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Flight Reliability

UA 1208 · United Airlines

Denver → Sacramento (DEN–SMF)91% of its flights flew this route. The rest (MCI–DEN) are included in these numbers.

87
Pretty Reliable
WanderNerd Reliability Score
82%
Arrive within 15 minutes
2 min
Average arrival delay
0.5%
Cancelled
9 min early
Median arrival delay

Based on 400 historical flights. Data through May 2026.

What the data says

The 12–3 PM departure wins.

UA 1208 departing between 12–3 PM arrived on time 94% of the time, versus 81% between 3–6 PM.

Monday is the weak spot.

UA 1208 arrived on time 88% of the time on Tuesdays. On Mondays: 78%.

Better than the DEN–SMF route average.

UA 1208 arrived on time 82% of the time, versus 74% across the DEN–SMF route.

A bit ahead of the United Airlines network.

UA 1208 arrived on time 82% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon78%(58 flights)
  • Tue88%(57 flights)
  • Wed84%(57 flights)
  • Thu82%(54 flights)
  • Fri79%(56 flights)
  • Sat84%(57 flights)
  • Sun83%(58 flights)
On-time by departure window
  • 12–3 PM94%(36 flights)
  • 3–6 PM81%(361 flights)
On-time trend by month
94%
May

Jun 63% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202563%30
July 202561%31
August 202583%30
September 202580%30
October 202587%37
November 202598%56
December 202572%32
January 202694%31
February 202682%28
March 202681%31
April 202680%30
May 202694%31
Departures on time
82%
Diverted
0.3%
Flights flown
397
Months covered
12

Same route, other flights

Keep nerding

Based on 400 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.