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Flight Reliability

UA 1665 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1665 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
4 min
Average arrival delay
1.0%
Cancelled
6 min early
Median arrival delay

Based on 618 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon77%(88 flights)
  • Tue83%(75 flights)
  • Wed76%(84 flights)
  • Thu79%(91 flights)
  • Fri79%(93 flights)
  • Sat82%(88 flights)
  • Sun73%(93 flights)
On-time by departure window
  • 3–6 PM91%(68 flights)
  • 6–9 PM63%(205 flights)
  • 9 PM–12 AM85%(339 flights)
On-time trend by month
62%
May

Jun 73% → May 62% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202573%60
July 202581%62
August 202585%61
September 202590%60
October 202588%56
November 202577%30
December 202574%39
January 202675%40
February 202684%43
March 202683%59
April 202662%52
May 202662%50
Departures on time
79%
Diverted
0%
Flights flown
612
Months covered
12

Keep nerding

Based on 618 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.