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Flight Reliability

UA 1819 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1819 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

66%
Arrive within 15 minutes
25 min
Average arrival delay
2.5%
Cancelled
4 min
Median arrival delay

Based on 630 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon59%(91 flights)
  • Tue65%(93 flights)
  • Wed70%(89 flights)
  • Thu63%(90 flights)
  • Fri71%(87 flights)
  • Sat71%(76 flights)
  • Sun60%(85 flights)
On-time by departure window
  • 9 AM–12 PM84%(55 flights)
  • 12–3 PM68%(65 flights)
  • 3–6 PM65%(176 flights)
  • 6–9 PM56%(150 flights)
  • 9 PM–12 AM67%(165 flights)
On-time trend by month
93%
May

Jun 44% → May 93% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202544%55
July 202550%48
August 202568%37
September 202580%60
October 202579%62
November 202560%52
December 202562%45
January 202673%30
February 202662%45
March 202657%61
April 202668%87
May 202693%29
Departures on time
69%
Diverted
0.5%
Flights flown
611
Months covered
12

Keep nerding

Based on 630 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.