According to PlainFlights' airport traffic ranking (BTS On-Time Performance total flights), Miami, FL (MIA) ranks #21 of 382 tracked US airports by total flights (most flights = #1). Miami, FL posts bottom-quartile on-time performance among the 382 tracked U.S. airports, as one of the busiest U.S. airports.
Compare MIA to another hub, filter routes, or browse airline stats without leaving this profile.
MIA on-time rate vs. the national average
Behind the U.S. average across all 382 tracked airports.
Delay Cause Breakdown
Top delay cause: Late Aircraft.
Total delay minutes: 9,945,580.
Late Aircraft37.5% (3,730,662 min)
Carrier35.8% (3,562,069 min)
NAS (National Aviation System)20.4% (2,031,633 min)
Weather5.9% (588,743 min)
Security0.3% (32,473 min)
MIA - seasonal on-time pattern
Best: October (91.4%) · worst: June (84.7%)
MIA - on-time rate by year
2020–2025, year-over-year trend.
MIA - taxi-out and taxi-in (monthly)
Average taxi-out 20.9 min · taxi-in 9.7 min over the last 24 reported months (U.S. airport mean taxi-out ≈ 16.4 min).
MIA's average taxi-out (20.9 min) runs longer than the recent U.S. airport mean (~16.4 min). The heaviest month in this window is March 2025 at 23.8 min; the lightest is October 2024 at 17.2 min.
Two PlainFlights-derived comparison paths for Miami, FL, both outside Florida so the neighborhoods are not same-state geography. Axes stay disjoint: volume peers exclude the on-time peer set. Same-state compare stays below.
The standout signal at Miami, FL is traffic scale: 1,160,127 BTS flights (2020–2025) place it #21 of 382 by book size. That busy-book footprint sits beside a 77.9% on-time rate (1.1 pts below the 79% national flight-weighted average), 256,336 delayed departures, and 11,802 cancellations (1.02% of the book).
Delay minutes concentrate in Late Aircraft (37.5% late-aircraft, 35.8% carrier, 20.4% NAS, 5.9% weather, 0.3% security). As a busy airport, that mix matters more for connection planning than for a thin schedule.
On the multi-year calendar, MIA is strongest in October (91.4% on-time) and weakest in June (84.7%), a 6.7-point swing. Volume peaks in March (~18,588 flights/month). The busiest connecting route is to ATL (Atlanta) at 76.7% on-time. Field definitions: on-time performance explained.
Miami, FL vs. the national on-time distribution
On-time rate among all 382 tracked U.S. airports
77.9%Top 92%higher than 8% of 382 airports
Miami, FL
60%95%
U.S. airports by on-time rate, bucketed by value
Each bar is a band; taller bars hold more airports. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data (2020–2025).
Statistics reflect cumulative performance across all available reporting periods. On-time rates exclude cancelled and diverted flights.
MIA's on-time book sits in the slower half of the BTS set; check the delay mix and the worst month before treating the headline as typical.
Check the busiest route from MIA before you book a connection. See top routes →
Travel in October rather than June if your dates are flexible. Seasonal patterns →
Build extra connection buffer when taxi-out spikes. March 2025 averaged 23.8 min. Taxi times →
On-time rate reflects the BTS historical average across all reporting carriers at this airport, not any single flight or airline.
Frequently Asked Questions
What is Miami, FL's on-time rate?
Miami, FL (MIA) has a 77.9% on-time rate across 1,160,127 BTS-tracked flights (2020-2025), 1.1 pts below the 79% national flight-weighted average; that places it in roughly the bottom-quartile on-time performance.
How does MIA rank among U.S. airports by traffic volume?
Miami, FL ranks #21 of 382 tracked US airports by total BTS flights (most flights = #1), making it one of the busiest U.S. airports.
What's the most common cause of delays at Miami, FL?
Late Aircraft is the leading delay cause at MIA, accounting for 37.5% of delay minutes. The full breakdown: 37.5% late-aircraft, 35.8% carrier, 20.4% NAS/air-traffic-control, 5.9% weather, and 0.3% security.
When is the best time to fly through Miami, FL?
October is historically MIA's strongest month at 91.4% on-time, while June is the weakest at 84.7%, a 6.7-point swing across the BTS historical record.
Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights