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Flight Reliability

UA 1415 · United Airlines

Denver → Sacramento (DEN–SMF)87% of its flights flew this route. The rest (STL–DEN, TUL–DEN) are included in these numbers.

93
Nerd Approved
WanderNerd Reliability Score
86%
Arrive within 15 minutes
2 min
Average arrival delay
0.2%
Cancelled
6 min early
Median arrival delay

Based on 414 historical flights. Data through May 2026.

What the data says

Mornings have a slight edge.

Departures between 6–9 AM arrived on time 90% of the time, against 85% between 9 AM–12 PM.

Friday is doing you no favors.

UA 1415 arrived on time 92% of the time on Mondays. On Fridays: 78%.

Better than the DEN–SMF route average.

UA 1415 arrived on time 86% of the time, versus 74% across the DEN–SMF route.

A bit ahead of the United Airlines network.

UA 1415 arrived on time 86% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon92%(59 flights)
  • Tue87%(61 flights)
  • Wed85%(61 flights)
  • Thu84%(57 flights)
  • Fri78%(58 flights)
  • Sat81%(58 flights)
  • Sun92%(59 flights)
On-time by departure window
  • 6–9 AM90%(31 flights)
  • 9 AM–12 PM85%(382 flights)
On-time trend by month
87%
May

Jun 97% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202597%30
July 202571%31
August 202594%31
September 202587%53
October 202594%31
November 202590%30
December 202574%31
January 202681%31
February 202679%28
March 202681%32
April 202689%54
May 202687%31
Departures on time
87%
Diverted
0%
Flights flown
413
Months covered
12

Same route, other flights

Keep nerding

Based on 414 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.