Can you name the 50 busiest airports in Europe by number of passengers in 2020?
Only one airport per city will be counted. Therefor, the number counted is only the number of passengers of that airport, not all the airports in the city.
Some cities will be merged together as both of their airports are the same airport
At first I was convinced that those numbers of passengers are either per month, maybe only international travelers or just straight up wrong. Then I checked the year... yeah that's make sense.