Your Flight
We analysed more than 15,000 data points along your route from London Heathrow Airport, London to Seattle–Tacoma International Airport, Seattle.
Virgin Atlantic
LHR
SEA
VS105
Virgin Atlantic · Live forecast
LHR
→
SEA
82
Calm Score
"A smooth ride ahead — sit back and enjoy."
10h 20m
Duration
4,159 nm
Distance
40,000 ft
Cruise Altitude
HIGH
Confidence
Turbulence comfort along route
Comfort score combines turbulence probability with intensity, higher means rougher
Smooth
Light
Moderate
Severe
Notifications not available
Your flight departs in less than 6 hours. The forecast is unlikely to change significantly at this point.
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 → SEA
14 pilot reports along this route
14 / 14
Reporting smooth
0 / 14
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP ACA937 5706N01023W 0912 F360 5900N02000W 1002 6000N03000W MS52 263/100 KT CFSKZ DDL IG1 270912 F23A
8m ago
Smooth
ARP UAL37 5643N00830W 0909 F360 GOMUP 0918 5900N02000W MS53 271/104 KT N14102 DDL SYY 270909 F86A
11m ago
Smooth
ARP UAL37 5642N00827W 0909 F360 GOMUP 0918 5900N02000W MS53 272/103 KT N14102 DDL SYY 270909 F85A
11m ago
Smooth
ARP DAL35 5819N01330W 0907 F310 5930N02000W 0939 5930N03000W MS45 265/84 KT N16065 QXS BRR 270907 F34A
13m ago
Smooth
ARP ICE49C 5906N00835W 0906 F380 ATSIX 0915 6100N01234W MS45 275/58 KT TFICJ QXS SYY 270906 F77A
14m ago
AI-powered flight briefing
15,000 data points analyzed
· HIGH confidence
Your Journey Beta
Your route takes you over the Scottish Highlands, crossing the North Atlantic Ocean, and over the Rocky Mountains – 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 41 knots. These winds may delay arrival by up to 31 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
Flight Timeline 10h 20min
Maximum turbulence expected per segment
Takeoff
Light
0:30-1:00
Light
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
Light
4:30-5:00
Light
5:00-5:29
Light
5:29-5:58
Light
5:58-6:27
Light
6:27-6:56
Light
6:56-7:25
Light
7:25-7:54
Smooth
7:54-8:23
Light
8:23-8:52
Light
8:52-9:21
Light
9:21-9:50
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
10 kt (280°)
Sky
Scattered
Temperature
20°C
Conditions
VFR — Clear conditions, no delays expected
SEA
Seattle–Tacoma International Airport — Arrival
Wind
8 kt (220°)
Sky
Broken
Temperature
15°C
Conditions
MVFR — Reduced visibility, minor delays possible
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:
- ECMWF Open Data — Global atmospheric model (wind/temperature at 13 flight levels)
- NOAA Aviation Weather Center — Pilot Reports (PIREPs), SIGMETs/AIRMETs, TAFs
- NOAA Space Weather Prediction Center — Aurora forecasts for polar routes
- AviationStack API — Flight schedules and airline operational data
Disclaimer: This forecast is for informational purposes only. Always consult official aviation weather sources and follow ATC guidance.