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Route Reliability

GPT → Houston

GPT–IAH · 377 miles · GPT Airport to George Bush Intercontinental Airport

84
Pretty Reliable
WanderNerd Reliability Score
83%
Arrive within 15 minutes
5 min
Average arrival delay
1.7%
Cancelled
1,122
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 83% of the time across 1,122 flights. No comparison to make.

What the data says

The 6–9 AM departure wins.

GPT–IAH flights departing between 6–9 AM arrived on time 88% of the time, versus 79% between 9 AM–12 PM.

Saturday is the weak spot.

GPT–IAH flights arrived on time 88% of the time on Tuesdays. On Saturdays: 80%.

Recent months have been rougher.

GPT–IAH flights arrived on time 79% 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

On-time by weekday
  • Mon84%(175 flights)
  • Tue88%(140 flights)
  • Wed84%(140 flights)
  • Thu81%(167 flights)
  • Fri84%(165 flights)
  • Sat80%(149 flights)
  • Sun81%(166 flights)
On-time by departure window
  • 6–9 AM88%(359 flights)
  • 9 AM–12 PM79%(77 flights)
  • 12–3 PM82%(314 flights)
  • 3–6 PM80%(350 flights)
  • 9 PM–12 AM—(2 flights)
On-time trend by month
76%
May

Jun 66% → May 76% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202566%105
July 202580%102
August 202586%99
September 202596%88
October 202586%103
November 202585%102
December 202586%87
January 202691%81
February 202690%76
March 202683%83
April 202678%82
May 202676%94

Keep nerding

Based on 1,122 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.