CZ637 ChangchunCGQ SeoulICN · 18:20
CZ637 by China Southern Airlines flies from Changchun (CGQ) to Seoul (ICN) for the Tue, Sep 8 departure.
arrival expected at ICN · on schedule
board checked 14m ago · checking again in 45s
Where the minutes go
last 7 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The last 30 days
arrival outcome per operationmedian arrival −21 min · 0 cancelled · 15 operations tracked
The route today
live boardsWhen it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
How CZ637 actually runs
Pro Flight Search has tracked every published board update for CZ637 across the CGQ and ICN boards: schedule changes, gate pushes and actual clocks. Usually lands ~21 min early. Based on 13 confirmed landings · 13/13 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how CZ637 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationBoard clocks recorded as CGQ and ICN published them.
Planning around CZ637? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — CZ637 Changchun to Seoul on-time performance, measured from the CGQ and ICN airport boards.
https://proflightsearch.com/flight/CZ637
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