Airports › Atlanta (ATL) › December 2025
Airport month · December 2025
Hartsfield-Jackson Atlanta International in December 2025
BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.
In December 2025, reporting carriers scheduled 25,764 domestic departures from Hartsfield-Jackson Atlanta International (ATL). 70.7% left less than 15 minutes late and 71.3% reached their destination on time; 2.4% were cancelled.
Nationally that month, 72.0% of flights departed on time and 71.9% arrived on time, so ATL departures were 1.3 points below the national departure figure.
A year earlier, in December 2024, the airport had 29,014 departures with 77.2% leaving on time: a change of −6.5 points, with flights down 11%.
Flights arriving at ATL that month were on time 76.3% of the time (25,781 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 43%, late-arriving aircraft 32% and national aviation system 16%.
- On time 71.3%
- Arrived 15+ minutes late 26.1%
- Cancelled 2.4%
- Diverted 0.2%
December 2025 against a year earlier, the airport's year and the nation
| Measure | Dec 2025 | Dec 2024 | ATL, 12 months to Jul 2026 | All reported flights, Dec 2025 |
|---|---|---|---|---|
| Departed on time | 70.7% | 77.2% | 77.1% | 72.0% |
| Arrived on time | 71.3% | 77.6% | 76.6% | 71.9% |
| Cancelled | 2.4% | 0.2% | 1.8% | 1.5% |
| Average departure delay (late minutes only) | 20.2 min | 14.6 min | 15.1 min | 21.2 min |
| Scheduled departures a day | 859 | 967 | 865 | 19,410 |
| Scheduled departures | 25,764 | 29,014 | 315,859 | 582,304 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| DL Delta Air Lines | 19,422 | 75% | 72.4% | 11.0 min | 2.5% |
| F9 Frontier Airlines | 1,613 | 6% | 53.7% | 33.8 min | 3.7% |
| WN Southwest Airlines | 1,585 | 6% | 75.6% | 7.7 min | 0.4% |
| OO SkyWest Airlines | 564 | 2% | 69.9% | 31.7 min | 1.1% |
| UA United Airlines | 523 | 2% | 75.7% | 12.6 min | 0.4% |
| AA American Airlines | 501 | 2% | 81.8% | 6.6 min | 0.2% |
| NK Spirit Airlines | 492 | 2% | 67.7% | 16.7 min | 2.4% |
| OH PSA Airlines | 274 | 1% | 66.4% | 29.5 min | 4.4% |
| B6 JetBlue Airways | 258 | 1% | 57.8% | 32.8 min | 3.9% |
| YX Republic Airline | 258 | 1% | 70.2% | 18.9 min | 4.7% |
| AS Alaska Airlines | 145 | 1% | 64.8% | 16.6 min | 0.0% |
| MQ Envoy Air | 129 | 1% | 72.1% | 14.2 min | 1.6% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| ATL–LGA | Atlanta to New York | 753 | 60.6% | 24.6 min | 5.7% |
| ATL–MCO | Atlanta to Orlando | 719 | 67.2% | 18.0 min | 1.9% |
| ATL–FLL | Atlanta to Fort Lauderdale | 687 | 63.5% | 20.2 min | 2.3% |
| ATL–MIA | Atlanta to Miami | 587 | 67.1% | 13.4 min | 2.2% |
| ATL–DFW | Atlanta to Dallas/Fort Worth | 574 | 72.5% | 11.3 min | 2.3% |
| ATL–DCA | Atlanta to Washington | 543 | 62.8% | 20.3 min | 3.7% |
| ATL–EWR | Atlanta to Newark | 522 | 58.6% | 27.6 min | 3.4% |
| ATL–TPA | Atlanta to Tampa | 504 | 68.3% | 15.5 min | 1.8% |
| ATL–ORD | Atlanta to Chicago | 487 | 58.7% | 29.4 min | 2.9% |
| ATL–PHL | Atlanta to Philadelphia | 460 | 64.8% | 21.7 min | 3.7% |
| ATL–DEN | Atlanta to Denver | 457 | 67.0% | 17.8 min | 1.8% |
| ATL–LAX | Atlanta to Los Angeles | 444 | 76.1% | 4.4 min | 0.9% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left ATL on time in December 2025?
70.7% of 25,764 scheduled domestic departures left less than 15 minutes late, and 71.3% reached their destination on time. The national figures that month were 72.0% and 71.9%.
How does that compare with a year earlier?
In December 2024, 77.2% of 29,014 departures left on time and 0.2% were cancelled, against 70.7% and 2.4% in December 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for December 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for ATL · methodology · corrections.