BritishAirwaysAPIs - https://developer.ba.com/

This covers most of the open APIs provided by British Airways Developer portal.

This source is written using HTML5, CSS and Angular JS. As a first step, kindly register yourself for Developer APIs. Ensure your browser is cross origin enabled. I used chrome browser. Create a shortcut and go to properties. Add this in target:

"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe" --user-data-dir="C:/Chrome dev session2" --disable-web-security