CZ303China Southern Airlines · CAN → LHR
live · 4m ago
Route confirmed China Southern Airlines

CZ303 GuangzhouCAN · 13:50 LondonLHR · 19:20

CZ303 by China Southern Airlines flies from Guangzhou (CAN) to London (LHR).

Right nowDescending into London
19:09

estimated arrival at LHR · local time · ~27 min from now

LivePosition · updated 4m ago
LHR127 mi · ~27 min leftCAN
30,300 ftAltitudedescending
403 mphSpeed350 kt
258°Direction

Live position · flown path, last 3h 52m

Typical gate push+20 minmedian posted departure
Typical arrival−12 minmedian over 3 operations
Wins back in air~32 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
10-24
+17 gate · −11 arrival
10-23
+20 gate · −25 arrival
10-22
+21 gate · −12 arrival
10-21
+17 gate

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
CANGuangzhouOn-time likelyCAN delay board →
LHRLondonOn-time likelyLHR delay board →
CAN→LHRevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
26%Chance of 15+ min delay
2.5%Chance of cancellation
-3 minAvg hub delay right now

Driven mainly by LHR (London), currently flying IFR (instrument). For this route and airline, 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 →

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 CZ303 actually runs

Pro Flight Search has tracked every published board update for CZ303 across the CAN and LHR boards: schedule changes, gate pushes and actual clocks. Usually lands ~12 min early. Based on 2 confirmed landings · 2/2 within 15 min of schedule. Pushes back late but makes up time in the air.

The verdict above is that record speaking, so it reflects how CZ303 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
10-24CAN 13:40 13:57 (+17)LHR 19:20 19:09 (−11)
10-23CAN 13:40 14:00 (+20)LHR 19:20 18:55 (−25)
10-22CAN 13:40 14:01 (+21)LHR 19:20 19:08 (−12)
10-21CAN 13:40 13:57 (+17)LHR

Board clocks recorded as CAN and LHR published them.

Planning around CZ303? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

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Suggested citation

Pro Flight Search — CZ303 Guangzhou to London on-time performance, measured from the CAN and LHR airport boards.

Canonical URL
https://proflightsearch.com/flight/CZ303
How we measure this →