Skip to content
WanderNerd
Check a flight

Flight Reliability

UA 512 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 512 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

91%
Arrive within 15 minutes
5 min early
Average arrival delay
1.0%
Cancelled
11 min early
Median arrival delay

Based on 593 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon87%(86 flights)
  • Tue92%(86 flights)
  • Wed93%(83 flights)
  • Thu89%(82 flights)
  • Fri95%(82 flights)
  • Sat87%(83 flights)
  • Sun95%(85 flights)
On-time by departure window
  • 12–3 AM91%(271 flights)
  • 6–9 AM93%(292 flights)
  • 9 AM–12 PM—(1 flights)
  • 12–3 PM78%(23 flights)
On-time trend by month
90%
May

Jun 86% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202586%83
July 202585%61
August 202587%47
September 202597%30
October 202592%36
November 202595%57
December 202589%62
January 202695%60
February 202698%55
March 202694%35
April 202693%30
May 202690%31
Departures on time
87%
Diverted
0%
Flights flown
587
Months covered
12

Keep nerding

Based on 593 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.