Skip to content
WanderNerd
Check a flight

Flight Reliability

UA 1636 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1636 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

78%
Arrive within 15 minutes
8 min
Average arrival delay
1.5%
Cancelled
9 min early
Median arrival delay

Based on 477 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon74%(69 flights)
  • Tue82%(60 flights)
  • Wed80%(61 flights)
  • Thu76%(72 flights)
  • Fri83%(71 flights)
  • Sat79%(66 flights)
  • Sun71%(70 flights)
On-time by departure window
  • 6–9 AM86%(58 flights)
  • 12–3 PM76%(135 flights)
  • 3–6 PM72%(202 flights)
  • 6–9 PM93%(54 flights)
  • 9 PM–12 AM85%(20 flights)
On-time trend by month
93%
May

Jun 87% → May 93% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%30
July 202584%31
August 202555%31
September 202560%35
October 202590%58
November 202568%60
December 202572%58
January 202676%50
February 202686%28
March 202686%28
April 202687%30
May 202693%30
Departures on time
74%
Diverted
0.2%
Flights flown
469
Months covered
12

Keep nerding

Based on 477 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.