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Flight Reliability

UA 5108 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 5108 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

70%
Arrive within 15 minutes
23 min
Average arrival delay
2.8%
Cancelled
0 min
Median arrival delay

Based on 431 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon67%(61 flights)
  • Tue79%(57 flights)
  • Wed71%(63 flights)
  • Thu72%(60 flights)
  • Fri69%(61 flights)
  • Sat72%(54 flights)
  • Sun60%(63 flights)
On-time by departure window
  • 9 AM–12 PM95%(21 flights)
  • 12–3 PM78%(73 flights)
  • 3–6 PM65%(295 flights)
  • 6–9 PM83%(30 flights)
On-time trend by month
45%
May

Jun 67% → May 45% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202567%30
July 202561%31
August 202577%51
September 202581%52
October 202578%36
November 202565%46
December 202555%29
January 202664%28
February 202689%28
March 202666%29
April 202682%28
May 202645%31
Departures on time
72%
Diverted
0%
Flights flown
419
Months covered
12

Keep nerding

Based on 431 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.