Your Flight
We analysed more than 12,000 data points along your route from John F Kennedy International Airport, New York to Copenhagen Kastrup Airport, Copenhagen.
Delta Air Lines
JFK
CPH
DL218
Delta Air Lines · Live forecast
JFK
→
CPH
93
Calm Score
"A smooth ride ahead — sit back and enjoy."
7h 55m
Duration
3,342 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
Set an alert before your flight
Beta
You still have 20 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 → CPH
15 pilot reports along this route
14 / 15
Reporting smooth
0 / 15
Light turbulence
1
Moderate or worse
Latest pilot reports
Smooth
ARP UAL970 5303N05159W 0021 F350 5358N04958W 0032 5558N03959W MS44 346/10 KT N12004 DDL YAY 020021 L95A
4m ago
Smooth
ARP ACA840 5157N05007W 0003 F370 5200N05000W 0003 5459N04000W MS43 207/14 KT CGHKC DDL YQX 020003 J33A
22m ago
Smooth
ARP DAL132 5408N04928W 0002 F370 5600N04000W 0043 5800N03000W MS43 168/8 KT N508DN DDL YAY 020002 J78A
23m ago
Smooth
ARP UAL962 5158N05010W 0002 F350 5200N05000W 0003 5500N04000W MS46 191/16 KT N673UA QXS YAY 020002 F74A
23m ago
Smooth
ARP GTI6081 5924N01732W 2359 F320 6001N01959W 0010 6101N03000W MS52 245/11 KT N476MC DDL IG1 012359 F40A
26m ago
AI-powered flight briefing
12,000 data points analyzed
· HIGH confidence
Your Journey Beta
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 smooth with possible light bumps, with calm conditions around the airport.
Winds Aloft
Winds at cruising altitude are about 21 knots.
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 55min
Maximum turbulence expected per segment
Takeoff
Light
0:30-1:00
Light
1:00-1:30
Smooth
1:30-2:00
Smooth
2:00-2:30
Smooth
2:30-3:00
Smooth
3:00-3:30
Smooth
3:30-4:00
Smooth
4:00-4:30
Smooth
4:30-5:00
Smooth
5:00-5:29
Smooth
5:29-5:58
Light
5:58-6:27
Light
6:27-6:56
Light
6:56-7:25
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
10 kt (230°)
Sky
Scattered
Temperature
15°C
Conditions
VFR — Clear conditions, no delays expected
CPH
Copenhagen Kastrup Airport — Arrival
Wind
6 kt (200°)
Sky
Few
Temperature
13°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
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.