How to use and cite our data

Our flight statistics, charts and CSV files are free to use, commercially too, under CC BY 4.0 . Credit Airportia and link to the page you used.

What you can use

• Rankings and figures on Statistics: most delayed airports and airlines, cancellations, busiest airports, flights per day.
• Flights Monitor: daily flights worldwide and by country since 2020.
• The airport and airline statistic pages (delays and cancellations, last 10 days).
• The charts on those pages and their CSV downloads.

Not covered: live or per-flight data (flight status, departure and arrival boards, flight histories, aircraft positions), airline logos and photos, and automated collection from the site. Linking to any Airportia page is always welcome. Full terms: Terms of Use, section 1a.

How to credit us

Write this next to the figure or chart, linked to the page it came from:

Source: Airportia (airportia.com)

Every statistics page has a “Cite this” box with a ready sentence: the figure, the page title, the period, the link and the date you retrieved it. For example:

Source: Airportia, "Most delayed airports, October 2026" (1–31 October 2026), https://www.airportia.com/statistics/most-delayed-airports/2026-10/, retrieved 3 November 2026.

The main ranking pages always show the latest period. To cite a fixed month, link its monthly page, such as October 2026; those figures do not change.

Where the data comes from

• Flight schedules and statuses: Aviation Edge .
• Live aircraft positions: ADS-B, via Aviation Edge.
• Counting, rankings and charts: Airportia, from those flights.

Statistics are recalculated once a day at 04:00 UTC; Flights Monitor adds the previous UTC day each morning. Each page has a “How we calculate this” or “How we count” note with the exact method and the minimum sample.

Before you quote a number

• These are flights tracked by Airportia, not every flight in the air. Private and military flights are not included.
• From 22 July 2025 our supplier covers about 5% more flights worldwide. Year-over-year changes between 22 July 2025 and 21 July 2026 read about 5 points higher than the real change in traffic.
• Average delay counts flights with no reported departure time as 0 minutes, so it is a low estimate. It is not the share of flights more than 15 minutes late.
• Days are UTC calendar days.

Press

Airportia is a free flight tracker and airport guide, run since 2013 by Internet Projects Ltd (UK).

Questions about the data, a custom cut or a quote: contact@airportia.com. Logo: logo.png . On X: @airportiacom.