Attributions

Overfly is built on open data. Here is every source, what it is used for, and the licence it comes under.

KJFK → EGLL2,991 nm · 5,539 km · 3,442 mi

SOURCEWHAT IT PROVIDESLICENCE

OurAirportsAirport identifiers, names, coordinates, elevations and runway dimensions. 9,785 fields are carried in this build — every airport that takes scheduled service, plus the medium and large fields behind them.Public domain

EUROCONTROL Aircraft Performance DatabaseOne of three references for each of the twelve airliners, turboprops and other types it covers, and the source of the range or cruise speed where no manufacturer figure was found. Where a manufacturer's own page disagrees, its figure is used. EUROCONTROL describes these figures as indicative only.Indicative data · see source

Natural EarthCoastlines and land polygons at 1:110m, and the graticule, on every basemap on the site; and the country borders on the Traditional and Satellite map styles.Public domain

NASA Visible Earth · Blue Marble Next GenerationThe Satellite map style: September's cloud-free imagery with topography and bathymetry (Reto Stöckli, NASA Earth Observatory), reprojected in the browser. Served from Overfly's own files.Public domain

NOAA PSL · NCEP/NCAR ReanalysisThe seasonal wind model: each month's average upper wind, 1991–2020, on a 2.5° grid, sampled along the track at the cruise level. Data provided by the NOAA PSL, Boulder, Colorado, USA, from their website at https://psl.noaa.gov. Served from Overfly's own files.Public domain

IANA time zone databaseThe zone for every field, resolved from its coordinate, so local times follow daylight saving on the date you pick rather than assuming it.Public domain

Geist Sans · Geist MonoThe interface and figure typefaces. Self-hosted, the printed brief and trip summary included — no third-party font service is called.SIL OFL 1.1

D3 · TopoJSONProjection and great circle interpolation. Distances are computed on the sphere from WGS-84 coordinates, not measured off the projected plane.ISC

What is stored on your device

Overfly's own code sets no cookies. Visits are counted with Google Analytics, and the ads, in labelled boxes on the map and route pages and placed by Google on most other pages, come from Google; both set cookies. Nothing is stored on your device unless you ask for it. The privacy page has the detail.

Recent routesOnly if you choose to keep them. The last twelve routes you entered, as you typed them, held in this browser's local storage. Never sent to Overfly, and no account is involved. Clear them any time from the menu, or by clearing site data.Opt in

Display preferencesDistance and speed units, aircraft type including a custom profile, cruise setting, and whether you last used Simple or Flight Ops mode. Stored alongside your routes under the same choice.Opt in

Shared linksA link from Share carries the chart in the address itself — nothing is uploaded, no record is kept and no account is involved. Pressing Share does put that address in this browser's history, and anyone you send it to can read the chart from the link. Email opens a draft in your own mail app; Overfly never sees an address.In the link

FOUND SOMETHING WRONG

Runway lengths and elevations come from OurAirports, so corrections belong there — fix it once and every tool built on it improves. For anything Overfly itself gets wrong, send the route.

Correct the data ↗

IF YOU SHARE AN OVERFLY MAP

Exports carry the attribution bottom left and the watermark bottom right. Keep both and you can use the image anywhere, including commercially.

Natural Earth · OurAirports

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