UA1679 San FranciscoSFO · 08:51 CancúnCUN · 16:12
UA1679 by United Airlines flies from San Francisco (SFO) to Cancún (CUN) for the Mon, Sep 7 departure.
arrived at CUN · 10 min late
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at SFO and CUN are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. 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 departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
How UA1679 actually runs
Pro Flight Search has tracked every published board update for UA1679 across the SFO and CUN boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 2 completed legs so far: landed +10 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how UA1679 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 SFO and CUN published them.
Planning around UA1679? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Pro Flight Search — UA1679 San Francisco to Cancún on-time performance, measured from the SFO and CUN airport boards.
https://proflightsearch.com/flight/UA1679
.