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Flight Reliability

UA 1997 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1997 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

72%
Arrive within 15 minutes
15 min
Average arrival delay
1.9%
Cancelled
2 min early
Median arrival delay

Based on 517 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon77%(73 flights)
  • Tue86%(73 flights)
  • Wed71%(70 flights)
  • Thu74%(72 flights)
  • Fri69%(75 flights)
  • Sat60%(72 flights)
  • Sun65%(72 flights)
On-time by departure window
  • 6–9 AM36%(31 flights)
  • 12–3 PM83%(30 flights)
  • 6–9 PM74%(179 flights)
  • 9 PM–12 AM73%(267 flights)
On-time trend by month
78%
May

Jun 50% → May 78% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202550%30
July 202546%28
August 202568%31
September 202567%36
October 202562%61
November 202574%57
December 202575%32
January 202679%29
February 202686%28
March 202671%56
April 202690%60
May 202678%59
Departures on time
74%
Diverted
0%
Flights flown
507
Months covered
12

Keep nerding

Based on 517 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.