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Flight Reliability

UA 1491 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1491 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

82%
Arrive within 15 minutes
4 min
Average arrival delay
0.9%
Cancelled
6 min early
Median arrival delay

Based on 537 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon84%(74 flights)
  • Tue91%(74 flights)
  • Wed77%(75 flights)
  • Thu89%(78 flights)
  • Fri76%(80 flights)
  • Sat84%(74 flights)
  • Sun75%(76 flights)
On-time by departure window
  • 6–9 AM84%(247 flights)
  • 9 AM–12 PM79%(219 flights)
  • 12–3 PM84%(19 flights)
  • 6–9 PM87%(46 flights)
On-time trend by month
81%
May

Jun 91% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202591%35
July 202584%62
August 202582%61
September 202597%37
October 202582%56
November 202563%30
December 202573%44
January 202677%31
February 202689%55
March 202671%42
April 202690%31
May 202681%47
Departures on time
85%
Diverted
0.2%
Flights flown
531
Months covered
12

Keep nerding

Based on 537 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.