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Flight Reliability

UA 1217 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1217 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

87%
Arrive within 15 minutes
2 min
Average arrival delay
0.4%
Cancelled
6 min early
Median arrival delay

Based on 522 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon86%(77 flights)
  • Tue92%(76 flights)
  • Wed85%(74 flights)
  • Thu84%(75 flights)
  • Fri91%(74 flights)
  • Sat84%(76 flights)
  • Sun88%(67 flights)
On-time by departure window
  • 3–6 AM100%(18 flights)
  • 6–9 AM88%(139 flights)
  • 9 AM–12 PM86%(362 flights)
On-time trend by month
92%
May

Jun 94% → May 92% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202594%35
July 202577%57
August 202588%49
September 202593%30
October 202589%36
November 202585%53
December 202578%45
January 202681%31
February 202693%28
March 202688%33
April 202692%60
May 202692%62
Departures on time
89%
Diverted
0.2%
Flights flown
519
Months covered
12

Keep nerding

Based on 522 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.