China Southern AirlinesCZ100% on time
Flights CZ303 13:40 daily
live
Direct flights from Guangzhou (CAN) to London (LHR): 7 nonstop departures observed each week across 1 airline. 100% of the last 7 operated flights arrived within 15 minutes of schedule. The median arrival is 13 minutes early. No cancellations were recorded across the 7 tracked flights. The nonstop covers 9,495 km, an estimated 12 hours 40 minutes in the air. Measured by Pro Flight Search from live flight boards at Guangzhou and London. Updated 11 September 2026 at 02:17 UTC.
CAN
Guangzhou
smooth · +11
LHR
London
busy · +15
9,495 km · ~12h 40m est.
Runs reliable · 1 airline · 7x weekly · nonstop
100% on time
of the last 7 operated CAN → LHR flights arrived within 15 minutes
Median arrival delay is −13 min. 0 of 7 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival−13 minacross the last 7 operated legs
Flight time~12h 40mestimated from route distance
Weekly departures7x1 direct airline on the leg
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
China Southern Airlines
Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.
Who flies it
observed on the boards · 7 daysHistory
operated legs · board outcomesActual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsWeather lens
Current conditions put the pressure at CAN and LHR: 29% odds of a 15+ minute delay and around +-3 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →
next sweep in 120s
How the Guangzhou to London route actually runs
Pro Flight Search records official board updates for nonstop CAN to LHR flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.
Planning around a delay? Live airport delays · Weather delay risk map · 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 — Guangzhou (CAN) to London (LHR) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/CAN-LHR
CAN to LHR questions
Is CAN–LHR running on time right now?
Smooth skies ahead. The arrival side at LHR is the weaker end, route health score 82/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from CAN to LHR?
Great-circle distance is 9,495 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 700–844 min gate-to-gate on this route.
How often does CAN–LHR fly?
China Southern Airlines runs the route with about 7 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.
What does the route health score measure?
A blend of departure-side delay at CAN and arrival-side delay at LHR, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.
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