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Flight Reliability

UA 4748 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 4748 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

72%
Arrive within 15 minutes
19 min
Average arrival delay
2.4%
Cancelled
2 min early
Median arrival delay

Based on 337 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon75%(48 flights)
  • Tue76%(49 flights)
  • Wed75%(51 flights)
  • Thu80%(45 flights)
  • Fri67%(46 flights)
  • Sat70%(43 flights)
  • Sun64%(47 flights)
On-time by departure window
  • 6–9 AM78%(37 flights)
  • 9 AM–12 PM91%(32 flights)
  • 12–3 PM79%(53 flights)
  • 3–6 PM—(8 flights)
  • 6–9 PM66%(199 flights)
On-time trend by month
92%
May

Jun 33% → May 92% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202533%30
July 202563%30
August 202576%25
September 202590%29
October 202581%31
November 202571%28
December 202556%18
January 202667%27
February 202674%27
March 202677%30
April 202687%30
May 202692%24
Departures on time
76%
Diverted
0%
Flights flown
329
Months covered
12

Keep nerding

Based on 337 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.