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WanderNerd

Flight Reliability

UA 5323 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 5323 moved between routes during this period. Numbers below combine all of them, so treat them as background, not a verdict. For a cleaner answer, check the route you are actually flying.

Combined across all its routes

71%
Arrive within 15 minutes
13 min
Average arrival delay
0.7%
Cancelled
2 min early
Median arrival delay

Based on 285 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon76%(45 flights)
  • Tue75%(32 flights)
  • Wed66%(38 flights)
  • Thu74%(46 flights)
  • Fri68%(41 flights)
  • Sat67%(36 flights)
  • Sun69%(45 flights)
On-time by departure window
  • 6–9 AM83%(52 flights)
  • 9 AM–12 PM92%(12 flights)
  • 12–3 PM59%(99 flights)
  • 3–6 PM75%(114 flights)
  • 9 PM–12 AM(6 flights)
On-time trend by month
47%
May

Jun 72% → May 47% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202572%29
July 202565%31
August 202555%20
October 202577%22
November 202582%17
December 202582%27
January 202684%19
February 202685%20
March 202684%31
April 202648%29
May 202647%30
Departures on time
76%
Diverted
0%
Flights flown
283
Months covered
12

Based on 285 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.