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Flight Reliability

UA 2039 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 2039 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

89%
Arrive within 15 minutes
4 min early
Average arrival delay
0.2%
Cancelled
14 min early
Median arrival delay

Based on 594 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon92%(87 flights)
  • Tue89%(84 flights)
  • Wed86%(77 flights)
  • Thu86%(87 flights)
  • Fri91%(87 flights)
  • Sat88%(84 flights)
  • Sun90%(87 flights)
On-time by departure window
  • 3–6 AM100%(11 flights)
  • 6–9 AM94%(429 flights)
  • 9 AM–12 PM89%(75 flights)
  • 3–6 PM56%(78 flights)
On-time trend by month
100%
May

Jun 87% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%60
July 202566%61
August 202584%80
September 202597%37
October 202595%56
November 2025100%30
December 202590%59
January 202685%33
February 202696%26
March 202689%54
April 202697%59
May 2026100%38
Departures on time
90%
Diverted
0%
Flights flown
593
Months covered
12

Keep nerding

Based on 594 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.