About 1 in 3 UA 5578 flights from Pasco arrived 15+ minutes late, diverted or cancelled over the past year (33%); 0.3% were cancelled. The typical flight landed 6 minutes early.
UA 5578: PSC → SFO
Scheduled to leave Pasco at 1:35 p.m. local time, operated by SkyWest as OO 5578. Over the past year it arrived on time 67% of the time (291 flights), better than other UA flights on the route at that hour (60%). Last seen in the data Aug 31, 2026.
Usually United Airlines's last flight of the day from Pasco to San Francisco (57% of days). United Airlines's last PSC–SFO flight was cancelled 0.5% of the time, against 0.0% for its earlier ones. If it's cancelled, the next United Airlines flight is usually around 7:00 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 45 | 60% |
| Tuesday | 38 | 82% |
| Wednesday | 38 | 71% |
| Thursday | 43 | 58% |
| Friday | 44 | 61% |
| Saturday | 39 | 74% |
| Sunday | 44 | 68% |
Why it was late
All flights PSC → SFO · Connecting off UA 5578? Check the risk
Questions
How often is UA 5578 from PSC to SFO late?
United Airlines 5578 from Pasco/Kennewick/Richland, WA to San Francisco, CA arrived 15 or more minutes late, was diverted or was cancelled on 33% of 291 scheduled flights between September 2025 and August 2026. 0.3% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check United Airlines for today's flight. Method.