing

Landing should feel a bit bumpy on descent 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 8h 24min
Maximum turbulence expected per segment
Takeoff
Moderate
0:30-1:00
Light
1:00-1:30
Light
1:30-2:00
Light
2:00-2:30
Light
2:30-3:00
Light
3:00-3:30
Light
3:30-4:00
Moderate
4:00-4:30
Light
4:30-5:00
Smooth
5:00-5:29
Smooth
5:29-5:58
Moderate
5:58-6:27
Moderate
6:27-6:56
Moderate
6:56-7:25
Moderate
7:25-7:54
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
12 kt (230°)
Sky
Broken
Temperature
18°C
Conditions
VFR - Clear conditions, no delays expected
JFK John F Kennedy International Airport - Arrival
Wind
8 kt (270°)
Sky
Scattered
Temperature
31°C
Conditions
VFR - Clear conditions, no delays expected
Your flight details
Departure timing and aircraft information
Morning Flight Departure
Time of day
Morning Flight
Tip
Morning flights typically experience smoother conditions as the atmosphere is more stable and thermal turbulence hasn't yet developed.
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.

Fly this route, calmly Game · Beta A calming mini-game, not a forecast. Glide LHR → JFK through soft clouds, nothing to crash into.