This dataset covers ADS-B traffic at Miami International Airport (MIA/KMIA) across two days, December 20 and 21, 2025, captured on the 80th anniversary of the airport's renaming. Across the window, 51 total flights were recorded involving 48 unique aircraft, split between 29 arrivals and 22 departures, plus 4 ground operations. December 21 was considerably busier, accounting for 37 of those 51 flights compared to just 14 on the 20th. The busiest single hour was 02:00 EST, which logged 7 flights, all arrivals. A second cluster of activity appeared in the early morning hours from 01:00 through 06:00, heavily weighted toward arrivals, while departures were more spread across the afternoon and evening hours from 07:00 onward. Approach traffic came most frequently from the SSE (7 flights) and WNW (6 flights), with NNW and ESE each contributing smaller shares. Departures scattered more broadly, with NNE and NW each seeing 4 outbound flights. The top route by total movements was Los Angeles (LAX) with 3 flights, followed by Atlanta (ATL) with 2. All other identified routes recorded a single flight. The longest flight in the dataset was an arrival from Seattle-Tacoma (SEA) covering 2,401 nautical miles in just over 5 hours. The shortest was an 8-minute departure to Miami Executive Airport (TMB), 25 nautical miles away. Altitude data spans from ground level up to a peak of 42,925 feet, reached by tail number N127QS on a departure to Monmouth Executive Airport (BLM). The average observed altitude across all ADS-B points was 21,885 feet. The 34,000 to 35,000 foot band was the most densely sampled, logging 2,806 position points, followed by the 36,000 to 37,000 foot range at 1,959 points. Average groundspeed across the dataset was 354 knots, with a maximum of 617.8 knots recorded. Total distance across all flights was 42,307.8 nautical miles. Of the 48 aircraft with identifiable registrations, 43 were US-registered.