CX821Cathay Pacific · YYZ → HKG
live · 30m ago
Route confirmed Cathay Pacific

CX821 TorontoYYZ · 10:35 Hong KongHKG · 14:00

CX821 by Cathay Pacific flies from Toronto (YYZ) to Hong Kong (HKG).

Right nowNext departure today Operates daily
10:35

scheduled from YYZ

Typical gate push+17 minmedian posted departure
Typical arrival+4 minmedian over 3 operations
Wins back in air~13 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 4 operations · gate push → arrival
0+30+60+90 min
11-04
+18 gate
10-24
+8 gate · −24 arrival
10-22
+15 gate · +16 arrival
10-21
+18 gate · +4 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
YYZTorontoOn-time likelyYYZ delay board →
HKGHong KongOn-time likelyHKG delay board →
YYZ→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
3.7%Chance of cancellation
+8 minTypical airport delay in this weather

Conditions at YYZ 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 Toronto

Forecast

Thu 5 Nov, local date

High17°Clikely 16°C to 19°C
Low12°Clikely 9°C to 15°C
  • 87% chance of rain

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

Thu 5 Nov, local date

High30°Clikely 29°C to 31°C
Low26°Clikely 24°C to 27°C
  • 73% chance of rain

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.

Other Toronto to Hong Kong flights today

same route · Cathay Pacific
CX829departs 01:35
CX805departs 15:15

If CX821 is cancelled, these are the other Cathay Pacific nonstop flights from Toronto to Hong Kong on the same day, with scheduled departure times in YYZ local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →

How CX821 actually runs

Pro Flight Search has tracked every published board update for CX821 across the YYZ and HKG boards: schedule changes, gate pushes and actual clocks. Usually lands on time. Based on 3 confirmed landings · 2/3 within 15 min of schedule.

The verdict above is that record speaking, so it reflects how CX821 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocksaircraft

Board log

scheduled → actual, per operation
11-04YYZ 10:35 10:53 (+18)HKG
10-24YYZ 10:35 10:43 (+8)HKG 14:00 13:36 (−24)
10-22YYZ 10:35 10:50 (+15)HKG 14:00 14:16 (+16)
10-21YYZ 10:35 10:53 (+18)HKG 14:00 14:04 (+4)

Aircraft

Recent tails: B-LXR, B-LXF, B-LXH.

Board clocks recorded as YYZ and HKG published them.

Planning around CX821? 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: CX821 Toronto to Hong Kong on-time performance, measured from the YYZ and HKG airport boards.

Canonical URL
https://proflightsearch.com/flight/CX821
How we measure this →