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Flight Reliability

UA 4396 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 4396 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

82%
Arrive within 15 minutes
11 min
Average arrival delay
2.6%
Cancelled
7 min early
Median arrival delay

Based on 349 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon78%(50 flights)
  • Tue82%(44 flights)
  • Wed85%(47 flights)
  • Thu84%(49 flights)
  • Fri81%(52 flights)
  • Sat87%(47 flights)
  • Sun77%(51 flights)
On-time by departure window
  • 6–9 AM82%(176 flights)
  • 9 AM–12 PM88%(102 flights)
  • 12–3 PM80%(15 flights)
  • 3–6 PM67%(12 flights)
  • 6–9 PM66%(35 flights)
On-time trend by month
90%
May

Jun 77% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%17
July 202583%30
August 202590%31
September 202583%24
October 202570%30
November 202561%28
December 202577%30
January 202695%21
February 202686%22
March 202673%30
April 202693%27
May 202690%50
Departures on time
85%
Diverted
0%
Flights flown
340
Months covered
12

Keep nerding

Based on 349 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.