Busiest Day of Flying recorded by FlightRadar24 on 13th of July 2018 with a total traffic of 205,468 individual flight.
At peak time, there was 19,000 planes airborne at the same time!
Notice how some routes are more popular than others, can you find the planes using the polar routes?
If you want to avoid busy airports, the least traffic you are going to see is on Christmas Day with about half the traffic you will face on busy summer week ends!
Video by @flightradar24 - 10 minutes ago