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Flight Reliability

UA 3491 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 3491 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

90%
Arrive within 15 minutes
4 min early
Average arrival delay
3.5%
Cancelled
10 min early
Median arrival delay

Based on 423 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon82%(60 flights)
  • Tue91%(53 flights)
  • Wed90%(59 flights)
  • Thu94%(62 flights)
  • Fri85%(58 flights)
  • Sat95%(57 flights)
  • Sun93%(59 flights)
On-time by departure window
  • 6–9 AM94%(197 flights)
  • 9 AM–12 PM88%(120 flights)
  • 12–3 PM84%(31 flights)
  • 6–9 PM85%(26 flights)
  • 9 PM–12 AM79%(34 flights)
On-time trend by month
84%
May

Jun 85% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202585%33
July 202596%50
August 202596%47
September 2025100%29
October 202590%31
November 202596%26
December 202588%33
January 202690%31
February 202693%28
March 202677%43
April 202681%26
May 202684%31
Departures on time
91%
Diverted
0%
Flights flown
408
Months covered
12

Keep nerding

Based on 423 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.