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 23 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
11 pilot reports along this route
11 / 11
Reporting smooth
0 / 11
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP AFR343 4830N 05459W 0017 F390 M49 295/85 4849N 05204W 0029 4900N 05000W KT FHRBB QXS YDF 160017 L67A
7m ago
Smooth
ARP SAS928 4850N 05403W 0016 F290 M47 305/126 ELSIR 0027 5000N 05000W KT SEDMR DDL IG1 160016 J41A
8m ago
Smooth
ARP AFR343 4815N05652W 0009 F390 4849N05204W 0029 4900N05000W MS53 291/104 KT FHRBB QXS YDF 160009 L61A
15m ago
Smooth
ARP BRJ758 4656N05437W 0007 F450 NICSO 0019 4800N05000W MS51 294/68 KT OELUB DDL YQX 160007 F47A
17m ago
Smooth
ARP KLM272 4752N 05431W 0004 F390 M49 296/83 JOOPY 0437 4900N 05000W KT PHBKK QXT AME 160005 L10A
20m ago
AI-powered flight briefing
11,000 data points analyzed
· HIGH confidence
Your Journey Beta
A brief bumpy patch may occur during cruise. It's nothing to worry about - just keep your seatbelt fastened.
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 a bit bumpy initially, 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
Moderate
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
4°C
Conditions
VFR — Clear conditions, no delays expected
CDG
Charles De Gaulle — Arrival
Wind
10 kt (220°)
Sky
NSC
Temperature
9°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.