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Flight Reliability

UA 3488 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 3488 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

76%
Arrive within 15 minutes
16 min
Average arrival delay
4.5%
Cancelled
6 min early
Median arrival delay

Based on 400 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon77%(51 flights)
  • Tue81%(57 flights)
  • Wed82%(61 flights)
  • Thu64%(55 flights)
  • Fri80%(54 flights)
  • Sat81%(47 flights)
  • Sun70%(56 flights)
On-time by departure window
  • 9 AM–12 PM—(2 flights)
  • 12–3 PM87%(38 flights)
  • 3–6 PM75%(75 flights)
  • 6–9 PM76%(210 flights)
  • 9 PM–12 AM70%(56 flights)
On-time trend by month
78%
May

Jun 86% → May 78% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202586%22
July 202569%29
August 202585%13
September 202576%29
October 202565%37
November 202580%44
December 202566%44
January 202686%28
February 202671%28
March 202667%27
April 202697%29
May 202678%51
Departures on time
80%
Diverted
0.3%
Flights flown
381
Months covered
12

Keep nerding

Based on 400 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.