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 463 min in total.
  • 0:00-0:30 · Takeoff · moderate bumps (~30 min) Noticeable bumps. The seatbelt sign is likely on.
  • 0:30-0:59 · light bumps (~29 min) Light movement. Drinks may ripple.
  • 0:59-1:28 · moderate bumps (~29 min) Noticeable bumps. The seatbelt sign is likely on.
  • 1:28-3:24 · light bumps (~116 min) Light movement. Drinks may ripple.
  • 3:24-3:53 · smooth
  • 3:53-5:20 · light bumps (~87 min) Light movement. Drinks may ripple.
  • 5:20-5:49 · moderate bumps (~29 min) Noticeable bumps. The seatbelt sign is likely on.
  • 5:49-6:46 · light bumps (~57 min) Light movement. Drinks may ripple.
  • 6:46-7:14 · smooth
  • 7:14-8:40 · Landing · light bumps (~86 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 → ORD
15 pilot reports along this route
15 / 15
Reporting smooth
0 / 15
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP QTR67P 5440N01003W 1836 F320 PIKIL 1858 5800N02000W MS43 195/90 KT A7BTC QXS BLY 301836 F09A
1m ago
Smooth
ARP AFR174 5636N03409W 1836 F360 5630N04000W 1901 5500N05000W MS46 269/37 KT FHTYE QXT EUA 301836 J50A
1m ago
Smooth
ARP EIN107 5705N02619W 1835 F350 5732N03000W 1851 5732N04001W MS44 214/40 KT EIFNH DDL XXN 301835 J37A
2m ago
Smooth
ARP FBU80G 5558N01145W 1834 F360 AGORI 1842 5831N01457W MS51 195/119 KT FHREU QXS BLY 301834 J21A
3m ago
Smooth
ARP DLH8P 5605N02621W 1834 F390 5631N03000W 1850 5631N04000W MS44 218/39 KT DAIXO DDL XXF 301834 J35A
3m 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

1 hour, 1 hour 15 minutes, and 5 hours 45 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 – 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 64 knots. These winds may delay arrival by up to 40 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 8h 40min
Maximum turbulence expected per segment
Takeoff
Moderate
0:30-0:59
Light
0:59-1:28
Moderate
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
Light
4:22-4:51
Light
4:51-5:20
Light
5:20-5:49
Moderate
5:49-6:18
Light
6:18-6:46
Light
6:46-7:14
Smooth
7:14-7:42
Light
7:42-8:10
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
ORD Chicago O'Hare International Airport - Arrival
Wind
9 kt (70°)
Sky
Overcast
Temperature
14°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.