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Airport · 12 months to July 2026
Miami International: delays and on-time record
Miami, Florida
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. Data through July 2026; this is a monthly history, not live airport status.
Miami International (MIA) in Miami, Florida had 111,186 scheduled domestic departures by reporting carriers in the 12 months to July 2026, about 305 a day, on 97 routes.
72.9% of those flights left the gate less than 15 minutes late, 3.2 points below the national departure figure of 76.1%. Flights arriving at MIA were on time 75.9% of the time, level with the national arrival figure of 76.0%.
1.6% of scheduled departures were cancelled (national: 1.8%), and the average departure delay, counting early and on-time departures as zero, was 19.7 min.
American Airlines is the largest reporting carrier at MIA with 58% of departures. Among carriers with at least 1,112 departures, Envoy Air had the highest on-time arrival share for its MIA departures (81.6%) and Spirit Airlines the lowest (62.3%).
On-time departures are down 1.6 points on the previous 12 months (74.5%).
Of the delay minutes that carriers assigned to a BTS cause category for flights leaving MIA, late-arriving aircraft 40%, air carrier 32% and national aviation system 22%.
- On time 72.3%
- Arrived 15+ minutes late 25.7%
- Cancelled 1.6%
- Diverted 0.4%
As origin and as destination, against the nation
| Measure | Departures from MIA | Arrivals at MIA | All reported flights | MIA departures, previous 12 months |
|---|---|---|---|---|
| Departed on time (less than 15 min late) | 72.9% | 76.7% | 76.1% | 74.5% |
| Arrived on time | 72.3% | 75.9% | 76.0% | 73.6% |
| Cancelled | 1.6% | 1.6% | 1.8% | 1.5% |
| Diverted | 0.4% | 0.3% | 0.3% | 0.3% |
| Average departure delay (late minutes only) | 19.7 min | 18.8 min | 17.4 min | 19.3 min |
| Arrival delay minutes per 100 flights | 1,936 | 1,854 | 1,684 | 1,909 |
| Scheduled flights | 111,186 | 111,188 | 7,043,858 | 111,047 |
12 months to July 2026. The first column follows flights that left MIA; the second follows flights that landed there. Year on year, on-time departures moved −1.6 pts.
Airlines at MIA
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| AA American Airlines | 64,171 | 58% | 70.6% | 12.9 min | 1.5% |
| MQ Envoy Air | 14,139 | 13% | 81.6% | 0.5 min | 0.8% |
| DL Delta Air Lines | 11,640 | 10% | 72.6% | 12.0 min | 2.2% |
| UA United Airlines | 6,821 | 6% | 77.1% | 8.1 min | 1.0% |
| WN Southwest Airlines | 5,348 | 5% | 69.0% | 12.4 min | 1.1% |
| F9 Frontier Airlines | 4,324 | 4% | 72.1% | 11.8 min | 2.3% |
| NK Spirit Airlines | 3,184 | 3% | 62.3% | 19.8 min | 4.8% |
| YX Republic Airline | 991 | 1% | 68.6% | 18.4 min | 1.4% |
| AS Alaska Airlines | 533 | 0% | 69.6% | 6.9 min | 1.3% |
| B6 JetBlue Airways | 35 | 0% | 74.3% | -2.8 min | 0.0% |
Departures from MIA by reporting carrier, ordered by flights; on time means the flight reached its destination less than 15 minutes late. Green is at or above the airport's overall share of 72.3%. Carriers fly different routes at different hours, so the rows are not a like-for-like test.
