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Flight Reliability

UA 5351 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 5351 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

75%
Arrive within 15 minutes
7 min
Average arrival delay
1.5%
Cancelled
1 min early
Median arrival delay

Based on 325 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon78%(46 flights)
  • Tue85%(52 flights)
  • Wed77%(47 flights)
  • Thu72%(50 flights)
  • Fri65%(46 flights)
  • Sat92%(36 flights)
  • Sun57%(42 flights)
On-time by departure window
  • 9 AM–12 PM95%(39 flights)
  • 12–3 PM85%(13 flights)
  • 3–6 PM68%(81 flights)
  • 6–9 PM74%(99 flights)
  • 9 PM–12 AM72%(87 flights)
On-time trend by month
53%
May

Jun 63% → May 53% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202563%30
July 202557%30
August 202589%26
September 202578%23
October 202575%28
November 202579%28
December 202582%27
January 202684%19
February 2026100%21
March 202686%29
April 202668%28
May 202653%30
Departures on time
80%
Diverted
0.3%
Flights flown
319
Months covered
12

Keep nerding

Based on 325 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.