LHR
London Heathrow Airport
✈
YYC
Calgary International Airport
Distance
3,787 nm
Altitude
40,000 ft
Est. Duration
8h 45m
Route Information
Departure

LHR (LHR)

Distance

7,014.1 km (3,787.3 nautical miles)

Arrival

YYC (YYC)

Estimated Flight Time

525 minutes (8h 45m)

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. 5 bumpier stretches, about 496 min in total.
  • 0:00-0:30 · Takeoff · moderate bumps (~30 min) Noticeable bumps. The seatbelt sign is likely on.
  • 0:30-2:56 · light bumps (~146 min) Light movement. Drinks may ripple.
  • 2:56-3:25 · smooth
  • 3:25-5:21 · light bumps (~116 min) Light movement. Drinks may ripple.
  • 5:21-5:50 · moderate bumps (~29 min) Noticeable bumps. The seatbelt sign is likely on.
  • 5:50-8:45 · Landing · light bumps (~175 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 LHR → YYC
15 pilot reports along this route
15 / 15
Reporting smooth
0 / 15
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP DAL71 5609N01109W 0903 F360 SUNOT 0921 5732N02000W MS46 229/111 KT N571DZ DDL SYY 150903 J32A
9m ago
Smooth
ARP LOT4 6055N02101W 0902 F410 6059N02000W 0905 6159N01000W MS46 257/30 KT SPLRF DDL KEF 150902 L31A
10m ago
Smooth
ARP DAL133 5713N01052W 0900 F360 5900N02000W 0942 5930N03000W MS45 226/106 KT N513DZ DDL TRE 150901 J11A
12m ago
Smooth
ARP UAL945 5628N00804W 0857 F320 GOMUP 0907 6001N01959W MS43 354/144 KT N12005 DDL TRE 150857 L33A
15m ago
Smooth
ARP UAL945 5627N00800W 0857 F320 GOMUP 0907 6001N01959W MS43 354/143 KT N12005 DDL TRE 150857 L32A
15m ago
AI-powered flight briefing
13,500 data points analyzed · HIGH confidence
Your Flight

We analysed more than 13,500 data points along your route from London Heathrow Airport, London to Calgary International Airport, Calgary.

Your Journey Beta

26 minutes and 5 hours 25 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 Atlantic Ocean and over the Rocky Mountains – 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 51 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
Live data from ECMWF global forecast models · 12 atmospheric pressure levels · Updated every 6 hours
Flight Timeline 8h 45min
Maximum turbulence expected per segment
Takeoff
Moderate
0:30-1:00
Light
1:00-1:29
Light
1:29-1:58
Light
1:58-2:27
Light
2:27-2:56
Light
2:56-3:25
Smooth
3:25-3:54
Light
3:54-4:23
Light
4:23-4:52
Light
4:52-5:21
Light
5:21-5:50
Moderate
5:50-6:19
Light
6:19-6:48
Light
6:48-7:17
Light
7:17-7:46
Light
7:46-8:15
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
LHR London Heathrow Airport - Departure
Wind
8 kt G18 (190°)
Sky
Few
Temperature
17°C
Conditions
MVFR - Reduced visibility, minor delays possible
YYC Calgary International Airport - Arrival
Visibility
10+ mi
Wind
8 kt (290°)
Sky
Clear
Temperature
3°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 LHR → YYC, with soft clouds where today's forecast shows bumpier air. Nothing to crash into.