London Heathrow logged 3,803 flights across three days from May 31 to June 2, 2026, averaging just under 53 movements per hour and roughly 1,268 flights per day. Arrivals and departures split almost evenly, with 1,896 arrivals and 1,907 departures recorded across the window. June 1 was the busiest single day at 1,298 total movements. The hour from 11:00 to 12:00 BST carried the heaviest load, with 268 flights: 128 arrivals and 140 departures. Early morning traffic skewed heavily toward arrivals, with hours 3 through 6 showing almost no departures. The 22:00 hour reversed that balance sharply, recording 152 departures against only 40 arrivals. Dublin was the top paired airport at 101 combined movements over the three days, followed by Amsterdam at 86 and Paris CDG at 73. Geneva, Munich, Madrid, Frankfurt, Barcelona, Lisbon, and Rome each accounted for 58 to 69 movements. Approach tracks came predominantly from the ESE, E, and SE quadrants, while departure tracks spread more evenly, with ESE, E, NW, and WNW each drawing over 200 movements. The 873 unique aircraft observed carried registrations from more than 40 countries, with UK-registered aircraft accounting for 263, US-registered for 121, and German-registered for 51. Altitude data across the capture window peaked at 44,225 feet, recorded on an arrival by G-ZBJK. Average groundspeed across all tracked legs was 329 knots, with a maximum of 697.6 knots. The longest tracked departure covered 3,178 nautical miles to Abu Dhabi Zayed International in 7 hours and 3 minutes. Average leg distance was 735.7 nautical miles, with an average duration of just under 125 minutes. The dataset captured 3.75 million ADS-B position points in total.