SIN
Singapore Changi Airport
✈
SEA
Seattle–Tacoma International Airport
Distance
7,008 nm
Altitude
39,000 ft
Est. Duration
15h 55m
Route Information
Departure

SIN (SIN)

Distance

12,979.1 km (7,008.2 nautical miles)

Arrival

SEA (SEA)

Flight Time

2325 minutes (14h 45m)

Flight Profile

Cruise Altitude: 39,000 ft (Flight Level 390)

Route calculated using great circle navigation

Turbulence comfort along route
Comfort score combines turbulence probability with intensity, higher means rougher
Smooth Light Moderate Severe
💙
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
25,000 data points analyzed · HIGH confidence
Your Flight

We analysed more than 25,000 data points along your route from Singapore Changi Airport, Singapore to Seattle–Tacoma International Airport, Seattle.

Your Journey Beta

13 hours 15 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 crossing the North Pacific Ocean and crossing the North Pacific Ocean – these areas can sometimes cause light turbulence.

Smooth Flight

We're expecting smooth conditions throughout your flight. You can sit back and relax.

Takeoff

Takeoff should feel a bit bumpy initially, with calm conditions around the airport.

Winds Aloft

Winds at cruising altitude are about 43 knots. These winds are favorable and may get you there up to 17 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 38h 45min
Maximum turbulence expected per segment
Takeoff
Moderate
0:30-1:00
Light
1:00-1:30
Smooth
1:30-2:00
Smooth
2:00-2:30
Smooth
2:30-3:00
Smooth
3:00-3:30
Light
3:30-4:00
Smooth
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
Smooth
7:30-8:00
Light
8:00-8:30
Smooth
8:30-9:00
Light
9:00-9:30
Light
9:30-10:00
Light
10:00-10:30
Smooth
10:30-11:00
Smooth
11:00-11:30
Light
11:30-12:00
Smooth
12:00-12:30
Light
12:30-13:00
Light
13:00-13:30
Moderate
13:30-14:00
Light
14:00-14:30
Light
14:30-15:00
Smooth
15:00-15:30
Smooth
15:30-16:00
Smooth
16:00-16:30
Light
16:30-17:00
Moderate
17:00-17:30
Light
17:30-18:00
Light
18:00-18:30
Light
18:30-19:00
Light
19:00-19:30
Moderate
19:30-20:00
Light
20:00-20:30
Light
20:30-21:00
Light
21:00-21:30
Light
21:30-22:00
Smooth
22:00-22:30
Light
22:30-23:00
Moderate
23:00-23:30
Light
23:30-24:00
Light
24:00-24:30
Moderate
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
Light
29:00-29:30
Light
29:30-30:00
Light
30:00-30:30
Light
30:30-31:00
Light
31:00-31:29
Smooth
31:29-31:58
Smooth
31:58-32:27
Smooth
32:27-32:56
Smooth
32:56-33:25
Light
33:25-33:54
Light
33:54-34:23
Light
34:23-34:52
Light
34:52-35:21
Light
35:21-35:50
Smooth
35:50-36:19
Smooth
36:19-36:48
Light
36:48-37:17
Light
37:17-37:46
Light
37:46-38:15
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
SIN Singapore Changi Airport - Departure
Wind
8 kt (120°)
Sky
Scattered
Temperature
32°C
Conditions
VFR - Clear conditions, no delays expected
SEA Seattle–Tacoma International Airport - Arrival
Wind
5 kt (210°)
Sky
Clear
Temperature
20°C
Conditions
VFR - Clear conditions, no delays expected
Your flight details
Departure timing and aircraft information
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 SIN → SEA through soft clouds, nothing to crash into.