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Flight Reliability

UA 1671 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1671 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

76%
Arrive within 15 minutes
7 min
Average arrival delay
0.7%
Cancelled
6 min early
Median arrival delay

Based on 401 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon74%(57 flights)
  • Tue80%(59 flights)
  • Wed85%(58 flights)
  • Thu73%(56 flights)
  • Fri77%(56 flights)
  • Sat73%(55 flights)
  • Sun73%(56 flights)
On-time by departure window
  • 6–9 AM95%(20 flights)
  • 12–3 PM79%(261 flights)
  • 3–6 PM76%(33 flights)
  • 6–9 PM62%(81 flights)
  • 9 PM–12 AM—(2 flights)
On-time trend by month
76%
May

Jun 93% → May 76% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%27
July 202573%30
August 202584%31
September 202583%30
October 202587%31
November 202579%28
December 202594%17
January 202659%51
February 202669%39
March 202669%54
April 202680%30
May 202676%29
Departures on time
79%
Diverted
0.2%
Flights flown
397
Months covered
12

Keep nerding

Based on 401 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.