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Flight Reliability

UA 657 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 657 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

77%
Arrive within 15 minutes
9 min
Average arrival delay
2.7%
Cancelled
5 min early
Median arrival delay

Based on 368 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon87%(53 flights)
  • Tue85%(53 flights)
  • Wed85%(54 flights)
  • Thu64%(52 flights)
  • Fri76%(53 flights)
  • Sat69%(42 flights)
  • Sun69%(49 flights)
On-time by departure window
  • 3–6 AM—(1 flights)
  • 6–9 AM80%(76 flights)
  • 9 AM–12 PM—(9 flights)
  • 12–3 PM81%(62 flights)
  • 3–6 PM63%(41 flights)
  • 6–9 PM77%(135 flights)
  • 9 PM–12 AM75%(32 flights)
On-time trend by month
88%
May

Jun 92% → May 88% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202592%24
July 202559%29
August 202555%29
September 202569%29
October 202578%27
November 202582%22
December 202583%29
January 202687%30
February 202659%27
March 202676%29
April 202687%31
May 202688%50
Departures on time
80%
Diverted
0.5%
Flights flown
356
Months covered
12

Keep nerding

Based on 368 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.