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Flight Reliability

UA 5253 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 5253 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

72%
Arrive within 15 minutes
18 min
Average arrival delay
3.7%
Cancelled
1 min early
Median arrival delay

Based on 347 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon71%(44 flights)
  • Tue74%(49 flights)
  • Wed70%(50 flights)
  • Thu75%(48 flights)
  • Fri72%(50 flights)
  • Sat64%(47 flights)
  • Sun82%(44 flights)
On-time by departure window
  • 6–9 AM92%(61 flights)
  • 9 AM–12 PM79%(130 flights)
  • 12–3 PM76%(21 flights)
  • 3–6 PM61%(51 flights)
  • 6–9 PM55%(49 flights)
  • 9 PM–12 AM40%(20 flights)
On-time trend by month
77%
May

Jun 75% → May 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202575%20
July 202543%28
August 202567%27
September 202563%30
October 202571%31
November 202585%26
December 202582%27
January 202673%30
February 202685%27
March 202656%27
April 202693%28
May 202677%31
Departures on time
74%
Diverted
0.6%
Flights flown
332
Months covered
12

Keep nerding

Based on 347 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.