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Flight Reliability

UA 1178 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1178 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

64%
Arrive within 15 minutes
23 min
Average arrival delay
1.9%
Cancelled
4 min
Median arrival delay

Based on 414 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon67%(58 flights)
  • Tue61%(57 flights)
  • Wed69%(61 flights)
  • Thu64%(58 flights)
  • Fri57%(56 flights)
  • Sat72%(53 flights)
  • Sun60%(58 flights)
On-time by departure window
  • 12–3 PM76%(79 flights)
  • 3–6 PM60%(101 flights)
  • 6–9 PM62%(221 flights)
On-time trend by month
52%
May

Jun 80% → May 52% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202580%35
July 202554%59
August 202574%43
September 202577%30
October 202565%31
November 202566%29
December 202576%33
January 202668%25
February 202641%27
March 202662%29
April 202659%29
May 202652%31
Departures on time
71%
Diverted
1.2%
Flights flown
401
Months covered
12

Keep nerding

Based on 414 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.