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Flight Reliability

UA 1780 · United Airlines

Houston → Des Moines (IAH–DSM)95% of its flights flew this route. The rest (SFO–RSW) are included in these numbers.

76
Usually Fine
WanderNerd Reliability Score
74%
Arrive within 15 minutes
11 min
Average arrival delay
1.1%
Cancelled
3 min early
Median arrival delay

Based on 363 historical flights. Data through May 2026.

What the data says

12–3 PM has a slight edge.

Departures between 12–3 PM arrived on time 79% of the time, against 74% between 6–9 PM.

Friday is doing you no favors.

UA 1780 arrived on time 80% of the time on Wednesdays. On Fridays: 69%.

A bit behind the IAH–DSM route.

UA 1780 arrived on time 74% of the time, versus 79% across the IAH–DSM route.

A bit behind the United Airlines network.

UA 1780 arrived on time 74% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon75%(52 flights)
  • Tue77%(52 flights)
  • Wed80%(51 flights)
  • Thu78%(49 flights)
  • Fri69%(51 flights)
  • Sat70%(50 flights)
  • Sun70%(53 flights)
On-time by departure window
  • 12–3 PM79%(19 flights)
  • 6–9 PM74%(339 flights)
On-time trend by month
71%
May

Jun 53% → May 71% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202553%30
July 202566%29
August 202553%30
September 202577%30
October 202584%31
November 202561%28
December 202574%31
January 202690%31
February 2026100%27
March 202683%30
April 202677%30
May 202671%31
Departures on time
71%
Diverted
0.3%
Flights flown
358
Months covered
12

Same route, other flights

Keep nerding

Based on 363 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.