Your Flight
We analysed more than 13,000 data points along your route from Hartsfield-Jackson Atlanta International, Atlanta to London Heathrow Airport, London.
Delta Air Lines
ATL
LHR
DL30
Delta Air Lines · Live forecast
ATL
→
LHR
79
Calm Score
"Mostly smooth — one short bumpy section you'll handle."
8h 10m
Duration
3,651 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
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Beta
You still have 18 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 ATL → LHR
9 pilot reports along this route
9 / 9
Reporting smooth
0 / 9
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP BAW2LJ 4911N 04835W 0459 F410 M49 294/71 4959N 04000W 0536 5259N 03000W KT GZBJM DDL YYT 160459 L74A
4m ago
Smooth
ARP UAL972 5234N02529W 0459 F380 5300N02000W 0520 MALOT MS55 236/102 KT N14019 DDL XXF 160459 L18A
4m ago
Smooth
ARP TSC434 5440N 02532W 0455 F330 M56 229/130 5400N 02000W 0519 MALOT KT CGOKH QXT IGW 160456 J25A
8m ago
Smooth
ARP SAS930 5049N04856W 0454 F390 5300N04000W 0535 5500N03000W MS50 296/64 KT LNRKU DDL YYT 160454 J45A
9m ago
Smooth
ARP DAL136 5118N04847W 0453 F330 5300N04000W 0533 5400N03000W MS49 298/66 KT N806NW DDL YAY 160453 J21A
10m ago
AI-powered flight briefing
13,000 data points analyzed
· HIGH confidence
Your Journey Beta
2 hours 25 minutes, 3 hours 40 minutes, and 4 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 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 75 knots. These winds are favorable and may get you there up to 59 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 8h 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
Moderate
2:55-3:24
Light
3:24-3:53
Moderate
3:53-4:22
Light
4:22-4:51
Moderate
4:51-5:20
Light
5:20-5:48
Light
5:48-6:16
Light
6:16-6:44
Light
6:44-7:12
Light
7:12-7:40
Moderate
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
ATL
Hartsfield-Jackson Atlanta International — Departure
Wind
16 kt G28 (300°)
Sky
Scattered
Temperature
20°C
Conditions
VFR — Clear conditions, no delays expected
LHR
London Heathrow Airport — Arrival
Wind
10 kt (270°)
Sky
Few
Temperature
5°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.