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Flight Reliability

UA 1813 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1813 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

59%
Arrive within 15 minutes
30 min
Average arrival delay
2.3%
Cancelled
9 min
Median arrival delay

Based on 353 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon65%(49 flights)
  • Tue53%(49 flights)
  • Wed54%(52 flights)
  • Thu63%(51 flights)
  • Fri58%(50 flights)
  • Sat65%(43 flights)
  • Sun53%(51 flights)
On-time by departure window
  • 6–9 AM—(6 flights)
  • 9 AM–12 PM85%(88 flights)
  • 12–3 PM—(1 flights)
  • 3–6 PM39%(181 flights)
  • 6–9 PM73%(69 flights)
On-time trend by month
67%
May

Jun 66% → May 67% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202566%29
July 202535%29
August 202557%30
September 202573%30
October 202548%31
November 202525%24
December 202555%29
January 202638%29
February 202668%28
March 202683%30
April 202683%29
May 202667%27
Departures on time
76%
Diverted
0%
Flights flown
345
Months covered
12

Keep nerding

Based on 353 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.