About 1 in 5 UA 589 flights from Houston arrived 15+ minutes late, diverted or cancelled over the past year (20%); 0.0% were cancelled. The typical flight landed 11 minutes early.
UA 589: IAH → SFO
Scheduled to leave Houston at 3:30 p.m. local time. Over the past year it arrived on time 80% of the time (348 flights), worse than other UA flights on the route at that hour (84%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 51 | 76% |
| Tuesday | 49 | 92% |
| Wednesday | 49 | 84% |
| Thursday | 50 | 68% |
| Friday | 50 | 68% |
| Saturday | 49 | 84% |
| Sunday | 50 | 86% |
Why it was late
All flights IAH → SFO · Connecting off UA 589? Check the risk
UA 589: SFO → SNA
Scheduled to leave San Francisco at 7:10 p.m. local time. Over the past year it arrived on time 88% of the time (323 flights), in line with other UA flights on the route at that hour (87%). Last seen in the data Aug 31, 2026.
Usually United Airlines's last flight of the day from San Francisco to Santa Ana (100% of days). United Airlines's last SFO–SNA flight was cancelled 0.0% of the time, against 0.6% for its earlier ones. If it's cancelled, the next United Airlines flight is usually around 7:15 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 47 | 85% |
| Tuesday | 47 | 89% |
| Wednesday | 47 | 96% |
| Thursday | 47 | 89% |
| Friday | 47 | 77% |
| Saturday | 42 | 90% |
| Sunday | 46 | 89% |
Why it was late
All flights SFO → SNA · Connecting off UA 589? Check the risk
Questions
How often is UA 589 from IAH to SFO late?
United Airlines 589 from Houston, TX to San Francisco, CA arrived 15 or more minutes late, was diverted or was cancelled on 20% of 348 scheduled flights between September 2025 and August 2026. 0.0% were cancelled.
How often is UA 589 from SFO to SNA late?
United Airlines 589 from San Francisco, CA to Santa Ana, CA arrived 15 or more minutes late, was diverted or was cancelled on 12% of 323 scheduled flights between September 2025 and August 2026. 0.0% 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.