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Route Reliability

Denver → Atlanta

DEN–ATL · 1,199 miles · Denver International Airport to Hartsfield–Jackson Atlanta International Airport

83
Pretty Reliable
WanderNerd Reliability Score
80%
Arrive within 15 minutes
4 min
Average arrival delay
0.9%
Cancelled
5,586
Flights in the data

Data through May 2026.

Who flies it best

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

  1. 1.Delta Air Lines86%2,802 flights
  2. 2.Frontier Airlines80%710 flights
  3. 3.United Airlines78%992 flights
  4. 4.Southwest Airlines68%1,082 flights

What the data says

Morning-you made the right choice.

DEN–ATL flights departing between 3–6 AM arrived on time 94% of the time, versus 52% between 6–9 PM.

Wednesday has been the better bet.

A small edge: 84% on time on Wednesdays against 77% on Sundays.

Delta Air Lines has a clear lead on this route.

Delta Air Lines arrived on time 86% of the time on this route; Southwest Airlines managed 68%.

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
  • Mon81%(820 flights)
  • Tue82%(802 flights)
  • Wed84%(769 flights)
  • Thu79%(785 flights)
  • Fri80%(804 flights)
  • Sat80%(732 flights)
  • Sun77%(801 flights)
On-time by departure window
  • 12–3 AM87%(481 flights)
  • 3–6 AM94%(157 flights)
  • 6–9 AM90%(758 flights)
  • 9 AM–12 PM83%(1273 flights)
  • 12–3 PM82%(1403 flights)
  • 3–6 PM70%(1172 flights)
  • 6–9 PM52%(185 flights)
  • 9 PM–12 AM68%(84 flights)
On-time trend by month
76%
May

Jun 69% → May 76% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202569%496
July 202571%516
August 202578%490
September 202585%450
October 202585%472
November 202591%441
December 202575%453
January 202684%423
February 202686%411
March 202678%444
April 202688%441
May 202676%476

Keep nerding

Based on 5,586 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.