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Flight Reliability

UA 378 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 378 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

86%
Arrive within 15 minutes
4 min
Average arrival delay
0.2%
Cancelled
7 min early
Median arrival delay

Based on 511 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon81%(74 flights)
  • Tue89%(72 flights)
  • Wed85%(75 flights)
  • Thu94%(77 flights)
  • Fri83%(77 flights)
  • Sat86%(58 flights)
  • Sun83%(76 flights)
On-time by departure window
  • 6–9 AM89%(18 flights)
  • 9 AM–12 PM90%(249 flights)
  • 12–3 PM84%(154 flights)
  • 3–6 PM82%(11 flights)
  • 6–9 PM75%(77 flights)
On-time trend by month
83%
May

Jun 93% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%56
July 202574%58
August 202584%56
September 202586%57
October 202582%56
November 202587%30
January 2026100%26
February 202695%43
March 202679%56
April 202697%30
May 202683%40
Departures on time
87%
Diverted
0.2%
Flights flown
509
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.