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Flight Reliability

UA 4729 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 4729 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
12 min
Average arrival delay
1.7%
Cancelled
2 min early
Median arrival delay

Based on 361 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon66%(50 flights)
  • Tue84%(50 flights)
  • Wed62%(52 flights)
  • Thu82%(50 flights)
  • Fri69%(52 flights)
  • Sat73%(51 flights)
  • Sun72%(50 flights)
On-time by departure window
  • 6–9 AM—(7 flights)
  • 12–3 PM72%(306 flights)
  • 3–6 PM63%(19 flights)
  • 6–9 PM—(9 flights)
  • 9 PM–12 AM93%(14 flights)
On-time trend by month
43%
May

Jun 73% → May 43% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202573%30
July 202587%31
August 202590%30
September 202587%30
October 202584%31
November 202579%29
December 202557%30
January 202662%29
February 202677%26
March 202683%30
April 202645%29
May 202643%30
Departures on time
74%
Diverted
0%
Flights flown
355
Months covered
12

Keep nerding

Based on 361 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.