Airports › Miami (MIA) › May 2025
Airport month · May 2025
Miami International in May 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 May 2025, reporting carriers scheduled 9,440 domestic departures from Miami International (MIA). 74.3% left less than 15 minutes late and 70.3% reached their destination on time; 0.9% were cancelled.
Nationally that month, 76.7% of flights departed on time and 75.4% arrived on time, so MIA departures were 2.4 points below the national departure figure.
A year earlier, in May 2024, the airport had 9,503 departures with 66.8% leaving on time: a change of +7.5 points, with flights down 1%.
Flights arriving at MIA that month were on time 75.7% of the time (9,440 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 37%, national aviation system 30% and air carrier 27%.
- On time 70.3%
- Arrived 15+ minutes late 28.4%
- Cancelled 0.9%
- Diverted 0.4%
May 2025 against a year earlier, the airport's year and the nation
| Measure | May 2025 | May 2024 | MIA, 12 months to Jul 2026 | All reported flights, May 2025 |
|---|---|---|---|---|
| Departed on time | 74.3% | 66.8% | 72.9% | 76.7% |
| Arrived on time | 70.3% | 64.8% | 72.3% | 75.4% |
| Cancelled | 0.9% | 1.0% | 1.6% | 1.0% |
| Average departure delay (late minutes only) | 19.7 min | 26.5 min | 19.7 min | 17.5 min |
| Scheduled departures a day | 315 | 317 | 305 | 20,188 |
| Scheduled departures | 9,440 | 9,503 | 111,186 | 605,648 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| AA American Airlines | 5,536 | 59% | 66.8% | 17.4 min | 1.0% |
| MQ Envoy Air | 1,039 | 11% | 81.5% | 3.8 min | 1.1% |
| DL Delta Air Lines | 946 | 10% | 75.4% | 13.1 min | 0.1% |
| UA United Airlines | 532 | 6% | 67.3% | 21.0 min | 0.9% |
| WN Southwest Airlines | 460 | 5% | 76.7% | 12.7 min | 0.4% |
| NK Spirit Airlines | 373 | 4% | 69.2% | 15.1 min | 1.9% |
| F9 Frontier Airlines | 313 | 3% | 74.4% | 14.8 min | 0.3% |
| B6 JetBlue Airways | 122 | 1% | 75.4% | 6.0 min | 0.0% |
| YX Republic Airline | 88 | 1% | 67.0% | 30.5 min | 0.0% |
| AS Alaska Airlines | 31 | 0% | 71.0% | 0.2 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| MIA–ATL | Miami to Atlanta | 537 | 70.6% | 11.5 min | 0.0% |
| MIA–LGA | Miami to New York | 491 | 67.8% | 21.3 min | 1.0% |
| MIA–JFK | Miami to New York | 462 | 70.6% | 16.3 min | 0.9% |
| MIA–DFW | Miami to Dallas/Fort Worth | 394 | 62.4% | 22.4 min | 1.3% |
| MIA–ORD | Miami to Chicago | 370 | 72.7% | 8.6 min | 1.1% |
| MIA–IAH | Miami to Houston | 348 | 64.7% | 20.8 min | 0.9% |
| MIA–BOS | Miami to Boston | 342 | 69.6% | 11.0 min | 1.2% |
| MIA–DCA | Miami to Washington | 339 | 69.9% | 9.6 min | 2.1% |
| MIA–MCO | Miami to Orlando | 314 | 62.1% | 33.6 min | 1.0% |
| MIA–CLT | Miami to Charlotte | 310 | 74.8% | 8.9 min | 1.3% |
| MIA–TPA | Miami to Tampa | 302 | 67.2% | 17.1 min | 2.0% |
| MIA–EWR | Miami to Newark | 288 | 47.2% | 46.5 min | 3.1% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left MIA on time in May 2025?
74.3% of 9,440 scheduled domestic departures left less than 15 minutes late, and 70.3% reached their destination on time. The national figures that month were 76.7% and 75.4%.
How does that compare with a year earlier?
In May 2024, 66.8% of 9,503 departures left on time and 1.0% were cancelled, against 74.3% and 0.9% in May 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for May 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.