LHR
London Heathrow Airport
✈
ORD
Chicago O'Hare International Airport
Distance
3,425 nm
Altitude
40,000 ft
Est. Duration
7h 57m
Route Information
Departure

LHR (LHR)

Distance

6,343.8 km (3,425.4 nautical miles)

Arrival

ORD (ORD)

Flight Time

520 minutes (8h 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. 8 bumpier stretches, about 404 min in total.
  • 0:00-0:59 · Takeoff · moderate bumps (~59 min) Noticeable bumps. The seatbelt sign is likely on.
  • 0:59-1:57 · light bumps (~58 min) Light movement. Drinks may ripple.
  • 1:57-2:26 · moderate bumps (~29 min) Noticeable bumps. The seatbelt sign is likely on.
  • 2:26-2:55 · smooth
  • 2:55-3:53 · light bumps (~58 min) Light movement. Drinks may ripple.
  • 3:53-4:22 · smooth
  • 4:22-4:51 · light bumps (~29 min) Light movement. Drinks may ripple.
  • 4:51-5:20 · smooth
  • 5:20-5:49 · light bumps (~29 min) Light movement. Drinks may ripple.
  • 5:49-6:18 · smooth
  • 6:18-7:42 · light bumps (~84 min) Light movement. Drinks may ripple.
  • 7:42-8:40 · Landing · moderate bumps (~58 min) Noticeable bumps. The seatbelt sign is likely on.
💙
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 → ORD
15 pilot reports along this route
15 / 15
Reporting smooth
0 / 15
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP WJA53 5411N01148W 0948 F360 VENER 1006 5500N02000W MS49 231/131 KT CGDDR QXS BLY 150948 F20A
4m ago
Smooth
ARP TSC251 5433N01348W 0948 F400 RESNO 0955 5530N02000W MS48 229/92 KT CGUBA QXS ORK 150948 J18A
4m ago
Smooth
ARP BAW17R 5451N02458W 0948 F360 5430N03000W 1011 5300N04000W MS43 270/44 KT GVIIL DDL XXF 150948 F41A
4m ago
Smooth
ARP UAL311 5721N02508W 0948 F360 5700N03000W 1011 5530N04000W MS44 276/44 KT N67134 DDL IG1 150949 F10A
4m ago
Smooth
ARP CLX19F 5504N02145W 0946 F410 5500N02000W 0953 RESNO MS44 244/45 KT LXLCL QXT AOE 150947 F51A
6m ago
AI-powered flight briefing
12,500 data points analyzed · HIGH confidence
Your Flight

We analysed more than 12,500 data points along your route from London Heathrow Airport, London to Chicago O'Hare International Airport, Chicago.

Your Journey Beta

28 minutes, 1 hour, and 2 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 crossing the North Atlantic Ocean – conditions there 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 75 knots. These winds may delay arrival by up to 60 minutes.

Landing

Landing should feel a bit bumpy on descent 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 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
Moderate
2:26-2:55
Smooth
2:55-3:24
Light
3:24-3:53
Light
3:53-4:22
Smooth
4:22-4:51
Light
4:51-5:20
Smooth
5:20-5:49
Light
5:49-6:18
Smooth
6:18-6:46
Light
6:46-7:14
Light
7:14-7:42
Light
7:42-8:10
Moderate
Landing
Moderate
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 (190°)
Sky
Few
Temperature
19°C
Conditions
MVFR - Reduced visibility, minor delays possible
ORD Chicago O'Hare International Airport - Arrival
Wind
10 kt (70°)
Sky
Overcast
Temperature
15°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 → ORD, with soft clouds where today's forecast shows bumpier air. Nothing to crash into.