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Flight Reliability

UA 1211 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1211 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

74%
Arrive within 15 minutes
16 min
Average arrival delay
0.9%
Cancelled
3 min early
Median arrival delay

Based on 455 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon74%(68 flights)
  • Tue70%(63 flights)
  • Wed71%(58 flights)
  • Thu77%(68 flights)
  • Fri72%(67 flights)
  • Sat80%(59 flights)
  • Sun77%(68 flights)
On-time by departure window
  • 6–9 AM97%(69 flights)
  • 9 AM–12 PM—(4 flights)
  • 12–3 PM70%(203 flights)
  • 3–6 PM69%(112 flights)
  • 6–9 PM57%(44 flights)
  • 9 PM–12 AM100%(19 flights)
On-time trend by month
70%
May

Jun 57% → May 70% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202557%35
July 202581%57
August 202566%32
September 202577%30
October 202587%31
November 202568%28
December 202586%29
January 2026100%31
February 202686%28
March 202656%57
April 202672%46
May 202670%47
Departures on time
78%
Diverted
0%
Flights flown
451
Months covered
12

Keep nerding

Based on 455 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.