Airports › Miami (MIA) › August 2025
Airport month · August 2025
Miami International in August 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 August 2025, reporting carriers scheduled 8,731 domestic departures from Miami International (MIA). 68.0% left less than 15 minutes late and 66.8% reached their destination on time; 0.9% were cancelled.
Nationally that month, 76.8% of flights departed on time and 76.3% arrived on time, so MIA departures were 8.8 points below the national departure figure.
A year earlier, in August 2024, the airport had 8,459 departures with 60.1% leaving on time: a change of +7.9 points, with flights up 3%.
Flights arriving at MIA that month were on time 71.2% of the time (8,725 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 44%, air carrier 30% and national aviation system 20%.
- On time 66.8%
- Arrived 15+ minutes late 32.0%
- Cancelled 0.9%
- Diverted 0.3%
August 2025 against a year earlier, the airport's year and the nation
| Measure | Aug 2025 | Aug 2024 | MIA, 12 months to Jul 2026 | All reported flights, Aug 2025 |
|---|---|---|---|---|
| Departed on time | 68.0% | 60.1% | 72.9% | 76.8% |
| Arrived on time | 66.8% | 59.8% | 72.3% | 76.3% |
| Cancelled | 0.9% | 4.1% | 1.6% | 1.1% |
| Average departure delay (late minutes only) | 25.4 min | 32.6 min | 19.7 min | 17.6 min |
| Scheduled departures a day | 291 | 282 | 305 | 20,079 |
| Scheduled departures | 8,731 | 8,459 | 111,186 | 602,378 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| AA American Airlines | 5,121 | 59% | 63.5% | 21.6 min | 0.9% |
| MQ Envoy Air | 960 | 11% | 77.2% | 4.0 min | 0.0% |
| DL Delta Air Lines | 877 | 10% | 71.0% | 15.7 min | 1.4% |
| UA United Airlines | 470 | 5% | 68.5% | 18.4 min | 0.6% |
| WN Southwest Airlines | 391 | 4% | 69.8% | 17.7 min | 0.0% |
| NK Spirit Airlines | 381 | 4% | 67.5% | 17.5 min | 1.0% |
| F9 Frontier Airlines | 335 | 4% | 71.0% | 19.0 min | 2.4% |
| YX Republic Airline | 134 | 2% | 67.2% | 22.4 min | 0.0% |
| AS Alaska Airlines | 31 | 0% | 41.9% | 23.3 min | 3.2% |
| B6 JetBlue Airways | 31 | 0% | 80.6% | -9.6 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| MIA–ATL | Miami to Atlanta | 499 | 63.3% | 23.2 min | 1.0% |
| MIA–LGA | Miami to New York | 495 | 69.1% | 16.2 min | 1.4% |
| MIA–DFW | Miami to Dallas/Fort Worth | 418 | 60.5% | 21.9 min | 3.1% |
| MIA–JFK | Miami to New York | 376 | 68.6% | 19.1 min | 1.3% |
| MIA–MCO | Miami to Orlando | 357 | 61.9% | 22.6 min | 0.6% |
| MIA–DCA | Miami to Washington | 336 | 72.9% | 10.6 min | 0.6% |
| MIA–ORD | Miami to Chicago | 333 | 61.6% | 19.8 min | 1.8% |
| MIA–EWR | Miami to Newark | 305 | 68.5% | 18.0 min | 0.7% |
| MIA–IAH | Miami to Houston | 300 | 66.3% | 19.0 min | 1.0% |
| MIA–CLT | Miami to Charlotte | 293 | 73.4% | 13.3 min | 1.4% |
| MIA–BOS | Miami to Boston | 287 | 69.7% | 14.7 min | 0.7% |
| MIA–PHL | Miami to Philadelphia | 268 | 74.6% | 19.3 min | 0.4% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left MIA on time in August 2025?
68.0% of 8,731 scheduled domestic departures left less than 15 minutes late, and 66.8% reached their destination on time. The national figures that month were 76.8% and 76.3%.
How does that compare with a year earlier?
In August 2024, 60.1% of 8,459 departures left on time and 4.1% were cancelled, against 68.0% and 0.9% in August 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for August 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.