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Flight Reliability

UA 1400 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1400 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

72%
Arrive within 15 minutes
16 min
Average arrival delay
0.7%
Cancelled
3 min
Median arrival delay

Based on 438 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon71%(61 flights)
  • Tue78%(60 flights)
  • Wed67%(64 flights)
  • Thu72%(61 flights)
  • Fri67%(61 flights)
  • Sat75%(60 flights)
  • Sun71%(65 flights)
On-time by departure window
  • 9 AM–12 PM90%(29 flights)
  • 12–3 PM74%(194 flights)
  • 3–6 PM72%(145 flights)
  • 6–9 PM50%(38 flights)
  • 9 PM–12 AM58%(26 flights)
On-time trend by month
66%
May

Jun 70% → May 66% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202570%30
July 202561%31
August 202570%30
September 202572%29
October 202584%31
November 202579%28
December 202556%32
January 202660%25
February 202676%45
March 202671%35
April 202683%60
May 202666%56
Departures on time
81%
Diverted
0.7%
Flights flown
432
Months covered
12

Keep nerding

Based on 438 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.