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Flight Reliability

UA 1800 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1800 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

82%
Arrive within 15 minutes
2 min
Average arrival delay
0.4%
Cancelled
7 min early
Median arrival delay

Based on 511 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon81%(70 flights)
  • Tue75%(64 flights)
  • Wed85%(65 flights)
  • Thu78%(77 flights)
  • Fri83%(78 flights)
  • Sat83%(76 flights)
  • Sun85%(78 flights)
On-time by departure window
  • 6–9 AM98%(46 flights)
  • 3–6 PM53%(80 flights)
  • 6–9 PM80%(232 flights)
  • 9 PM–12 AM94%(150 flights)
On-time trend by month
97%
May

Jun 93% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%30
July 202542%31
August 202552%31
September 202586%36
October 202586%87
November 202581%58
December 202573%60
January 202690%41
February 202677%31
March 202694%47
April 2026100%26
May 202697%30
Departures on time
85%
Diverted
0.2%
Flights flown
508
Months covered
12

Keep nerding

Based on 511 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.