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Flight Reliability

UA 1431 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1431 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

85%
Arrive within 15 minutes
3 min
Average arrival delay
0.2%
Cancelled
11 min early
Median arrival delay

Based on 413 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon89%(63 flights)
  • Tue75%(56 flights)
  • Wed91%(58 flights)
  • Thu88%(59 flights)
  • Fri79%(58 flights)
  • Sat91%(58 flights)
  • Sun80%(60 flights)
On-time by departure window
  • 6–9 AM88%(64 flights)
  • 9 AM–12 PM97%(31 flights)
  • 12–3 PM85%(296 flights)
  • 6–9 PM62%(21 flights)
On-time trend by month
92%
May

Jun 86% → May 92% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202586%55
July 202581%31
August 202574%31
September 202583%30
October 202594%31
November 202593%29
December 202571%31
February 202676%37
March 202694%35
April 202694%31
May 202692%62
Departures on time
79%
Diverted
0%
Flights flown
412
Months covered
12

Keep nerding

Based on 413 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.