SEA
Seattle–Tacoma International Airport
✈
KOA
Ellison Onizuka Kona International Airport at Keahole
Distance
2,336 nm
Altitude
40,000 ft
Est. Duration
5h 32m
Route Information
Departure

SEA (SEA)

Distance

4,326.6 km (2,336.2 nautical miles)

Arrival

KOA (KOA)

Estimated Flight Time

332 minutes (5h 32m)

Flight Profile

Cruise Altitude: 40,000 ft (Flight Level 400)

Route calculated using great circle navigation

Turbulence comfort along route
Comfort score combines turbulence probability with intensity, higher means rougher
Smooth Light Moderate Severe
Your flight, stretch by stretch
Some bumps expected. 7 bumpier stretches, about 332 min in total.
  • 0:00-1:53 · Takeoff · light bumps (~113 min) Light movement. Drinks may ripple.
  • 1:53-2:20 · moderate bumps (~27 min) Noticeable bumps. The seatbelt sign is likely on.
  • 2:20-3:14 · light bumps (~54 min) Light movement. Drinks may ripple.
  • 3:14-3:41 · moderate bumps (~27 min) Noticeable bumps. The seatbelt sign is likely on.
  • 3:41-4:08 · light bumps (~27 min) Light movement. Drinks may ripple.
  • 4:08-5:02 · moderate bumps (~54 min) Noticeable bumps. The seatbelt sign is likely on.
  • 5:02-5:32 · Landing · light bumps (~30 min) Light movement. Drinks may ripple.
💙
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.
Right now on your route
Live pilot reports from aircraft flying SEA → KOA
2 pilot reports along this route
2 / 2
Reporting smooth
0 / 2
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
SEA UA /OV SEA150040/TM 1325/FL170/TP B738/TA M21/IC LGT RIME 170-190/RM ZSE
15m ago
Smooth
ARP WJA1863 4406N 12959W 1317 F350 MS49 298/035KT
23m ago
AI-powered flight briefing
8,500 data points analyzed · HIGH confidence
Your Flight

We analysed more than 8,500 data points along your route from Seattle–Tacoma International Airport, Seattle to Ellison Onizuka Kona International Airport at Keahole, Kailua-Kona.

Your Journey Beta

3 hours 35 minutes, 4 hours 25 minutes, and 5 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 Pacific 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 61 knots. These winds may delay arrival by up to 35 minutes.

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
Live data from ECMWF global forecast models · 12 atmospheric pressure levels · Updated every 6 hours
Flight Timeline 5h 32min
Maximum turbulence expected per segment
Takeoff
Light
0:30-0:58
Light
0:58-1:26
Light
1:26-1:53
Light
1:53-2:20
Moderate
2:20-2:47
Light
2:47-3:14
Light
3:14-3:41
Moderate
3:41-4:08
Light
4:08-4:35
Moderate
4:35-5:02
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
SEA Seattle–Tacoma International Airport - Departure
Visibility
5 mi
Wind
6 kt (40°)
Sky
Overcast
Temperature
9°C
Conditions
MVFR - Reduced visibility, minor delays possible
KOA Ellison Onizuka Kona International Airport at Keahole - Arrival
Wind
6 kt (10°)
Sky
Overcast
Temperature
26°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. Glide SEA → KOA, with soft clouds where today's forecast shows bumpier air. Nothing to crash into.