LHR
London Heathrow Airport
✈
DEN
Denver International Airport
Distance
4,048 nm
Altitude
40,000 ft
Est. Duration
9h 20m
Route Information
Departure

LHR (LHR)

Distance

7,496.5 km (4,047.8 nautical miles)

Arrival

DEN (DEN)

Flight Time

580 minutes (9h 40m)

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. 4 bumpier stretches, about 406 min in total.
  • 0:00-0:59 · Takeoff · moderate bumps (~59 min) Noticeable bumps. The seatbelt sign is likely on.
  • 0:59-2:55 · light bumps (~116 min) Light movement. Drinks may ripple.
  • 2:55-4:22 · smooth
  • 4:22-5:20 · light bumps (~58 min) Light movement. Drinks may ripple.
  • 5:20-6:47 · smooth
  • 6:47-9:40 · Landing · light bumps (~173 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 → DEN
15 pilot reports along this route
14 / 15
Reporting smooth
1 / 15
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP BAW293 5447N01359W 1925 F360 RESNO 1930 5601N02000W MS51 322/121 KT GZBLC DDL BLY 301925 L69A
5m ago
Smooth
ARP BAW189 5657N02534W 1925 F360 5730N03000W 1943 5730N04000W MS43 340/47 KT GZBLH DDL XXF 301925 L16A
5m ago
Smooth
ARP THY1GJ 6022N04132W 1925 F360 5902N05001W 2001 5730N05802W MS47 257/27 KT TCLJF DDL UAK 301925 F43A
5m ago
Smooth
ARP DAL4 5846N02413W 1924 F320 5931N03000W 1948 5931N04000W MS43 210/55 KT N827MH QXT AOE 301924 F42A
6m ago
Smooth
ARP BAW293 5438N01317W 1922 F360 RESNO 1930 5601N02000W MS51 321/125 KT GZBLC DDL BLY 301922 L68A
8m ago
AI-powered flight briefing
14,500 data points analyzed · VERY HIGH confidence
Your Flight

We analysed more than 14,500 data points along your route from London Heathrow Airport, London to Denver International Airport, Denver.

Your Journey Beta

42 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 55 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 9h 40min
Maximum turbulence expected per segment
Takeoff
Moderate
0:30-0:59
Moderate
0:59-1:28
Light
1:28-1:57
Light
1:57-2:26
Light
2:26-2:55
Light
2:55-3:24
Smooth
3:24-3:53
Smooth
3:53-4:22
Smooth
4:22-4:51
Light
4:51-5:20
Light
5:20-5:49
Smooth
5:49-6:18
Smooth
6:18-6:47
Smooth
6:47-7:16
Light
7:16-7:45
Light
7:45-8:14
Light
8:14-8:42
Light
8:42-9:10
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
5 kt (100°)
Sky
Few
Temperature
12°C
Conditions
VFR - Clear conditions, no delays expected
DEN Denver International Airport - Arrival
Wind
6 kt (30°)
Sky
Few
Temperature
13°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 → DEN, with soft clouds where today's forecast shows bumpier air. Nothing to crash into.