Route Reliability
Houston → Des Moines
IAH–DSM · 802 miles · George Bush Intercontinental Airport to Des Moines International Airport
- 79%
- Arrive within 15 minutes
- 6 min
- Average arrival delay
- 1.2%
- Cancelled
- 728
- Flights in the data
Data through May 2026.
United Airlines is the only airline in this data on this route, arriving on time 79% of the time across 728 flights. No comparison to make.
What the data says
The 12–3 PM departure wins.
IAH–DSM flights departing between 12–3 PM arrived on time 89% of the time, versus 74% between 6–9 PM.
Wednesday has been the better bet.
A small edge: 81% on time on Wednesdays against 77% on Sundays.
Recent months have been rougher.
IAH–DSM flights arrived on time 80% of the time over the last three months in the data, compared with 89% in the three months before that.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon78%(102 flights)
- Tue80%(104 flights)
- Wed81%(101 flights)
- Thu80%(100 flights)
- Fri79%(104 flights)
- Sat77%(101 flights)
- Sun77%(104 flights)
- 9 AM–12 PM81%(248 flights)
- 12–3 PM89%(110 flights)
- 3–6 PM—(2 flights)
- 6–9 PM74%(356 flights)
Jun 60% → May 76% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 60% | 60 |
| July 2025 | 77% | 61 |
| August 2025 | 65% | 60 |
| September 2025 | 82% | 60 |
| October 2025 | 87% | 62 |
| November 2025 | 70% | 57 |
| December 2025 | 77% | 61 |
| January 2026 | 93% | 60 |
| February 2026 | 96% | 55 |
| March 2026 | 80% | 59 |
| April 2026 | 85% | 59 |
| May 2026 | 76% | 62 |
Same trip, other airports
Keep nerding
Based on 728 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.