Your Flight
We analysed more than 10,500 data points along your route from Lisbon Humberto Delgado Airport, Lisbon to John F Kennedy International Airport, New York.
Delta Air Lines
LIS
JFK
DL273
Delta Air Lines · Live forecast
LIS
→
JFK
83
Calm Score
"A smooth ride ahead — sit back and enjoy."
7h 47m
Duration
2,918 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
Set an alert before your flight
Beta
You still have 7 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 LIS → JFK
9 pilot reports along this route
9 / 9
Reporting smooth
0 / 9
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP ACA834 4459N03947W 0111 F390 4330N03000W 0203 4230N02000W MS60 283/51 KT CGHLM DDL XXH 270111 J87A
6m ago
Smooth
ARP DAL250 4307N05503W 0111 F370 4400N05000W 0137 4500N04000W MS51 270/63 KT N827NW DDL YQY 270111 J33A
6m ago
Smooth
ARP UAL350 4507N04534W 0109 F370 4500N04000W 0137 4300N03000W MS52 284/57 KT N17104 DDL IG1 270109 F16A
8m ago
Smooth
ARP TSC602 4524N04853W 0108 F390 4800N04000W 0155 5000N03000W MS57 283/67 KT CGUBT QXS YYT 270108 J57A
9m ago
Smooth
ARP UAL350 4504N04825W 0055 F370 4500N04000W 0137 4300N03000W MS51 285/52 KT N17104 DDL IG1 270055 F12A
22m ago
AI-powered flight briefing
10,500 data points analyzed
· HIGH confidence
Your Journey Beta
4 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 crossing the North Atlantic Ocean and over the Appalachian Mountains – 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 smooth with possible light bumps, with calm conditions around the airport.
Winds Aloft
Winds at cruising altitude are about 48 knots. These winds may delay arrival by up to 33 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
Flight Timeline 7h 47min
Maximum turbulence expected per segment
Takeoff
Light
0:30-1:00
Light
1:00-1:29
Light
1:29-1:58
Light
1:58-2:27
Smooth
2:27-2:56
Smooth
2:56-3:25
Light
3:25-3:54
Light
3:54-4:23
Moderate
4:23-4:52
Light
4:52-5:21
Light
5:21-5:50
Light
5:50-6:19
Light
6:19-6:48
Light
6:48-7:17
Light
Landing
Moderate
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
LIS
Lisbon Humberto Delgado Airport — Departure
Wind
5 kt (310°)
Sky
Few
Temperature
20°C
Conditions
VFR — Clear conditions, no delays expected
JFK
John F Kennedy International Airport — Arrival
Wind
7 kt (170°)
Sky
Broken
Temperature
22°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
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.