About 1 in 5 UA 1148 flights from Houston arrived 15+ minutes late, diverted or cancelled over the past year (21%); 0.4% were cancelled. The typical flight landed 10 minutes early.
UA 1148: IAH → SMF
Scheduled to leave Houston at 8:35 p.m. local time. Over the past year it arrived on time 79% of the time (247 flights), in line with other UA flights on the route at that hour (77%). Last seen in the data Aug 31, 2026.
Usually United Airlines's last flight of the day from Houston to Sacramento (84% of days). United Airlines's last IAH–SMF flight was cancelled 0.3% of the time, against 0.0% for its earlier ones. If it's cancelled, the next United Airlines flight is usually around 10:00 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 37 | 76% |
| Tuesday | 33 | 82% |
| Wednesday | 33 | 88% |
| Thursday | 37 | 84% |
| Friday | 37 | 81% |
| Saturday | 33 | 73% |
| Sunday | 37 | 68% |
Why it was late
All flights IAH → SMF · Connecting off UA 1148? Check the risk
UA 1148: SMF → ORD
Scheduled to leave Sacramento at 11:59 p.m. local time. Over the past year it arrived on time 83% of the time (159 flights), in line with other UA flights on the route at that hour (81%). Last seen in the data Aug 10, 2026.
Usually United Airlines's last flight of the day from Sacramento to Chicago (100% of days). United Airlines's last SMF–ORD flight was cancelled 1.4% of the time, against 1.3% 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 | 23 | 78% |
| Tuesday | 22 | 86% |
| Wednesday | 22 | 68% |
| Thursday | 23 | 87% |
| Friday | 23 | 78% |
| Saturday | 23 | 96% |
| Sunday | 23 | 87% |
Why it was late
All flights SMF → ORD · Connecting off UA 1148? Check the risk
Questions
How often is UA 1148 from IAH to SMF late?
United Airlines 1148 from Houston, TX to Sacramento, CA arrived 15 or more minutes late, was diverted or was cancelled on 21% of 247 scheduled flights between September 2025 and August 2026. 0.4% were cancelled.
How often is UA 1148 from SMF to ORD late?
United Airlines 1148 from Sacramento, CA to Chicago, IL arrived 15 or more minutes late, was diverted or was cancelled on 17% of 159 scheduled flights between September 2025 and August 2026. 3.1% 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.