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Is UA643 usually on time? San Francisco to Santa Ana
United Airlines flight 643, SFO to SNA. The same number also flies Las Vegas to San Francisco and Santa Ana to Houston; the figures below are for the San Francisco to Santa Ana leg.
Window: last 90 days, about 190 flights observed. Last refreshed: 2026-10-07.
Cancelled
fewer than 1 in 100
over the window
We have seen this flight operate, but not enough arrivals with a confirmed landing time to print a punctuality figure yet. Cancellation and aircraft facts below are from the flights we did observe.
What we have seen
- Cancellations over the window: fewer than 1 in 100, across about 190 flights observed.
- Usual aircraft: Boeing 737 MAX 8.
These describe the last 90 days. They are not a forecast for any one departure.
Related
Frequently asked
- How often is UA643 cancelled?
- Cancellations over the window: fewer than 1 in 100, across about 190 flights observed.
- What aircraft flies UA643?
- UA643 has most often been operated by a Boeing 737 MAX 8 over the last 90 days.
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