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Flight Reliability

UA 308 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 308 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

66%
Arrive within 15 minutes
23 min
Average arrival delay
1.1%
Cancelled
3 min
Median arrival delay

Based on 545 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon64%(77 flights)
  • Tue70%(80 flights)
  • Wed67%(79 flights)
  • Thu68%(80 flights)
  • Fri73%(81 flights)
  • Sat67%(55 flights)
  • Sun56%(80 flights)
On-time by departure window
  • 9 AM–12 PM—(1 flights)
  • 12–3 PM—(5 flights)
  • 3–6 PM59%(291 flights)
  • 6–9 PM74%(234 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
86%
May

Jun 44% → May 86% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202544%55
July 202527%30
August 202557%28
September 202562%52
October 202560%58
November 202557%28
December 202571%55
January 202683%35
February 202683%42
March 202670%37
April 202680%55
May 202686%57
Departures on time
78%
Diverted
1.3%
Flights flown
532
Months covered
12

Keep nerding

Based on 545 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.