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Flight Reliability

UA 5633 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 5633 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

73%
Arrive within 15 minutes
21 min
Average arrival delay
2.6%
Cancelled
3 min early
Median arrival delay

Based on 349 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon75%(51 flights)
  • Tue71%(48 flights)
  • Wed75%(51 flights)
  • Thu75%(52 flights)
  • Fri71%(45 flights)
  • Sat75%(48 flights)
  • Sun71%(45 flights)
On-time by departure window
  • 6–9 AM88%(207 flights)
  • 12–3 PM68%(19 flights)
  • 3–6 PM39%(65 flights)
  • 6–9 PM53%(36 flights)
  • 9 PM–12 AM77%(13 flights)
On-time trend by month
86%
May

Jun 100% → May 86% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 2025100%29
July 202545%31
August 202590%29
September 202586%29
October 202590%31
November 202590%29
December 202558%31
January 202641%29
February 202627%26
March 202674%19
April 202689%28
May 202686%29
Departures on time
78%
Diverted
0%
Flights flown
340
Months covered
12

Keep nerding

Based on 349 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.