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Flight Reliability

UA 4642 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 4642 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

65%
Arrive within 15 minutes
32 min
Average arrival delay
3.3%
Cancelled
0 min
Median arrival delay

Based on 336 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon61%(51 flights)
  • Tue60%(47 flights)
  • Wed69%(49 flights)
  • Thu68%(47 flights)
  • Fri64%(42 flights)
  • Sat68%(38 flights)
  • Sun66%(44 flights)
On-time by departure window
  • 6–9 AM100%(15 flights)
  • 12–3 PM61%(62 flights)
  • 3–6 PM57%(196 flights)
  • 6–9 PM—(6 flights)
  • 9 PM–12 AM97%(39 flights)
On-time trend by month
83%
May

Jun 44% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202544%27
July 202539%28
August 202541%29
September 202558%26
October 202565%31
November 202596%25
December 202560%30
January 202686%22
February 2026100%18
March 202656%25
April 202671%28
May 202683%29
Departures on time
67%
Diverted
2.1%
Flights flown
318
Months covered
12

Keep nerding

Based on 336 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.