Airlines › Delta Air Lines › December 2024
Carrier month · December 2024
Delta Air Lines in December 2024
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 2024, Delta Air Lines (DL) reported 83,283 scheduled domestic flights. 80.1% arrived on time, 0.1% were cancelled and 0.2% diverted.
All reporting carriers together recorded 78.1% on time and 0.7% cancelled that month, so the carrier was 2.0 points above the combined figure.
A year earlier, in December 2023, it reported 81,022 flights with 90.2% on time: a change of −10.1 points.
Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 46%, late-arriving aircraft 31% and national aviation system 18%.
- On time 80.1%
- Arrived 15+ minutes late 19.6%
- Cancelled 0.1%
- Diverted 0.2%
December 2024 against a year earlier, the carrier's year and all carriers
| Measure | Dec 2024 | Dec 2023 | DL, 12 months to Jul 2026 | All carriers, Dec 2024 |
|---|---|---|---|---|
| Arrived on time | 80.1% | 90.2% | 79.9% | 78.1% |
| Departed on time | 80.0% | 89.2% | 80.6% | 77.8% |
| Cancelled | 0.1% | 0.0% | 1.7% | 0.7% |
| Average arrival delay | 4.3 min | -6.4 min | 3.9 min | 7.1 min |
| Scheduled flights a day | 2,776 | 2,701 | 2,846 | 19,686 |
| Scheduled flights | 83,283 | 81,022 | 1,038,644 | 590,581 |
146 airports and 915 routes had DL flights that month.
Busiest airports that month
| Airport | Departures | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|
| ATL Atlanta | 18,688 | 78.6% | 5.2 min | 0.0% |
| MSP Minneapolis | 5,380 | 77.8% | 4.3 min | 0.0% |
| DTW Detroit | 4,774 | 76.3% | 7.2 min | 0.1% |
| SLC Salt Lake City | 4,633 | 80.9% | 3.3 min | 0.0% |
| LAX Los Angeles | 3,046 | 83.5% | -0.1 min | 0.0% |
| SEA Seattle | 2,628 | 82.8% | 0.5 min | 0.0% |
| JFK New York | 2,574 | 78.7% | 2.3 min | 0.0% |
| LGA New York | 2,483 | 74.5% | 7.8 min | 0.1% |
| BOS Boston | 2,167 | 76.3% | 6.3 min | 0.7% |
| MCO Orlando | 1,936 | 78.6% | 7.7 min | 0.0% |
| LAS Las Vegas | 1,383 | 89.6% | -5.2 min | 0.0% |
| TPA Tampa | 1,145 | 78.1% | 6.3 min | 0.1% |
| FLL Fort Lauderdale | 1,133 | 75.1% | 9.9 min | 0.0% |
| MIA Miami | 1,029 | 72.7% | 11.2 min | 0.3% |
| SFO San Francisco | 1,028 | 83.5% | 1.3 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
What share of Delta Air Lines flights were on time in December 2024?
80.1% of 83,283 scheduled domestic flights arrived less than 15 minutes late; all reporting carriers together recorded 78.1% that month.
How does that compare with a year earlier?
In December 2023 the carrier reported 81,022 flights with 90.2% on time and 0.0% cancelled, against 80.1% and 0.1% in December 2024.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for December 2024; public domain. Domestic scheduled flights, totals and averages only. The site's data runs through July 2026. Full record for Delta Air Lines · methodology · corrections.