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Flight Reliability

UA 1027 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1027 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

70%
Arrive within 15 minutes
17 min
Average arrival delay
0.8%
Cancelled
1 min early
Median arrival delay

Based on 474 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon74%(74 flights)
  • Tue76%(53 flights)
  • Wed63%(65 flights)
  • Thu68%(72 flights)
  • Fri72%(75 flights)
  • Sat70%(57 flights)
  • Sun69%(72 flights)
On-time by departure window
  • 6–9 AM94%(98 flights)
  • 9 AM–12 PM84%(73 flights)
  • 12–3 PM62%(50 flights)
  • 3–6 PM48%(124 flights)
  • 6–9 PM70%(123 flights)
On-time trend by month
50%
May

Jun 69% → May 50% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202569%29
July 202575%83
August 202583%60
September 2025100%20
October 202570%20
November 202564%28
December 202559%29
January 202665%31
February 202682%28
March 202674%34
April 202663%56
May 202650%50
Departures on time
75%
Diverted
0.4%
Flights flown
468
Months covered
12

Keep nerding

Based on 474 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.