DEN
Denver International Airport
✈
LHR
London Heathrow Airport
Distance
4,048 nm
Altitude
39,000 ft
Est. Duration
9h 20m
Route Information
Departure

DEN (DEN)

Distance

7,496.5 km (4,047.8 nautical miles)

Arrival

LHR (LHR)

Flight Time

540 minutes (9h 0m)

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
Your flight, stretch by stretch
Some bumps expected. 2 bumpier stretches, about 480 min in total.
  • 0:00-6:00 · Takeoff · light bumps (~360 min) Light movement. Drinks may ripple.
  • 6:00-7:00 · smooth
  • 7:00-9:00 · Landing · light bumps (~120 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 DEN → LHR
15 pilot reports along this route
15 / 15
Reporting smooth
0 / 15
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP UPS222 5917N04853W 1137 F340 5900N05000W 1142 CUDDY MS45 323/74 KT N580UP QXT IGW 251137 F67A
1h ago
Smooth
ARP AIC81P 6053N04415W 1134 F360 5900N05000W 1200 DORYY MS44 296/28 KT VTAEP QXS UAK 251134 F59A
1h ago
Smooth
ARP TOM242 5551N01904W 1132 F360 5601N02000W 1137 5701N03000W MS50 271/114 KT GTUIJ DDL XXF 251132 L20A
1h ago
Smooth
ARP BAW17R 5957N03100W 1131 F370 5901N04001W 1208 5701N05001W MS44 247/49 KT GRAES DDL XXF 251131 F68A
1h ago
Smooth
ARP VIR135G 5552N01902W 1131 F350 5602N01959W 1136 5702N03000W MS49 272/109 KT GVPRD DDL XXF 251131 J46A
1h ago
AI-powered flight briefing
14,500 data points analyzed · HIGH confidence
Your Flight

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

Your Journey Beta

Your route takes you over the Rocky Mountains and crossing the North Atlantic 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 smooth with possible light bumps, with calm conditions around the airport.

Winds Aloft

Winds at cruising altitude are about 73 knots. These winds are favorable and may get you there up to 66 minutes early.

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 00min
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
5:00-5:30
Light
5:30-6:00
Light
6:00-6:30
Smooth
6:30-7:00
Smooth
7:00-7:30
Light
7:30-8:00
Light
8:00-8:30
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
DEN Denver International Airport - Departure
Wind
6 kt (160°)
Sky
Scattered
Temperature
6°C
Conditions
VFR - Clear conditions, no delays expected
LHR London Heathrow Airport - Arrival
Wind
26 kt G43 (270°)
Sky
Unknown
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 DEN → LHR, with soft clouds where today's forecast shows bumpier air. Nothing to crash into.