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Route Reliability

Houston → Birmingham

IAH–BHM · 562 miles · George Bush Intercontinental Airport to Birmingham–Shuttlesworth International Airport

82
Pretty Reliable
WanderNerd Reliability Score
81%
Arrive within 15 minutes
4 min
Average arrival delay
1.5%
Cancelled
1,680
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 81% of the time across 1,680 flights. No comparison to make.

What the data says

Morning flights do better here.

IAH–BHM flights departing between 6–9 AM arrived on time 85% of the time, versus 70% between 3–6 PM.

Friday is doing you no favors.

IAH–BHM flights arrived on time 85% of the time on Wednesdays. On Fridays: 74%.

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
  • Mon77%(253 flights)
  • Tue82%(232 flights)
  • Wed85%(236 flights)
  • Thu83%(247 flights)
  • Fri74%(242 flights)
  • Sat85%(202 flights)
  • Sun83%(240 flights)
On-time by departure window
  • 12–3 AM—(2 flights)
  • 6–9 AM85%(349 flights)
  • 9 AM–12 PM—(3 flights)
  • 12–3 PM83%(684 flights)
  • 3–6 PM70%(141 flights)
  • 6–9 PM80%(473 flights)
On-time trend by month
83%
May

Jun 60% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202560%161
July 202571%157
August 202579%157
September 202587%143
October 202584%142
November 202583%134
December 202584%135
January 202690%114
February 202689%120
March 202685%121
April 202688%121
May 202683%147

Same trip, other airports

Keep nerding

Based on 1,680 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.