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Flight Reliability

UA 1547 · United Airlines

Denver → Kalispell (DEN–FCA)90% of its flights flew this route. The rest (BOI–ORD, CVG–ORD) are included in these numbers.

87
Pretty Reliable
WanderNerd Reliability Score
83%
Arrive within 15 minutes
4 min
Average arrival delay
0.6%
Cancelled
3 min early
Median arrival delay

Based on 341 historical flights. Data through May 2026.

What the data says

Wednesdays have been rough.

UA 1547 arrived on time 90% of the time on Mondays and just 72% on Wednesdays. That gap is worth planning around.

A bit ahead of the United Airlines network.

UA 1547 arrived on time 83% of the time, versus 79% across the United Airlines network.

Trending in the right direction.

UA 1547 arrived on time 85% of the time over the last three months in the data, compared with 73% in the three months before that.

The breakdown

On-time by weekday
  • Mon90%(49 flights)
  • Tue81%(48 flights)
  • Wed72%(46 flights)
  • Thu85%(47 flights)
  • Fri85%(48 flights)
  • Sat90%(49 flights)
  • Sun77%(51 flights)
On-time by departure window
  • 6–9 AM—(6 flights)
  • 9 AM–12 PM83%(306 flights)
  • 12–3 PM84%(25 flights)
  • 6–9 PM—(1 flights)
On-time trend by month
84%
May

Jun 80% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202580%30
July 202587%31
August 202587%31
September 202593%30
November 202587%30
December 202552%31
January 202676%29
February 202693%27
March 202678%32
April 202693%29
May 202684%31
Departures on time
86%
Diverted
0.3%
Flights flown
338
Months covered
12

Same route, other flights

Keep nerding

Based on 341 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.