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Flight Reliability

UA 1218 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1218 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

85%
Arrive within 15 minutes
0 min
Average arrival delay
1.1%
Cancelled
12 min early
Median arrival delay

Based on 375 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon84%(56 flights)
  • Tue91%(34 flights)
  • Wed87%(63 flights)
  • Thu85%(65 flights)
  • Fri81%(59 flights)
  • Sat87%(30 flights)
  • Sun81%(64 flights)
On-time by departure window
  • 6–9 AM96%(23 flights)
  • 9 AM–12 PM—(4 flights)
  • 12–3 PM80%(65 flights)
  • 3–6 PM71%(41 flights)
  • 6–9 PM86%(174 flights)
  • 9 PM–12 AM92%(64 flights)
On-time trend by month
76%
May

Jun 74% → May 76% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202574%39
July 202578%85
August 202588%34
September 202586%22
October 202586%22
November 202588%24
December 202590%31
January 202697%29
February 202696%23
March 202681%16
April 202695%21
May 202676%25
Departures on time
84%
Diverted
0%
Flights flown
371
Months covered
12

Keep nerding

Based on 375 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.