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Flight Reliability

UA 2278 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 2278 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

68%
Arrive within 15 minutes
18 min
Average arrival delay
1.0%
Cancelled
1 min early
Median arrival delay

Based on 511 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon65%(75 flights)
  • Tue82%(71 flights)
  • Wed63%(75 flights)
  • Thu63%(76 flights)
  • Fri72%(78 flights)
  • Sat71%(58 flights)
  • Sun63%(73 flights)
On-time by departure window
  • 9 AM–12 PM56%(64 flights)
  • 12–3 PM84%(43 flights)
  • 3–6 PM70%(168 flights)
  • 6–9 PM50%(125 flights)
  • 9 PM–12 AM88%(106 flights)
On-time trend by month
55%
May

Jun 75% → May 55% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202575%55
July 202555%31
August 202577%47
September 202589%27
October 202569%35
November 202556%45
December 202563%30
January 202663%30
February 202676%45
March 202689%52
April 202655%58
May 202655%51
Departures on time
74%
Diverted
0%
Flights flown
506
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.