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Flight Reliability

UA 4450 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 4450 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

58%
Arrive within 15 minutes
52 min
Average arrival delay
7.1%
Cancelled
7 min
Median arrival delay

Based on 350 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon58%(45 flights)
  • Tue58%(48 flights)
  • Wed54%(46 flights)
  • Thu53%(45 flights)
  • Fri55%(47 flights)
  • Sat64%(44 flights)
  • Sun60%(48 flights)
On-time by departure window
  • 6–9 AM—(1 flights)
  • 12–3 PM57%(161 flights)
  • 3–6 PM57%(157 flights)
  • 6–9 PM—(4 flights)
On-time trend by month
62%
May

Jun 47% → May 62% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202547%15
July 202539%26
August 202562%29
September 202562%29
October 202552%31
November 202565%26
December 202557%30
January 202675%28
February 202667%24
March 202670%30
April 202627%26
May 202662%29
Departures on time
64%
Diverted
0.6%
Flights flown
323
Months covered
12

Keep nerding

Based on 350 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.