Delta Air Lines ORD to ATL on-time performance
Delta Air Lines nonstop flights from Chicago to Atlanta · Aug 2025 – Jul 2026
On-time arrivals
81%
arrived < 15 min late
Cancelled
2.5%
65 flights
Avg arrival delay
17 min
84 min when late
Rank on route
#1 of 9
route average 75% on time
Key facts
- Delta Air Lines flights on ORD to ATL arrived on time 81% of the time in Aug 2025 – Jul 2026.
- 2.5% were cancelled, and 7% arrived an hour or more late.
- That ranks #1 of 9 airlines on this route, which averaged 75% on time overall.
- The largest source of delay minutes was late-arriving aircraft (44%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft44%
- Airline (crew, maintenance, cleaning, fueling)31%
- Air traffic control & airport congestion20%
- Extreme weather5%
- Security0%
Other airlines on ORD to ATL
- United Airlines75% on time · 18 min avg delay
- Frontier Airlines68% on time · 34 min avg delay
- American Airlines65% on time · 32 min avg delay
- Envoy Air78% on time · 15 min avg delay
- Republic Airways70% on time · 20 min avg delay
- Spirit Airlines76% on time · 33 min avg delay
- SkyWest Airlines62% on time · 36 min avg delay
- PSA Airlines80% on time · 12 min avg delay
Full ORD to ATL comparison →
Delta Air Lines on-time record across all routes →
2,628 Delta Air Lines flights tracked on this route; 65 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.