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Flight Reliability

UA 1229 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1229 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

81%
Arrive within 15 minutes
3 min
Average arrival delay
0.5%
Cancelled
8 min early
Median arrival delay

Based on 372 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon75%(52 flights)
  • Tue87%(54 flights)
  • Wed82%(55 flights)
  • Thu87%(52 flights)
  • Fri77%(53 flights)
  • Sat80%(50 flights)
  • Sun82%(54 flights)
On-time by departure window
  • 6–9 AM93%(82 flights)
  • 12–3 PM80%(107 flights)
  • 3–6 PM77%(149 flights)
  • 9 PM–12 AM78%(32 flights)
On-time trend by month
86%
May

Jun 90% → May 86% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202590%30
July 202583%30
August 202587%31
September 202560%30
October 202577%31
November 202577%26
December 202583%29
January 202680%30
February 2026100%28
March 202670%54
April 202693%29
May 202686%22
Departures on time
83%
Diverted
0%
Flights flown
370
Months covered
12

Keep nerding

Based on 372 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.