UA1939 San FranciscoSFO · 12:35 OrlandoMCO · 21:02
UA1939 by United Airlines flies from San Francisco (SFO) to Orlando (MCO) for the Sun, Oct 18 departure.
estimated arrival at MCO · local time · ~3h 37m from now
position updated 5m ago · checking again in 90s
Live position · flown path, last 4h 44m
Where the minutes go
last 4 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at SFO and MCO 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 San Francisco to Orlando flights today
same route · United AirlinesIf UA1939 is cancelled, these are the other United Airlines nonstop flights from San Francisco to Orlando on the same day, with scheduled departure times in SFO local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UA1939 actually runs
Pro Flight Search has tracked every published board update for UA1939 across the SFO and MCO boards: schedule changes, gate pushes and actual clocks. Usually lands ~8 min late. Based on 3 confirmed landings · 3/3 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how UA1939 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 MCO published them.
Planning around UA1939? 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 — UA1939 San Francisco to Orlando on-time performance, measured from the SFO and MCO airport boards.
https://proflightsearch.com/flight/UA1939
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