Delta Air Lines ATL to DEN on-time performance
Delta Air Lines nonstop flights from Atlanta to Denver · Aug 2025 – Jul 2026
On-time arrivals
79%
arrived < 15 min late
Cancelled
1.2%
34 flights
Avg arrival delay
12 min
51 min when late
Rank on route
#2 of 4
route average 78% on time
Key facts
- Delta Air Lines flights on ATL to DEN arrived on time 79% of the time in Aug 2025 – Jul 2026.
- 1.2% were cancelled, and 6% arrived an hour or more late.
- That ranks #2 of 4 airlines on this route, which averaged 78% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (43%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)43%
- Air traffic control & airport congestion33%
- Late-arriving aircraft20%
- Extreme weather3%
- Security0%
Other airlines on ATL to DEN
- Southwest Airlines73% on time · 16 min avg delay
- United Airlines86% on time · 12 min avg delay
- Frontier Airlines72% on time · 24 min avg delay
Full ATL to DEN comparison →
Delta Air Lines on-time record across all routes →
2,810 Delta Air Lines flights tracked on this route; 34 cancelled, 8 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.