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Route Reliability

Houston → Grand Rapids

IAH–GRR · 1,042 miles · George Bush Intercontinental Airport to Gerald R. Ford International Airport

81
Pretty Reliable
WanderNerd Reliability Score
79%
Arrive within 15 minutes
8 min
Average arrival delay
1.4%
Cancelled
366
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 366 flights. No comparison to make.

What the data says

6–9 PM has a slight edge.

Departures between 6–9 PM arrived on time 81% of the time, against 76% between 12–3 PM.

Saturdays have been rough.

IAH–GRR flights arrived on time 86% of the time on Thursdays and just 69% on Saturdays. That gap is worth planning around.

Slipping a little lately.

IAH–GRR flights arrived on time 81% of the time over the last three months in the data, compared with 84% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon79%(52 flights)
  • Tue79%(52 flights)
  • Wed85%(52 flights)
  • Thu86%(51 flights)
  • Fri81%(52 flights)
  • Sat69%(49 flights)
  • Sun77%(52 flights)
On-time by departure window
  • 12–3 PM76%(125 flights)
  • 3–6 PM—(1 flights)
  • 6–9 PM81%(234 flights)
On-time trend by month
87%
May

Jun 83% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%29
July 202567%30
August 202574%31
September 202584%31
October 202577%31
November 202573%30
December 202587%31
January 202679%29
February 202686%28
March 202669%29
April 202687%30
May 202687%31

Keep nerding

Based on 366 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.