Delta Air Lines SYD LAX DL40
Delta Air Lines · Live forecast
SYD → LAX
DL40 · Mar 16, 2026 · 10:40 AED · airbus a350-941
88
Calm Score
"A smooth ride ahead — sit back and enjoy."
37h 0m
Duration
6,512 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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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.
AI-powered flight briefing
23,500 data points analyzed · HIGH confidence
Your Flight

We analysed more than 23,500 data points along your route from Sydney Kingsford Smith International Airport, Sydney (Mascot) to Los Angeles International Airport, Los Angeles.

Your Journey Beta

1 hour 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 Great Dividing Range, crossing the South Pacific Ocean, crossing the North Pacific Ocean, and over the Sierra Nevada – these areas can sometimes cause 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 40 knots. These winds are favorable and may get you there a few minutes early.

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 37h 00min
Maximum turbulence expected per segment
Takeoff
Light
0:30-1:00
Moderate
1:00-1:30
Light
1:30-2:00
Light
2:00-2:30
Light
2:30-3:00
Light
3:00-3:30
Light
3:30-4:00
Light
4:00-4:30
Smooth
4:30-5:00
Light
5:00-5:30
Light
5:30-6:00
Light
6:00-6:30
Smooth
6:30-7:00
Light
7:00-7:30
Light
7:30-8:00
Smooth
8:00-8:30
Light
8:30-9:00
Smooth
9:00-9:30
Light
9:30-10:00
Smooth
10:00-10:30
Light
10:30-11:00
Smooth
11:00-11:30
Light
11:30-12:00
Light
12:00-12:30
Smooth
12:30-13:00
Smooth
13:00-13:30
Smooth
13:30-14:00
Smooth
14:00-14:30
Smooth
14:30-15:00
Smooth
15:00-15:30
Light
15:30-16:00
Smooth
16:00-16:30
Smooth
16:30-17:00
Smooth
17:00-17:30
Smooth
17:30-18:00
Smooth
18:00-18:30
Smooth
18:30-19:00
Moderate
19:00-19:30
Moderate
19:30-20:00
Light
20:00-20:30
Light
20:30-21:00
Light
21:00-21:30
Smooth
21:30-22:00
Smooth
22:00-22:30
Moderate
22:30-23:00
Light
23:00-23:30
Smooth
23:30-24:00
Light
24:00-24:30
Light
24:30-25:00
Light
25:00-25:30
Light
25:30-26:00
Light
26:00-26:30
Light
26:30-27:00
Light
27:00-27:30
Light
27:30-28:00
Light
28:00-28:30
Light
28:30-29:00
Smooth
29:00-29:30
Smooth
29:30-30:00
Light
30:00-30:30
Light
30:30-31:00
Smooth
31:00-31:30
Light
31:30-32:00
Light
32:00-32:30
Light
32:30-33:00
Light
33:00-33:30
Light
33:30-34:00
Light
34:00-34:30
Light
34:30-35:00
Light
35:00-35:30
Light
35:30-36:00
Light
36:00-36:30
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
SYD Sydney Kingsford Smith International Airport — Departure
Wind
16 kt (50°)
Sky
NSC
Temperature
28°C
Conditions
VFR — Clear conditions, no delays expected
LAX Los Angeles International Airport — Arrival
Visibility
9 mi
Wind
5 kt (220°)
Sky
Scattered
Temperature
17°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.
airbus a350-941
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:

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