United Airlines DEN LHR UA27
United Airlines · Live forecast
DEN → LHR
UA27 · Mar 16, 2026 · 18:35 MD
81
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
Set an alert before your flight Beta
You still have 19 hours before departure. We'll notify you if this forecast changes.
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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
7 pilot reports along this route
7 / 7
Reporting smooth
0 / 7
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP UAF1241 5602N01746W 0457 F330 PIKIL 0507 SOVED MS55 252/116 KT 00406A DDL XXF 160457 F61A
4m ago
Smooth
ARP LOT6506 5900N 03351W 0453 F380 M46 333/35 6000N 03000W 0509 6200N 02000W KT SPLSB DDL XXH 160453 L21A
8m ago
Smooth
ARP DAL56 6037N04447W 0452 F370 6100N04000W 0510 6030N03000W MS47 191/12 KT N827NW QXS UAK 160452 J22A
9m ago
Smooth
ARP UPS208 5921N04902W 0445 F320 5900N05000W 0450 HOIST MS53 247/28 KT N355UP QXS UAK 160445 F42A
16m ago
Smooth
ARP KLM616 5701N 01836W 0443 F370 M55 272/71 SUNOT 0455 KESIX KT PHBKG QXT AME 160443 L57A
18m 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

8 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 a bit bumpy initially, with calm conditions around the airport.

Winds Aloft

Winds at cruising altitude are about 58 knots. These winds are favorable and may get you there up to 39 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 05min
Maximum turbulence expected per segment
Takeoff
Moderate
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
Light
3:53-4:22
Light
4:22-4:51
Light
4:51-5:19
Smooth
5:19-5:47
Light
5:47-6:15
Smooth
6:15-6:43
Light
6:43-7:11
Light
7:11-7:39
Light
7:39-8:07
Moderate
8:07-8:35
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
Visibility
5 mi
Wind
7 kt (130°)
Sky
Broken
Temperature
-9°C
Conditions
MVFR — Reduced visibility, minor delays possible
LHR London Heathrow Airport — Arrival
Wind
10 kt (270°)
Sky
Few
Temperature
5°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
Tomorrow — conditions may change
b772
Category
Wide-Body Aircraft
Size
Large
Comfort
Large, twin-aisle aircraft like this generally provide the smoothest ride through turbulence due to their size, weight, and advanced stabilization systems.
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.