British Airways LHR BOS BA239
British Airways · Live forecast
LHR → BOS
BA239 · Jun 1, 2026 · 20:10 BS · boeing 777-236(er)
85
Calm Score
"A smooth ride ahead — sit back and enjoy."
7h 25m
Duration
2,830 nm
Distance
40,000 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 LHR → BOS
10 pilot reports along this route
10 / 10
Reporting smooth
0 / 10
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP ASL501 5310N02852W 2215 F350 5400N02000W 2250 DOGAL MS46 259/101 KT YUARB QXT AME 012215 J80A
15m ago
Smooth
ARP UAE9936 5248N02856W 2211 F330 5459N02000W 2248 5529N01500W MS44 256/97 KT A6EFW DDL XXH 012211 F87A
19m ago
Smooth
ARP TAR203 4925N05437W 2206 F390 5000N05000W 2229 5000N04000W MS43 244/16 KT ECOOI QXS YQX 012206 J94A
24m ago
Smooth
ARP RCH425 5407N02908W 2203 F350 5500N02000W 2239 PIKIL MS48 255/79 KT 33113A DDL XXN 012203 F02A
27m ago
Smooth
ARP RCH425 5358N03015W 2158 F350 5400N03000W 2159 5500N02000W MS49 256/73 KT 33113A DDL XXN 012158 F93A
32m ago
AI-powered flight briefing
10,000 data points analyzed · HIGH confidence
Your Flight

We analysed more than 10,000 data points along your route from London Heathrow Airport, London to Logan International, Boston.

Your Journey Beta

A brief bumpy patch may occur during cruise. It's nothing to worry about - just keep your seatbelt fastened.

Your route takes you crossing the North Atlantic Ocean and over the Appalachian Mountains – 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 39 knots. These winds may delay arrival by up to 29 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 7h 25min
Maximum turbulence expected per segment
Takeoff
Moderate
0:30-1:00
Light
1:00-1:30
Light
1:30-2:00
Light
2:00-2:30
Smooth
2:30-3:00
Smooth
3:00-3:30
Smooth
3:30-4:00
Light
4:00-4:30
Light
4:30-4:59
Light
4:59-5:28
Light
5:28-5:57
Smooth
5:57-6:26
Smooth
6:26-6:55
Smooth
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
9 kt (190°)
Sky
Broken
Temperature
16°C
Conditions
IFR — Low visibility, delays likely
BOS Logan International — Arrival
Wind
4 kt (100°)
Sky
Clear
Temperature
13°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
boeing 777-236(er)
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.