Busiest routes from MIA
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| MIA–ATL | Miami to Atlanta | 6,261 | 72.3% | 13.6 min | 1.6% |
| MIA–LGA | Miami to New York | 5,990 | 64.5% | 18.8 min | 3.9% |
| MIA–DFW | Miami to Dallas/Fort Worth | 4,818 | 71.3% | 12.8 min | 2.6% |
| MIA–JFK | Miami to New York | 4,530 | 69.6% | 14.1 min | 2.8% |
| MIA–ORD | Miami to Chicago | 4,450 | 69.0% | 14.8 min | 2.0% |
| MIA–DCA | Miami to Washington | 3,956 | 73.6% | 9.2 min | 1.8% |
| MIA–EWR | Miami to Newark | 3,951 | 69.7% | 14.9 min | 2.7% |
| MIA–MCO | Miami to Orlando | 3,765 | 71.9% | 14.1 min | 0.9% |
| MIA–CLT | Miami to Charlotte | 3,722 | 77.2% | 6.8 min | 1.5% |
| MIA–IAH | Miami to Houston | 3,713 | 76.7% | 6.3 min | 1.2% |
| MIA–BOS | Miami to Boston | 3,381 | 68.2% | 14.8 min | 2.2% |
| MIA–LAX | Miami to Los Angeles | 3,250 | 74.6% | 6.7 min | 0.7% |
| MIA–PHL | Miami to Philadelphia | 3,249 | 73.3% | 11.3 min | 2.8% |
| MIA–TPA | Miami to Tampa | 2,937 | 70.3% | 17.1 min | 1.0% |
| MIA–SJU | Miami to San Juan | 2,638 | 74.8% | 11.4 min | 0.9% |
| MIA–BNA | Miami to Nashville | 2,536 | 69.5% | 13.9 min | 1.2% |
| MIA–DEN | Miami to Denver | 2,469 | 75.8% | 6.5 min | 0.5% |
| MIA–RDU | Miami to Raleigh/Durham | 2,356 | 69.4% | 15.1 min | 1.7% |
| MIA–BWI | Miami to Baltimore | 2,286 | 71.0% | 10.1 min | 2.0% |
| MIA–AUS | Miami to Austin | 2,192 | 71.0% | 12.4 min | 1.0% |
| MIA–PHX | Miami to Phoenix | 1,834 | 77.4% | 4.5 min | 0.8% |
| MIA–DTW | Miami to Detroit | 1,774 | 71.6% | 14.1 min | 1.4% |
| MIA–SFO | Miami to San Francisco | 1,746 | 69.4% | 10.9 min | 0.6% |
| MIA–MSY | Miami to New Orleans | 1,525 | 72.3% | 10.3 min | 1.1% |
| MIA–JAX | Miami to Jacksonville | 1,494 | 73.0% | 11.4 min | 0.7% |
| MIA–LAS | Miami to Las Vegas | 1,419 | 71.7% | 8.4 min | 0.8% |
| MIA–EYW | Miami to Key West | 1,250 | 85.5% | -1.7 min | 0.4% |
| MIA–SEA | Miami to Seattle | 1,212 | 65.7% | 14.9 min | 1.1% |
| MIA–PNS | Miami to Pensacola | 1,210 | 81.6% | 1.1 min | 0.8% |
| MIA–TLH | Miami to Tallahassee | 1,191 | 82.2% | 3.6 min | 0.3% |
| MIA–STL | Miami to St. Louis | 1,167 | 73.3% | 8.5 min | 0.7% |
| MIA–CMH | Miami to Columbus | 1,152 | 77.3% | 1.9 min | 0.4% |
| MIA–MSP | Miami to Minneapolis | 1,128 | 71.3% | 14.8 min | 0.9% |
| MIA–CHS | Miami to Charleston | 1,006 | 67.6% | 19.3 min | 1.2% |
| MIA–CVG | Miami to Cincinnati | 983 | 77.7% | 3.3 min | 0.9% |
| MIA–STT | Miami to Charlotte Amalie | 941 | 76.4% | 4.2 min | 0.7% |
| MIA–IND | Miami to Indianapolis | 934 | 71.3% | 11.2 min | 1.3% |
| MIA–CLE | Miami to Cleveland | 870 | 70.1% | 10.6 min | 1.0% |
| MIA–MCI | Miami to Kansas City | 844 | 71.4% | 9.2 min | 1.3% |
| MIA–SLC | Miami to Salt Lake City | 796 | 76.1% | 7.4 min | 0.6% |
| MIA–SAV | Miami to Savannah | 789 | 79.5% | 3.5 min | 1.5% |
| MIA–GSP | Miami to Greer | 727 | 78.7% | 1.0 min | 1.2% |
| MIA–PIT | Miami to Pittsburgh | 711 | 71.4% | 8.2 min | 1.7% |
| MIA–STX | Miami to Christiansted | 681 | 76.9% | 3.2 min | 0.4% |
| MIA–BHM | Miami to Birmingham | 650 | 82.5% | 0.7 min | 0.6% |
| MIA–SAN | Miami to San Diego | 649 | 74.1% | 2.7 min | 1.1% |
| MIA–ORF | Miami to Norfolk | 638 | 72.3% | 10.0 min | 1.1% |
| MIA–IAD | Miami to Washington | 625 | 82.4% | 1.1 min | 0.6% |
| MIA–RIC | Miami to Richmond | 586 | 68.9% | 18.3 min | 1.7% |
| MIA–MEM | Miami to Memphis | 559 | 60.1% | 23.4 min | 1.4% |
| MIA–GSO | Miami to Greensboro/High Point | 519 | 77.8% | 2.8 min | 2.1% |
| MIA–MDW | Miami to Chicago | 503 | 66.6% | 16.5 min | 1.6% |
| MIA–TYS | Miami to Knoxville | 487 | 76.2% | 4.7 min | 0.6% |
| MIA–SAT | Miami to San Antonio | 483 | 68.5% | 13.1 min | 0.8% |
| MIA–ILM | Miami to Wilmington | 456 | 76.8% | 4.0 min | 1.8% |
| MIA–SDF | Miami to Louisville | 430 | 64.4% | 20.8 min | 1.2% |
| MIA–BDL | Miami to Hartford | 428 | 69.9% | 8.0 min | 1.4% |
