Your Flight
We analysed more than 11,000 data points along your route from Logan International, Boston to Charles De Gaulle, Paris (Roissy-en-France, Val-d'Oise).
Delta Air Lines
BOS
CDG
DL9924
Delta Air Lines · Live forecast
BOS
→
CDG
78
Calm Score
"Mostly smooth — one short bumpy section you'll handle."
7h 10m
Duration
2,990 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 17 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 BOS → CDG
15 pilot reports along this route
15 / 15
Reporting smooth
0 / 15
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP CLX251 5300N01821W 0602 F360 5259N01500W 0615 5259N01400W MS59 252/93 KT LXVCI QXT AME 160602 F84A
3m ago
Smooth
ARP AAL70 5035N04517W 0600 F390 5100N04000W 0622 5400N03000W MS47 283/44 KT N833AA DDL XXH 160600 L66A
5m ago
Smooth
ARP VIR92MC 5159N 01844W 0600 F380 M63 254/86 5158N 01500W 0615 XETBO KT GVLUX DDL XXF 160600 J32A
5m ago
Smooth
ARP AAL174 5033N 03518W 0559 F390 M43 233/61 5159N 03000W 0623 5259N 02000W KT N798AN DDL XXN 160559 F83A
6m ago
Smooth
ARP LOT16M 4940N05447W 0558 F390 ALLRY 0611 5100N05000W MS53 291/108 KT SPLRG DDL YDF 160558 L42A
7m ago
AI-powered flight briefing
11,000 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.
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 71 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 7h 10min
Maximum turbulence expected per segment
Takeoff
Light
0:30-0:59
Light
0:59-1:28
Light
1:28-1:57
Light
1:57-2:26
Light
2:26-2:55
Light
2:55-3:24
Light
3:24-3:52
Light
3:52-4:20
Light
4:20-4:48
Light
4:48-5:16
Light
5:16-5:44
Light
5:44-6:12
Light
6:12-6:40
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
BOS
Logan International — Departure
Wind
14 kt G31 (180°)
Sky
Overcast
Temperature
3°C
Conditions
VFR — Clear conditions, no delays expected
CDG
Charles De Gaulle — Arrival
Wind
15 kt (240°)
Sky
Broken
Temperature
8°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
a359
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.