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Flight Reliability

UA 333 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 333 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

68%
Arrive within 15 minutes
17 min
Average arrival delay
1.5%
Cancelled
1 min
Median arrival delay

Based on 399 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon66%(56 flights)
  • Tue69%(54 flights)
  • Wed74%(54 flights)
  • Thu61%(59 flights)
  • Fri70%(57 flights)
  • Sat77%(56 flights)
  • Sun57%(56 flights)
On-time by departure window
  • 9 AM–12 PM—(5 flights)
  • 12–3 PM55%(53 flights)
  • 3–6 PM75%(24 flights)
  • 6–9 PM69%(310 flights)
On-time trend by month
65%
May

Jun 77% → May 65% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%30
July 202558%31
August 202570%30
September 202531%26
October 202558%31
November 202567%30
December 202567%30
January 202672%29
February 202677%22
March 202678%51
April 202684%31
May 202665%51
Departures on time
72%
Diverted
0.3%
Flights flown
392
Months covered
12

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Based on 399 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.