About 1 in 13 UA 491 flights from Houston arrived 15+ minutes late, diverted or cancelled over the past year (8%); 0.0% were cancelled. The typical flight landed 13 minutes early.
UA 491: IAH → MSY
Scheduled to leave Houston at 7:20 a.m. local time. Over the past year it arrived on time 92% of the time (344 flights), in line with other UA flights on the route at that hour (92%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 53 | 96% |
| Tuesday | 51 | 92% |
| Wednesday | 43 | 93% |
| Thursday | 45 | 89% |
| Friday | 51 | 92% |
| Saturday | 50 | 90% |
| Sunday | 51 | 92% |
Why it was late
All flights IAH → MSY · Connecting off UA 491? Check the risk
UA 491: LAX → IAH
Scheduled to leave Los Angeles at 12:55 a.m. local time. Over the past year it arrived on time 90% of the time (286 flights), in line with other UA flights on the route at that hour (89%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 43 | 95% |
| Tuesday | 39 | 82% |
| Wednesday | 38 | 87% |
| Thursday | 42 | 93% |
| Friday | 41 | 88% |
| Saturday | 42 | 86% |
| Sunday | 41 | 98% |
Why it was late
All flights LAX → IAH · Connecting off UA 491? Check the risk
Questions
How often is UA 491 from IAH to MSY late?
United Airlines 491 from Houston, TX to New Orleans, LA arrived 15 or more minutes late, was diverted or was cancelled on 8% of 344 scheduled flights between September 2025 and August 2026. 0.0% were cancelled.
How often is UA 491 from LAX to IAH late?
United Airlines 491 from Los Angeles, CA to Houston, TX arrived 15 or more minutes late, was diverted or was cancelled on 10% of 286 scheduled flights between September 2025 and August 2026. 0.4% 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.