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Route Reliability

Pittsburgh → Houston

PIT–IAH · 1,117 miles · Pittsburgh International Airport to George Bush Intercontinental Airport

89
Pretty Reliable
WanderNerd Reliability Score
86%
Arrive within 15 minutes
5 min early
Average arrival delay
0.6%
Cancelled
1,045
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 1,045 flights. No comparison to make.

What the data says

Morning flights do better here.

PIT–IAH flights departing between 6–9 AM arrived on time 94% of the time, versus 73% between 3–6 PM.

Thursday comes out ahead.

A small edge: 89% on time on Thursdays against 82% on Fridays.

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
  • Mon85%(150 flights)
  • Tue88%(144 flights)
  • Wed85%(149 flights)
  • Thu89%(152 flights)
  • Fri82%(149 flights)
  • Sat89%(140 flights)
  • Sun83%(149 flights)
On-time by departure window
  • 6–9 AM94%(359 flights)
  • 12–3 PM90%(330 flights)
  • 3–6 PM73%(324 flights)
  • 6–9 PM75%(20 flights)
On-time trend by month
83%
May

Jun 74% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202574%83
July 202579%85
August 202581%88
September 202593%85
October 202590%93
November 202588%88
December 202582%78
January 202689%84
February 202695%78
March 202687%92
April 202688%90
May 202683%89

Same trip, other airports

Keep nerding

Based on 1,045 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.