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Route Reliability

Des Moines → Houston

DSM–IAH · 802 miles · Des Moines International Airport to George Bush Intercontinental Airport

86
Pretty Reliable
WanderNerd Reliability Score
86%
Arrive within 15 minutes
2 min
Average arrival delay
1.6%
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 86% of the time across 728 flights. No comparison to make.

What the data says

Morning-you made the right choice.

DSM–IAH flights departing between 6–9 AM arrived on time 91% of the time, versus 80% between 3–6 PM.

Thursday has been the better bet.

A small edge: 88% on time on Thursdays against 83% on Mondays.

Slipping a little lately.

DSM–IAH flights arrived on time 84% of the time over the last three months in the data, compared with 88% 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

On-time by weekday
  • Mon83%(102 flights)
  • Tue87%(104 flights)
  • Wed84%(102 flights)
  • Thu88%(100 flights)
  • Fri87%(103 flights)
  • Sat86%(100 flights)
  • Sun85%(103 flights)
On-time by departure window
  • 3–6 AM—(1 flights)
  • 6–9 AM91%(357 flights)
  • 12–3 PM81%(210 flights)
  • 3–6 PM80%(146 flights)
On-time trend by month
79%
May

Jun 73% → May 79% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202573%59
July 202585%61
August 202586%62
September 202593%60
October 202590%62
November 202586%56
December 202584%61
January 202690%60
February 202691%55
March 202691%57
April 202682%60
May 202679%61

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.