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Flight Reliability

UA 2304 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 2304 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

67%
Arrive within 15 minutes
21 min
Average arrival delay
1.6%
Cancelled
2 min
Median arrival delay

Based on 378 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon75%(56 flights)
  • Tue75%(48 flights)
  • Wed75%(55 flights)
  • Thu55%(56 flights)
  • Fri68%(60 flights)
  • Sat56%(41 flights)
  • Sun65%(54 flights)
On-time by departure window
  • 3–6 AM—(1 flights)
  • 6–9 AM97%(108 flights)
  • 3–6 PM57%(129 flights)
  • 6–9 PM57%(95 flights)
  • 9 PM–12 AM43%(37 flights)
On-time trend by month
84%
May

Jun 96% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202596%27
July 2025100%26
August 202575%28
September 202541%29
October 202554%26
November 202595%21
December 202583%29
January 202653%30
February 202657%28
March 202653%51
April 202648%44
May 202684%31
Departures on time
82%
Diverted
0.5%
Flights flown
370
Months covered
12

Keep nerding

Based on 378 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.