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Flight Reliability

UA 1833 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1833 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

90%
Arrive within 15 minutes
6 min early
Average arrival delay
2.6%
Cancelled
13 min early
Median arrival delay

Based on 496 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon84%(68 flights)
  • Tue94%(71 flights)
  • Wed93%(70 flights)
  • Thu93%(70 flights)
  • Fri91%(70 flights)
  • Sat86%(65 flights)
  • Sun90%(68 flights)
On-time by departure window
  • 6–9 AM94%(423 flights)
  • 9 AM–12 PM66%(59 flights)
On-time trend by month
98%
May

Jun 100% → May 98% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 2025100%30
July 202593%27
August 202598%41
September 202592%51
October 202586%36
November 202586%59
December 202572%32
January 202685%53
February 202688%34
March 202690%49
April 2026100%30
May 202698%40
Departures on time
94%
Diverted
0.2%
Flights flown
482
Months covered
12

Keep nerding

Based on 496 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.