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Flight Reliability

UA 353 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 353 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

71%
Arrive within 15 minutes
13 min
Average arrival delay
2.0%
Cancelled
2 min early
Median arrival delay

Based on 588 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon75%(81 flights)
  • Tue74%(80 flights)
  • Wed70%(79 flights)
  • Thu69%(84 flights)
  • Fri73%(86 flights)
  • Sat68%(82 flights)
  • Sun65%(83 flights)
On-time by departure window
  • 9 AM–12 PM—(6 flights)
  • 12–3 PM67%(119 flights)
  • 3–6 PM73%(44 flights)
  • 6–9 PM66%(324 flights)
  • 9 PM–12 AM90%(82 flights)
On-time trend by month
84%
May

Jun 53% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202553%30
July 202536%28
August 202565%31
September 202560%30
October 202565%43
November 202563%30
December 202567%58
January 202667%52
February 202679%48
March 202667%64
April 202690%88
May 202684%73
Departures on time
72%
Diverted
0.2%
Flights flown
575
Months covered
12

Keep nerding

Based on 588 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.