ORIGIN AIRPORT REPORT
ATL
Atlanta, GA (ATL) departure reliability
Of 316,342 scheduled reportable flights departing ATL, 76.9% arrived on time, 13.7% arrived at least 30 minutes late, and 1.7% were cancelled during July 2025–June 2026.
Source: U.S. Bureau of Transportation Statistics · Origin-airport cohort · Updated September 16, 2026
HISTORICAL ROUTE SIGNALGenerally reliable
76.9%arrived on time
13.7%30+ min late
1.7%cancelled
316,342scheduled flights
MOST-FLOWN DIRECTIONS
ALL ROUTES →Which route from ATL had the largest sample?
ATL to LGA was ATL's largest published route sample, with 8,344 scheduled flights and a 70.3% on-time rate during July 2025–June 2026.
ATL→LGAAtlanta, GA (ATL) to New York, NY (LGA)8,344 flights analyzedVariable70.3%on timeATL→MCOAtlanta, GA (ATL) to Orlando, FL (MCO)8,211 flights analyzedVariable69.5%on timeATL→FLLAtlanta, GA (ATL) to Fort Lauderdale, FL (FLL)7,189 flights analyzedVariable69.0%on timeATL→DCAAtlanta, GA (ATL) to Washington, DC (DCA)6,812 flights analyzedVariable67.5%on timeATL→DFWAtlanta, GA (ATL) to Dallas/Fort Worth, TX (DFW)6,698 flights analyzedVariable71.9%on timeATL→ORDAtlanta, GA (ATL) to Chicago, IL (ORD)6,406 flights analyzedVariable68.6%on timeATL→EWRAtlanta, GA (ATL) to Newark, NJ (EWR)6,285 flights analyzedVariable70.1%on timeATL→MIAAtlanta, GA (ATL) to Miami, FL (MIA)6,229 flights analyzedVariable69.8%on timeATL→TPAAtlanta, GA (ATL) to Tampa, FL (TPA)6,141 flights analyzedGenerally reliable72.3%on timeATL→PHLAtlanta, GA (ATL) to Philadelphia, PA (PHL)5,713 flights analyzedVariable72.7%on timeATL→DENAtlanta, GA (ATL) to Denver, CO (DEN)5,589 flights analyzedGenerally reliable76.4%on timeATL→BWIAtlanta, GA (ATL) to Baltimore, MD (BWI)5,414 flights analyzedGenerally reliable74.0%on timeATL→LAXAtlanta, GA (ATL) to Los Angeles, CA (LAX)5,021 flights analyzedGenerally reliable77.6%on timeATL→BOSAtlanta, GA (ATL) to Boston, MA (BOS)4,935 flights analyzedGenerally reliable73.0%on timeATL→IAHAtlanta, GA (ATL) to Houston, TX (IAH)4,914 flights analyzedGenerally reliable74.9%on time
Which airline was most reliable departing ATL?
Among qualifying ATL airline departure results, United Airlines had the highest on-time rate: 78.8% of 7,532 flights. Frontier Airlines was lowest at 63.0% across 19,734 flights.
| Airline | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Delta Air Lines | 240,801 | 78.5% | 12.3% | 1.6% |
| Frontier Airlines | 19,734 | 63.0% | 25.4% | 2.2% |
| Southwest Airlines | 17,795 | 75.9% | 13.8% | 1.1% |
| United Airlines | 7,532 | 78.8% | 13.3% | 1.5% |
| SkyWest Airlines | 7,222 | 72.7% | 18.1% | 2.3% |
| American Airlines | 6,810 | 74.6% | 15.7% | 2.1% |
| Spirit Airlines | 5,230 | 69.1% | 19.6% | 3.1% |
| PSA Airlines | 3,218 | 75.6% | 14.3% | 4.7% |
| Republic Airways | 2,880 | 73.5% | 14.8% | 4.2% |
| JetBlue Airways | 2,575 | 68.3% | 20.1% | 3.3% |
| Alaska Airlines | 1,433 | 76.3% | 12.8% | 0.8% |
| Envoy Air | 1,112 | 71.1% | 16.1% | 2.6% |
Origin report, not airport-wide operations.
These figures summarize the reported scheduled passenger flights in the dataset, not every flight or every airport process.