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AMZBooking

Methodology

Data & methodology

Where our data comes from, how each number is calculated, and the rules a page must pass before we ask search engines to index it.

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Sources

  • OurAirports open data — Community-maintained global airport database: names, IATA/ICAO codes, coordinates, elevation, runways and official links. Publisher: OurAirports (David Megginson and contributors). License: Public Domain. Source
  • Natural Earth 1:110m land — Coastline geometry used to draw AMZBooking’s dotted world map. Publisher: Natural Earth (via the world-atlas package). License: Public Domain. Source
  • Natural Earth 1:50m admin-0 countries — Country outlines used to draw the maps on country airport pages. Publisher: Natural Earth. License: Public Domain. Source
  • Natural Earth 1:10m populated places — Locations of about 7,300 populated places (a representative point, roughly the city centre), with time zones and Wikidata ids. Publisher: Natural Earth. License: Public Domain. Source
  • AMZBooking editorial curation — Editorial groupings (e.g. which airports serve a metro area, destination themes). Flagged for human review before indexing. Publisher: AMZBooking editorial team. License: AMZBooking.

Our airport dataset currently covers 3,244 airports with scheduled passenger service and an IATA code (large and medium airports), retrieved on . City locations come from 7,281 Natural Earth populated places (v5.1.2); a city’s point is a representative location, roughly its centre.

Distances

Distances are great-circle distances between airport reference points, using the haversine formula on a sphere with the mean Earth radius of 6,371.0088 km. They are shown in kilometres and miles (1 mi = 1.609344 km). Flights rarely follow the exact great-circle path, so the distance actually flown is usually longer. A great-circle distance is not a flight time.

Nearby airports

“Nearby airports” lists other airports with scheduled service whose reference point is within the stated radius (usually 100–150 km), nearest first. It’s a starting point for comparing departure options, not a statement about transport links between them.

Counts, rankings and findings

Statements such as “the longest runway of the 42 airports in Spain” or “the only large airport within 150 km” are computed from the datasets above. Each one names what was counted and over which set (always airports with scheduled passenger service in OurAirports data), and the page shows how it was calculated. Rankings order a single measurable attribute — elevation, runway length, a count or a distance — and are never a judgement of quality, service or popularity. “Large” and “medium” are OurAirports’ classifications. Runway length is the physical length OurAirports records for the longest open runway.

Prices

We do not publish fares on our guides. Live prices appear only on our search results page, where they come from airlines and travel agencies at the moment you search, and can change until you book with the provider.

How pages qualify for search

Every guide is scored out of 100 for data completeness, unique facts, original calculations, source coverage, freshness, distinctiveness from similar pages, editorial depth, internal links and metadata. Only pages scoring at least 80 (or a stricter family threshold), with no blocking issues and human review, are marked indexable and included in our sitemaps. Each new type of page is reviewed page by page first; once a type is approved, its pages still have to pass every automated check, and a random sample is re-checked by a person. Everything else stays available to visitors but marked “noindex”.

Freshness

Each fact has a refresh class (from “volatile” to “evergreen”). When a fact passes its refresh window without being re-checked, we remove it from indexable pages rather than present it as current. Questions about a number? Ask us.