Airports › Miami (MIA) › December 2025
Airport month · December 2025
Miami 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 10,099 domestic departures from Miami International (MIA). 73.6% left less than 15 minutes late and 74.1% reached their destination on time; 1.1% were cancelled.
Nationally that month, 72.0% of flights departed on time and 71.9% arrived on time, so MIA departures were 1.6 points above the national departure figure.
A year earlier, in December 2024, the airport had 9,937 departures with 73.6% leaving on time: a change of 0.0 points, with flights up 2%.
Flights arriving at MIA that month were on time 74.4% of the time (10,122 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 42%, air carrier 37% and national aviation system 19%.
- On time 74.1%
- Arrived 15+ minutes late 24.4%
- Cancelled 1.1%
- Diverted 0.3%
December 2025 against a year earlier, the airport's year and the nation
| Measure | Dec 2025 | Dec 2024 | MIA, 12 months to Jul 2026 | All reported flights, Dec 2025 |
|---|---|---|---|---|
| Departed on time | 73.6% | 73.6% | 72.9% | 72.0% |
| Arrived on time | 74.1% | 73.7% | 72.3% | 71.9% |
| Cancelled | 1.1% | 0.5% | 1.6% | 1.5% |
| Average departure delay (late minutes only) | 17.9 min | 18.3 min | 19.7 min | 21.2 min |
| Scheduled departures a day | 337 | 331 | 305 | 19,410 |
| Scheduled departures | 10,099 | 9,937 | 111,186 | 582,304 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| AA American Airlines | 5,490 | 54% | 76.1% | 6.5 min | 0.3% |
| MQ Envoy Air | 1,512 | 15% | 82.1% | 0.7 min | 0.9% |
| DL Delta Air Lines | 1,068 | 11% | 64.6% | 22.4 min | 3.7% |
| UA United Airlines | 659 | 7% | 75.7% | 8.7 min | 0.3% |
| WN Southwest Airlines | 441 | 4% | 65.1% | 13.6 min | 1.1% |
| F9 Frontier Airlines | 392 | 4% | 66.6% | 16.4 min | 4.8% |
| NK Spirit Airlines | 363 | 4% | 58.1% | 24.9 min | 5.5% |
| YX Republic Airline | 97 | 1% | 63.9% | 22.2 min | 1.0% |
| AS Alaska Airlines | 77 | 1% | 67.5% | 7.6 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| MIA–ATL | Miami to Atlanta | 584 | 74.1% | 9.9 min | 2.4% |
| MIA–LGA | Miami to New York | 532 | 63.3% | 17.7 min | 3.9% |
| MIA–DFW | Miami to Dallas/Fort Worth | 401 | 80.0% | 2.8 min | 0.7% |
| MIA–EWR | Miami to Newark | 393 | 66.9% | 16.2 min | 2.3% |
| MIA–JFK | Miami to New York | 392 | 63.0% | 19.4 min | 3.6% |
| MIA–ORD | Miami to Chicago | 383 | 73.1% | 8.4 min | 1.3% |
| MIA–CLT | Miami to Charlotte | 353 | 77.9% | 5.1 min | 0.6% |
| MIA–DCA | Miami to Washington | 344 | 76.2% | 8.1 min | 0.3% |
| MIA–IAH | Miami to Houston | 340 | 81.8% | -2.2 min | 0.0% |
| MIA–MCO | Miami to Orlando | 331 | 80.1% | 7.2 min | 0.3% |
| MIA–TPA | Miami to Tampa | 298 | 75.2% | 13.9 min | 0.3% |
| MIA–LAX | Miami to Los Angeles | 286 | 74.8% | 1.2 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left MIA on time in December 2025?
73.6% of 10,099 scheduled domestic departures left less than 15 minutes late, and 74.1% 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, 73.6% of 9,937 departures left on time and 0.5% were cancelled, against 73.6% and 1.1% 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 MIA · methodology · corrections.