Flight delays by country
96 countries have enough graded routes for a page. They arrive here two different ways, and the difference matters enough to split the list.
Countries that publish their own record
Their regulator requires airlines to report every flight. These pages carry domestic routes and home airlines, graded.
UK Civil Aviation Authority
Published as monthly route totals
US Bureau of Transportation Statistics
Reported flight by flight
ANAC — Agência Nacional de Aviação Civil
Reported flight by flight
BITRE — Bureau of Infrastructure and Transport Research Economics
Published as monthly route totals
Countries covered from the other end
These publish nothing themselves. They are here because a regulator at the other end of the route does — Britain reports every flight between the UK and Spain, so Spanish airports carry real numbers even though Spain releases none. What you will not find on these pages is domestic flying inside the country.
Europe 39 countries
North America 15 countries
Asia 24 countries
South America 4 countries
Africa 10 countries
Why most of the world is missing
Four national regulators publish flight punctuality in a form anyone can use. Most do not: some never collect it, some release a PDF summary of a handful of airports, some give it to airlines and to nobody else. Canada, India, Pakistan, the Gulf states and almost all of Africa fall into one of those categories.
That is why a country can appear here with fifty routes and no domestic flying at all. It is also why the list is not longer. Commercial providers do cover the whole world, by buying schedule and movement feeds from the airlines themselves — but their data is not republishable, and a figure you cannot cite is a figure this site will not print.