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
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this seems to have airport and aircraft info, but nothing related to flights. It would be an appropriate answer here: opendata.stackexchange.com/q/3850/1511– philshem ♦Jan 5 at 10:37
bookingCodeCount) and gives you 50 free queries per day.