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Route Reliability

Grand Rapids → Houston

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

80
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

Morning flights do better here.

GRR–IAH flights departing between 6–9 AM arrived on time 82% of the time, versus 73% between 3–6 PM.

Sunday scaries are real for this one.

GRR–IAH flights arrived on time 85% of the time on Thursdays. On Sundays: 75%.

Ticking up lately.

GRR–IAH flights arrived on time 83% of the time over the last three months in the data, compared with 78% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon82%(51 flights)
  • Tue77%(52 flights)
  • Wed82%(51 flights)
  • Thu85%(52 flights)
  • Fri75%(52 flights)
  • Sat77%(51 flights)
  • Sun75%(51 flights)
On-time by departure window
  • 6–9 AM82%(236 flights)
  • 3–6 PM73%(124 flights)
On-time trend by month
81%
May

Jun 61% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202561%28
July 202567%30
August 202568%31
September 2025100%30
October 202587%31
November 202583%30
December 202574%31
January 202667%30
February 202693%28
March 202690%29
April 202677%30
May 202681%32

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.