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Route Reliability

Denver → BIL

DEN–BIL · 455 miles · Denver International Airport to BIL Airport

83
Pretty Reliable
WanderNerd Reliability Score
80%
Arrive within 15 minutes
7 min
Average arrival delay
0.8%
Cancelled
1,786
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 80% of the time across 1,786 flights. No comparison to make.

What the data says

Morning-you made the right choice.

DEN–BIL flights departing between 6–9 AM arrived on time 89% of the time, versus 74% between 6–9 PM.

Sunday scaries are real for this one.

DEN–BIL flights arrived on time 83% of the time on Wednesdays. On Sundays: 75%.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon79%(253 flights)
  • Tue80%(247 flights)
  • Wed83%(252 flights)
  • Thu80%(252 flights)
  • Fri79%(252 flights)
  • Sat83%(245 flights)
  • Sun75%(262 flights)
On-time by departure window
  • 6–9 AM89%(357 flights)
  • 9 AM–12 PM79%(364 flights)
  • 12–3 PM76%(153 flights)
  • 3–6 PM78%(311 flights)
  • 6–9 PM74%(414 flights)
  • 9 PM–12 AM85%(164 flights)
On-time trend by month
85%
May

Jun 68% → May 85% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202568%177
July 202562%178
August 202571%180
September 202585%166
October 202593%155
November 202589%142
December 202581%120
January 202681%123
February 202684%110
March 202675%121
April 202691%128
May 202685%163

Keep nerding

Based on 1,786 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.