| MIA–DAL | Miami to Dallas | 419 | 68.3% | 11.2 min | 0.7% |
| MIA–GNV | Miami to Gainesville | 384 | 77.6% | 8.6 min | 0.0% |
| MIA–PDX | Miami to Portland | 341 | 72.1% | 12.0 min | 1.5% |
| MIA–SRQ | Miami to Sarasota/Bradenton | 333 | 84.7% | 4.3 min | 0.0% |
| MIA–XNA | Miami to Fayetteville | 293 | 80.2% | -1.5 min | 1.0% |
| MIA–HOU | Miami to Houston | 290 | 71.7% | 12.2 min | 0.7% |
| MIA–VPS | Miami to Valparaiso | 226 | 84.5% | 1.9 min | 0.0% |
| MIA–GRR | Miami to Grand Rapids | 225 | 65.8% | 16.2 min | 1.3% |
| MIA–AVL | Miami to Asheville | 222 | 73.4% | 7.3 min | 0.0% |
| MIA–OKC | Miami to Oklahoma City | 212 | 75.9% | 7.0 min | 0.5% |
| MIA–HPN | Miami to White Plains | 189 | 70.9% | 2.2 min | 3.2% |
| MIA–DSM | Miami to Des Moines | 180 | 73.3% | 0.8 min | 4.4% |
| MIA–OMA | Miami to Omaha | 176 | 67.6% | 7.0 min | 2.8% |
| MIA–MKE | Miami to Milwaukee | 132 | 65.9% | 13.5 min | 1.5% |
| MIA–EGE | Miami to Eagle | 126 | 62.7% | 10.0 min | 0.8% |
| MIA–TUL | Miami to Tulsa | 120 | 75.0% | 1.1 min | 0.8% |
The 73 busiest of 97 routes with reported flights. Routes with at least 10 flights a month have their own page.
Month by month
By scheduled departure hour
Among hours with at least 2,224 departures, 6 am to 7 am had the highest on-time share (90.3% of 5,463 flights) and 6 pm to 7 pm the lowest (63.3% of 6,510).
Delay causes
Cancellations by reported reason (1,756 in the period): air carrier 19%, weather 68%, national aviation system 13%, security 0%.
Checkpoint volumes
TSA publishes daily checkpoint passenger counts for the country as a whole, not for MIA on its own. The national series through September 2026 is on the checkpoint volumes page.
Questions and answers
How often do flights leave MIA on time?
72.9% of the 111,186 scheduled domestic departures in the 12 months to July 2026 left less than 15 minutes late; the national figure was 76.1%. 1.6% were cancelled.
How often do flights arrive at MIA on time?
75.9% of 111,188 scheduled arrivals were on time by the BTS definition, against 76.0% nationally.
Which airline has the highest on-time share at MIA?
Counting departures from MIA and whether they reached their destination on time, Envoy Air had the highest share (81.6% of 14,139 flights), then United Airlines (77.1%) and Delta Air Lines (72.6%). Carriers fly different routes at different hours, so the figures are not a like-for-like test.
What causes delays at MIA?
For departures from MIA that reached their destination 15 or more minutes late, carriers attributed the delay minutes as follows: late-arriving aircraft 40%, air carrier 32%, national aviation system 22%, extreme weather 6%, security 0%.
What time of day has the highest on-time share at MIA?
Departures scheduled from 6 am to 7 am local time left on time 90.3% of the time, the highest of any hour with enough flights to compare; 6 pm to 7 pm was lowest at 63.3%.
Is it getting better?
On-time departures for the 12 months to July 2026 were 72.9%, down 1.6 points on the previous 12 months (74.5%). The monthly chart shows each of the last 36 months, and each month has its own page.
Does this page show today's delays at MIA?
No. BTS publishes on-time records about two months after the month ends, so this page is a monthly history through July 2026. For live conditions use the FAA airport status service or your airline.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987 to present), monthly files August 2023 to July 2026; airport name from the BTS airport lookup table. US government works in the public domain. Domestic scheduled flights by reporting carriers only: international flights, charters and smaller carriers are not in the source. Totals and averages only; no individual flight or aircraft is identified. See the methodology; report processing errors through corrections.