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Flight Reliability

UA 2177 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 2177 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

80%
Arrive within 15 minutes
4 min
Average arrival delay
0.4%
Cancelled
8 min early
Median arrival delay

Based on 560 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon75%(79 flights)
  • Tue83%(80 flights)
  • Wed84%(79 flights)
  • Thu79%(80 flights)
  • Fri79%(80 flights)
  • Sat84%(80 flights)
  • Sun79%(80 flights)
On-time by departure window
  • 6–9 AM94%(262 flights)
  • 9 AM–12 PM67%(218 flights)
  • 12–3 PM74%(53 flights)
  • 6–9 PM68%(25 flights)
On-time trend by month
74%
May

Jun 70% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202570%30
July 202577%31
August 202580%30
September 202590%30
October 202578%37
November 202573%60
December 202574%62
January 202690%60
February 202685%39
March 202691%58
April 202678%60
May 202674%61
Departures on time
84%
Diverted
0%
Flights flown
558
Months covered
12

Keep nerding

Based on 560 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.