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Route Reliability

Denver → Birmingham

DEN–BHM · 1,083 miles · Denver International Airport to Birmingham–Shuttlesworth International Airport

80
Pretty Reliable
WanderNerd Reliability Score
75%
Arrive within 15 minutes
8 min
Average arrival delay
0.5%
Cancelled
1,166
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.United Airlines80%728 flights
  2. 2.Southwest Airlines65%438 flights

What the data says

Morning-you made the right choice.

DEN–BHM flights departing between 9 AM–12 PM arrived on time 81% of the time, versus 54% between 6–9 PM.

Sunday has been the better bet.

A small edge: 78% on time on Sundays against 72% on Thursdays.

United Airlines has a clear lead on this route.

United Airlines arrived on time 80% of the time on this route; Southwest Airlines managed 65%.

Slipping a little lately.

DEN–BHM flights arrived on time 75% of the time over the last three months in the data, compared with 80% in the three months before that.

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
  • Mon77%(167 flights)
  • Tue75%(168 flights)
  • Wed74%(168 flights)
  • Thu72%(165 flights)
  • Fri72%(166 flights)
  • Sat76%(155 flights)
  • Sun78%(170 flights)
On-time by departure window
  • 9 AM–12 PM81%(452 flights)
  • 12–3 PM65%(26 flights)
  • 3–6 PM77%(479 flights)
  • 6–9 PM54%(171 flights)
  • 9 PM–12 AM65%(31 flights)
On-time trend by month
70%
May

Jun 53% → May 70% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202553%89
July 202565%91
August 202570%92
September 202576%89
October 202581%93
November 202586%88
December 202574%93
January 202687%93
February 202680%84
March 202679%113
April 202677%116
May 202670%118

Keep nerding

Based on 1,166 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.