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Flight Reliability

UA 4245 · United Airlines

JAN → Houston (JAN–IAH)98% of its flights flew this route. The rest (IAD–CMH, SYR–IAD) are included in these numbers.

85
Pretty Reliable
WanderNerd Reliability Score
85%
Arrive within 15 minutes
4 min
Average arrival delay
0.6%
Cancelled
14 min early
Median arrival delay

Based on 351 historical flights. Data through May 2026.

What the data says

12–3 PM has a slight edge.

Departures between 12–3 PM arrived on time 86% of the time, against 80% between 9 AM–12 PM.

Friday is doing you no favors.

UA 4245 arrived on time 94% of the time on Thursdays and just 77% on Fridays. That gap is worth planning around.

A bit ahead of the JAN–IAH route.

UA 4245 arrived on time 85% of the time, versus 80% across the JAN–IAH route.

A bit ahead of the United Airlines network.

UA 4245 arrived on time 85% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon82%(50 flights)
  • Tue93%(45 flights)
  • Wed83%(52 flights)
  • Thu94%(51 flights)
  • Fri77%(51 flights)
  • Sat78%(46 flights)
  • Sun86%(49 flights)
On-time by departure window
  • 9 AM–12 PM80%(54 flights)
  • 12–3 PM86%(290 flights)
On-time trend by month
82%
May

Jun 77% → May 82% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%26
July 202577%30
August 202584%31
September 202593%30
October 202593%29
November 202570%27
December 202581%31
January 202697%31
February 2026100%23
March 202679%29
April 202683%29
May 202682%28
Departures on time
85%
Diverted
1.4%
Flights flown
344
Months covered
12

Same route, other flights

Keep nerding

Based on 351 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.