United Airlines DEN LHR UA27
United Airlines · Live forecast
DEN → LHR
UA27 · Jul 17, 2026 · 17:35 MD
87
Calm Score
"A smooth ride ahead — sit back and enjoy."
9h 5m
Duration
4,048 nm
Distance
39,000 ft
Cruise Altitude
HIGH
Confidence
Turbulence comfort along route
Comfort score combines turbulence probability with intensity, higher means rougher
Smooth Light Moderate Severe
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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 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 EIN988 5804N03152W 0433 F270 5800N03000W 0440 5700N02000W MS29 293/18 KT EIXLX DDL IG1 170433 J84A
3m ago
Smooth
ARP LDX8 5904N02802W 0432 F430 5900N02000W 0459 ERAKA MS52 311/34 KT OELTF DDL XXH 170432 F29A
4m ago
Smooth
ARP DLH447 5833N06026W 0430 F390 TOXIT 0440 5958N04959W MS39 140/22 KT DAIXB DDL YHO 170430 J72A
6m ago
Smooth
ARP UAL83 5602N01624W 0429 F360 5601N02000W 0444 5601N03000W MS54 352/27 KT N29968 DDL BLY 170429 L06A
7m ago
Smooth
ARP UAL83 5602N01623W 0429 F360 5601N02000W 0444 5601N03000W MS53 353/27 KT N29968 DDL BLY 170429 L05A
7m 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

6 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 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 calm conditions around the airport.

Winds Aloft

Winds at cruising altitude are about 37 knots. These winds are favorable and may get you there up to 14 minutes early.

Landing

Landing should feel smooth 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 05min
Maximum turbulence expected per segment
Takeoff
Smooth
0:30-0:59
Light
0:59-1:28
Light
1:28-1:57
Light
1:57-2:26
Light
2:26-2:55
Light
2:55-3:24
Light
3:24-3:53
Smooth
3:53-4:22
Smooth
4:22-4:51
Light
4:51-5:19
Light
5:19-5:47
Light
5:47-6:15
Moderate
6:15-6:43
Light
6:43-7:11
Light
7:11-7:39
Light
7:39-8:07
Smooth
8:07-8:35
Smooth
Landing
Smooth
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
11 kt G19 (100°)
Sky
Broken
Temperature
24°C
Conditions
VFR — Clear conditions, no delays expected
LHR London Heathrow Airport — Arrival
Wind
5 kt (360°)
Sky
Broken
Temperature
16°C
Conditions
VFR — Clear conditions, no delays expected
Your flight details
Departure timing and aircraft information
Evening Flight Departure
Time of day
Evening Flight
Tip
Evening and night flights typically offer smoother conditions as thermal activity subsides and the atmosphere stabilizes after sunset.
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:

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, not a forecast. Glide DEN → LHR through soft clouds, nothing to crash into.