American Airlines LHR MIA AA9818
American Airlines · Live forecast
LHR → MIA
AA9818 · Jun 1, 2026 · 21:00 BS
77
Calm Score
"Mostly smooth — one short bumpy section you'll handle."
10h 10m
Duration
3,839 nm
Distance
40,000 ft
Cruise Altitude
VERY HIGH
Confidence
Turbulence comfort along route
Comfort score combines turbulence probability with intensity — higher means rougher
Smooth Light Moderate Severe

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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 LHR → MIA
7 pilot reports along this route
7 / 7
Reporting smooth
0 / 7
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP RCH446 5027N02636W 2051 F330 5100N02000W 2118 DINIM MS44 264/110 KT 21101A DDL XXN 012052 F42A
10m ago
Smooth
ARP IBE03KK 4558N05006W 2049 F400 SUPRY 2101 4334N06700W MS44 239/43 KT ECLYF DDL XXN 012049 J02A
12m ago
Smooth
ARP N625SC 4228N05757W 2040 F410 4359N04959W 2119 4659N03959W MS52 256/63 KT N625SC DDL YQY 012040 M52A
21m ago
Smooth
ARP UBT70M 5350N01403W 2039 F360 DOGAL 2044 5501N02000W MS41 296/23 KT GCKWN QXT EUA 012040 L29A
22m ago
Smooth
ARP UBT70M 5341N01314W 2036 F360 DOGAL 2044 5501N02000W MS41 290/22 KT GCKWN QXS BLY 012036 L28A
25m ago
AI-powered flight briefing
14,000 data points analyzed · VERY HIGH confidence
Your Flight

We analysed more than 14,000 data points along your route from London Heathrow Airport, London to Miami International Airport, Miami.

Your Journey Beta

4 hours 30 minutes, 6 hours 50 minutes, and 8 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 – conditions there 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 may delay arrival by up to 78 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
Live data from ECMWF global forecast models · 12 atmospheric pressure levels · Updated every 6 hours
Flight Timeline 10h 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
3:24-3:53
Light
3:53-4:22
Light
4:22-4:51
Moderate
4:51-5:20
Light
5:20-5:49
Light
5:49-6:18
Light
6:18-6:47
Light
6:47-7:16
Moderate
7:16-7:45
Light
7:45-8:14
Moderate
8:14-8:43
Light
8:43-9:12
Moderate
9:12-9:40
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
LHR London Heathrow Airport — Departure
Wind
13 kt G23 (220°)
Sky
Broken
Temperature
17°C
Conditions
MVFR — Reduced visibility, minor delays possible
MIA Miami International Airport — Arrival
Wind
4 kt (280°)
Sky
Broken
Temperature
33°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:

Disclaimer: This forecast is for informational purposes only. Always consult official aviation weather sources and follow ATC guidance.