Privacy
No accounts, no cookies, nothing that identifies you.
We count visits with Eurolytics, a cookie-free analytics service hosted in the EU: which pages are opened, from which kind of device and country, and the site that sent you. It stores no cookies and no personal data and cannot tell who you are; the airports and flight numbers you pick are part of the page address, so they are counted as page views like any other page.
We also count a few taps, such as which form you used and whether you drew your own line on a chart, never what you typed.