BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
DEN→ATL

Denver, CO (DEN) to Atlanta, GA (ATL) flight delay odds

79.1% of 5,596 official scheduled DEN-to-ATL flights arrived on time; 12.7% arrived at least 30 minutes late and 0.9% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
79.1%arrived on time
12.7%30+ min late
0.9%cancelled
5,596scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.1%all scheduled flights
120+ minutes late2.3%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival+3.5 mincompleted flights

Which departure time was most reliable for DEN to ATL?

Among qualifying DEN-to-ATL departure window results, Early morning had the highest on-time rate: 90.5% of 945 flights. Evening was lowest at 59.7% across 670 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning94590.5%5.0%1.1%
Late morning1,32980.4%11.0%0.4%
Afternoon2,09878.8%12.7%1.0%
Evening67059.7%28.1%0.3%
Night55480.9%11.2%1.6%

Which weekday was most reliable for DEN to ATL?

Among qualifying DEN-to-ATL weekday results, Wednesday had the highest on-time rate: 83.3% of 779 flights. Sunday was lowest at 75.2% across 797 flights.

DayFlightsOn time30+ minCancelled
Monday82378.3%12.5%0.5%
Tuesday83083.0%10.8%0.6%
Wednesday77983.3%9.5%0.3%
Thursday79176.7%14.3%0.3%
Friday82378.4%14.1%1.1%
Saturday75378.6%12.4%2.1%
Sunday79775.2%15.1%1.3%

Which airline was most reliable for DEN to ATL?

Among qualifying DEN-to-ATL airline results, Delta Air Lines had the highest on-time rate: 85.2% of 2,805 flights. Southwest Airlines was lowest at 65.5% across 1,080 flights.

AirlineFlightsOn time30+ minCancelled
Delta Air Lines2,80585.2%8.5%1.1%
Southwest Airlines1,08065.5%20.3%0.8%
United Airlines96777.4%16.0%0.3%
Frontier Airlines74478.1%13.0%0.8%

Which month was most reliable for DEN to ATL?

Among qualifying DEN-to-ATL month results, November 2025 had the highest on-time rate: 88.7% of 450 flights. July 2025 was lowest at 69.1% across 525 flights.

MonthFlightsOn time30+ minCancelled
July 202552569.1%21.3%0.8%
August 202549577.2%13.5%0.8%
September 202545084.9%7.6%0.0%
October 202547483.5%8.0%0.0%
November 202545088.7%7.3%1.6%
December 202545973.2%17.0%1.1%
January 202643181.4%9.5%1.9%
February 202641285.2%8.3%0.2%
March 202646075.2%12.8%2.8%
April 202644287.8%8.4%0.2%
May 202648273.9%16.6%0.8%
June 202651672.7%18.6%0.2%

What drove DEN to ATL delay minutes?

Late aircraft was the largest recorded DEN-to-ATL delay category, accounting for 41.1% of 68,821 BTS-attributed delay minutes during July 2025–June 2026.

Airline41.0%
Late aircraft41.1%
National airspace14.4%
Weather3.2%
Security0.3%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.