UA5508 San FranciscoSFO · 18:55 CarlsbadCLD
UA5508 by United Airlines flies from San Francisco (SFO) to Carlsbad (CLD).
scheduled from SFO
Where the minutes go
last 5 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 operation0 cancelled · 5 operations tracked
The route today
live boardsWhen it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other San Francisco to Carlsbad flights today
same route · United AirlinesIf UA5508 is cancelled, these are the other United Airlines nonstop flights from San Francisco to Carlsbad 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 UA5508 actually runs
Pro Flight Search has tracked every published board update for UA5508 across the SFO and CLD boards: schedule changes, gate pushes and actual clocks. Usually departs ~78 min late. Based on 5 confirmed departures · 2/5 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how UA5508 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 CLD published them.
Planning around UA5508? 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 — UA5508 San Francisco to Carlsbad on-time performance, measured from the SFO and CLD airport boards.
https://proflightsearch.com/flight/UA5508
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