Skip to content
WanderNerd
Check a flight

Flight Reliability

UA 5535 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 5535 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

83%
Arrive within 15 minutes
9 min
Average arrival delay
0.9%
Cancelled
7 min early
Median arrival delay

Based on 333 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon86%(51 flights)
  • Tue79%(42 flights)
  • Wed79%(43 flights)
  • Thu82%(51 flights)
  • Fri82%(51 flights)
  • Sat88%(41 flights)
  • Sun84%(50 flights)
On-time by departure window
  • 6–9 AM—(7 flights)
  • 9 AM–12 PM88%(50 flights)
  • 12–3 PM72%(46 flights)
  • 3–6 PM87%(196 flights)
  • 6–9 PM55%(11 flights)
  • 9 PM–12 AM74%(19 flights)
On-time trend by month
86%
May

Jun 87% → May 86% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%30
July 202577%30
August 202577%31
September 202593%27
October 2025100%31
November 202587%30
December 202581%31
January 202683%18
February 202653%15
March 202671%28
April 202686%29
May 202686%29
Departures on time
87%
Diverted
0.3%
Flights flown
329
Months covered
12

Keep nerding

Based on 333 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.