UA1272 Mexico CityMEX · 17:15 San FranciscoSFO · 21:00
UA1272 by United Airlines flies from Mexico City (MEX) to San Francisco (SFO) for the Thu, Sep 10 departure.
arrival expected at SFO · 38 min late
board checked 2m ago · checking again in 45s
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at MEX and SFO 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.
Other Mexico City to San Francisco flights today
same route · United AirlinesIf UA1272 is cancelled, these are the other United Airlines nonstop flights from Mexico City to San Francisco on the same day, with scheduled departure times in MEX local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UA1272 actually runs
Pro Flight Search has tracked every published board update for UA1272 across the MEX and SFO boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 2 completed legs so far: landed +41 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how UA1272 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationAircraft
Recent tails: N17294, N27251.
Board clocks recorded as MEX and SFO published them.
Planning around UA1272? 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 — UA1272 Mexico City to San Francisco on-time performance, measured from the MEX and SFO airport boards.
https://proflightsearch.com/flight/UA1272
.