Where can I find a free web service, or data available in XML format, to check for flights availability? Something like OpenFlights to which provides airport data.
Just thought this might help anyone... https://www.airport-data.com/api/doc.php also provides API. you might have to sign up but its free. data is not real-time, so not to be used for flight travel
bookingCodeCount) and gives you 50 free queries per day. – Mark Silverberg Apr 26 '15 at 19:10