About 1 in 4 UA 1780 flights from Houston arrived 15+ minutes late, diverted or cancelled over the past year (22%); 0.6% were cancelled. The typical flight landed 5 minutes early.
UA 1780: IAH → DSM
Scheduled to leave Houston at 8:12 p.m. local time. Over the past year it arrived on time 78% of the time (323 flights), in line with other UA flights on the route at that hour (80%). Last seen in the data Aug 10, 2026.
Usually United Airlines's last flight of the day from Houston to Des Moines (100% of days). United Airlines's last IAH–DSM flight was cancelled 0.5% of the time, against 1.4% for its earlier ones. If it's cancelled, the next United Airlines flight is usually around 11:55 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 47 | 79% |
| Tuesday | 47 | 77% |
| Wednesday | 47 | 87% |
| Thursday | 45 | 82% |
| Friday | 46 | 76% |
| Saturday | 45 | 71% |
| Sunday | 46 | 72% |
Why it was late
All flights IAH → DSM · Connecting off UA 1780? Check the risk
Questions
How often is UA 1780 from IAH to DSM late?
United Airlines 1780 from Houston, TX to Des Moines, IA arrived 15 or more minutes late, was diverted or was cancelled on 22% of 323 scheduled flights between September 2025 and August 2026. 0.6% 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.