Skip to content
WanderNerd
Check a flight

Flight Reliability

UA 2855 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 2855 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

83%
Arrive within 15 minutes
2 min
Average arrival delay
0.2%
Cancelled
6 min early
Median arrival delay

Based on 630 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon82%(89 flights)
  • Tue87%(87 flights)
  • Wed81%(88 flights)
  • Thu84%(93 flights)
  • Fri75%(91 flights)
  • Sat84%(83 flights)
  • Sun88%(94 flights)
On-time by departure window
  • 6–9 AM92%(107 flights)
  • 9 AM–12 PM83%(181 flights)
  • 12–3 PM80%(248 flights)
  • 3–6 PM71%(56 flights)
  • 6–9 PM97%(33 flights)
On-time trend by month
83%
May

Jun 80% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202580%60
July 202571%61
August 202588%59
September 202593%57
October 202585%60
November 202578%49
December 202585%48
January 202690%29
February 202680%44
March 202683%60
April 202685%58
May 202683%40
Departures on time
84%
Diverted
0.6%
Flights flown
625
Months covered
12

Keep nerding

Based on 630 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.