CX811Cathay Pacific · BOS → HKG
live · 58m ago
Route confirmed Cathay Pacific

CX811 BostonBOS · 00:30 Hong KongHKG · 05:00

CX811 by Cathay Pacific flies from Boston (BOS) to Hong Kong (HKG) for the Mon, Nov 9 departure.

Right nowOn Time · gate E12 · as of 19:08
00:30

departs BOS · on schedule

Typical arrival−23 minmedian over 3 operations
Wins back in air~45 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 3 operations · gate push → arrival
0+30+60+90 min
11-08
+22 gate · +5 arrival
11-07
−23 arrival
11-06
−55 arrival

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The route today

live boards
BOSBostonOn-time likelyBOS delay board →
HKGHong KongOn-time likelyHKG delay board →
BOS→HKGevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
36%Chance of 15+ min delay
2.2%Chance of cancellation
+4 minTypical airport delay in this weather

Conditions at BOS and HKG are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. These figures come from both airports' records under conditions like today's, over the last 90 days.

Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →

Tomorrow at Boston

Forecast

Mon 9 Nov, local date

High15°Clikely 14°C to 16°C
Low8°Clikely 6°C to 9°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Tomorrow at Hong Kong

Forecast

Tue 10 Nov, local date

High23°Clikely 22°C to 25°C
Low17°Clikely 15°C to 19°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

How CX811 actually runs

Pro Flight Search has tracked every published board update for CX811 across the BOS and HKG boards: schedule changes, gate pushes and actual clocks. Early read: no clear pattern yet. Only 3 completed legs so far: left noticeably late (~22 min) but landed about 23 min early. Not enough to call it.

The verdict above is that record speaking, so it reflects how CX811 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocks

Board log

scheduled → actual, per operation
11-08BOS 00:30 00:52 (+22)HKG 05:00 05:05 (+5)
11-07BOS 00:30HKG 05:00 04:37 (−23)
11-06BOS 00:30HKG 05:00 04:05 (−55)

Board clocks recorded as BOS and HKG published them.

Planning around CX811? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: CX811 Boston to Hong Kong on-time performance, measured from the BOS and HKG airport boards.

Canonical URL
https://proflightsearch.com/flight/CX811
How we measure this →