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Flight Reliability

UA 2397 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 2397 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

86%
Arrive within 15 minutes
3 min
Average arrival delay
3.1%
Cancelled
14 min early
Median arrival delay

Based on 456 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon88%(66 flights)
  • Tue87%(63 flights)
  • Wed82%(62 flights)
  • Thu76%(62 flights)
  • Fri89%(64 flights)
  • Sat90%(60 flights)
  • Sun86%(64 flights)
On-time by departure window
  • 12–3 PM67%(15 flights)
  • 3–6 PM83%(77 flights)
  • 6–9 PM85%(72 flights)
  • 9 PM–12 AM87%(277 flights)
On-time trend by month
81%
May

Jun 87% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%55
July 202583%58
August 202581%63
September 202587%30
October 202587%31
November 202587%30
December 202583%30
January 202690%29
February 202692%26
March 202690%29
April 202686%29
May 202681%31
Departures on time
82%
Diverted
0.2%
Flights flown
441
Months covered
12

Keep nerding

Based on 456 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.