Delta Air Lines PVG SEA DL280
Delta Air Lines · Live forecast
PVG → SEA
DL280 · Sep 10, 2026 · 17:30 CS
51
Calm Score
"Some bumps expected - keep your seatbelt fastened."
35h 11m
Duration
4,961 nm
Distance
39,000 ft
Cruise Altitude
MEDIUM
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 they don't put the aircraft in danger. Many passengers feel exactly the same way.
AI-powered flight briefing
18,000 data points analyzed
Your Flight

We analysed more than 18,000 data points along your route from Shanghai Pudong International Airport, Shanghai (Pudong) to Seattle–Tacoma International Airport, Seattle.

Your Journey Beta

Some bumpy patches are scattered throughout the flight. Keep your seatbelt fastened when seated.

Your route takes you crossing the North Pacific Ocean and crossing the North Pacific Ocean – these areas can sometimes cause light turbulence.

Some Bumps Ahead

There are a couple of short sections with bumps, but nothing out of the ordinary. Turbulence can feel uncomfortable, but it is not dangerous. Aircraft are designed to handle it easily. Pilots often adjust altitude or route to find smoother air.

Takeoff

Takeoff should feel smooth, with calm conditions around the airport.

Winds Aloft

Standard wind conditions expected at cruising altitude.

Landing

Landing should feel smooth 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 35h 11min
Maximum turbulence expected per segment
Takeoff
Smooth
0:30-1:00
Smooth
1:00-1:30
Light
1:30-2:00
Moderate
2:00-2:30
Moderate
2:30-3:00
Light
3:00-3:30
Moderate
3:30-4:00
Moderate
4:00-4:30
Moderate
4:30-5:00
Moderate
5:00-5:30
Moderate
5:30-6:00
Moderate
6:00-6:30
Moderate
6:30-7:00
Moderate
7:00-7:30
Moderate
7:30-8:00
Moderate
8:00-8:30
Severe
8:30-9:00
Severe
9:00-9:30
Severe
9:30-10:00
Moderate
10:00-10:30
Moderate
10:30-11:00
Moderate
11:00-11:30
Moderate
11:30-12:00
Moderate
12:00-12:30
Moderate
12:30-13:00
Moderate
13:00-13:30
Moderate
13:30-14:00
Moderate
14:00-14:30
Moderate
14:30-15:00
Moderate
15:00-15:30
Moderate
15:30-16:00
Moderate
16:00-16:30
Moderate
16:30-17:00
Moderate
17:00-17:30
Moderate
17:30-18:00
Moderate
18:00-18:30
Moderate
18:30-19:00
Moderate
19:00-19:30
Moderate
19:30-20:00
Moderate
20:00-20:30
Moderate
20:30-21:00
Light
21:00-21:30
Moderate
21:30-22:00
Moderate
22:00-22:30
Moderate
22:30-23:00
Moderate
23:00-23:30
Light
23:30-24:00
Moderate
24:00-24:30
Moderate
24:30-25:00
Moderate
25:00-25:30
Moderate
25:30-25:59
Moderate
25:59-26:28
Moderate
26:28-26:57
Moderate
26:57-27:26
Moderate
27:26-27:55
Moderate
27:55-28:24
Moderate
28:24-28:53
Moderate
28:53-29:22
Moderate
29:22-29:51
Moderate
29:51-30:20
Moderate
30:20-30:49
Moderate
30:49-31:18
Moderate
31:18-31:47
Moderate
31:47-32:16
Moderate
32:16-32:45
Moderate
32:45-33:14
Moderate
33:14-33:43
Moderate
33:43-34:12
Moderate
34:12-34:41
Moderate
Landing
Moderate
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
PVG Shanghai Pudong International Airport - Departure
Wind
12 kt (340°)
Sky
Broken
Temperature
24°C
Conditions
VFR - Clear conditions, no delays expected
SEA Seattle–Tacoma International Airport - Arrival
Wind
6 kt (360°)
Sky
Broken
Temperature
19°C
Conditions
VFR - Clear conditions, no delays expected
Your flight details
Departure timing and aircraft information
Morning Flight Departure
Time of day
Morning Flight
Tip
Morning flights typically experience smoother conditions as the atmosphere is more stable and thermal turbulence hasn't yet developed.
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.

Fly this route, calmly Game · Beta A calming mini-game, not a forecast. Glide PVG → SEA through soft clouds, nothing to crash into.