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Flight Reliability

UA 4224 · United Airlines

AMA → Houston (AMA–IAH)100% of its flights flew this route. The rest (CRP–IAH) are included in these numbers.

96
Nerd Approved
WanderNerd Reliability Score
91%
Arrive within 15 minutes
6 min early
Average arrival delay
0.8%
Cancelled
17 min early
Median arrival delay

Based on 364 historical flights. Data through May 2026.

What the data says

Mornings have a slight edge.

Departures between 6–9 AM arrived on time 94% of the time, against 91% between 9 AM–12 PM.

Skip Wednesday if you can.

UA 4224 arrived on time 94% of the time on Sundays. On Wednesdays: 87%.

A bit ahead of the AMA–IAH route.

UA 4224 arrived on time 91% of the time, versus 86% across the AMA–IAH route.

Better than the United Airlines network average.

UA 4224 arrived on time 91% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon88%(51 flights)
  • Tue92%(52 flights)
  • Wed87%(52 flights)
  • Thu94%(51 flights)
  • Fri92%(52 flights)
  • Sat88%(51 flights)
  • Sun94%(52 flights)
On-time by departure window
  • 3–6 AM—(1 flights)
  • 6–9 AM94%(18 flights)
  • 9 AM–12 PM91%(342 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 202594%31
August 202594%31
September 202593%30
October 202587%31
November 202587%30
December 202597%31
January 202686%28
February 202696%28
March 202690%31
April 202697%30
May 202687%31
Departures on time
91%
Diverted
0%
Flights flown
361
Months covered
12

Same route, other flights

Keep nerding

Based on 364 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.