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Flight Reliability

UA 5533 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 5533 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

70%
Arrive within 15 minutes
20 min
Average arrival delay
0.9%
Cancelled
2 min early
Median arrival delay

Based on 329 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon64%(52 flights)
  • Tue64%(42 flights)
  • Wed74%(50 flights)
  • Thu76%(50 flights)
  • Fri64%(45 flights)
  • Sat70%(33 flights)
  • Sun79%(52 flights)
On-time by departure window
  • 6–9 AM59%(17 flights)
  • 12–3 PM69%(32 flights)
  • 3–6 PM70%(108 flights)
  • 6–9 PM69%(151 flights)
  • 9 PM–12 AM100%(16 flights)
On-time trend by month
77%
May

Jun 41% → May 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202541%27
July 202567%21
August 202575%24
September 202566%29
October 202567%27
November 202580%30
December 202576%29
January 202655%29
February 202685%26
March 202696%22
April 202666%29
May 202677%31
Departures on time
75%
Diverted
0.6%
Flights flown
324
Months covered
12

Keep nerding

Based on 329 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.