Source: Airline websites
Data points you can get: The data points you can get related to flights are usually the flight names/ID, date of journey, departure time, arrival time, status and the price. Apart from these, there can be other data on the booking sites like the facilities available in the flight, the stops if there are any and the total journey time. Any such extra data can be scraped depending on the availability of the data on source websites.
You can run your own price comparison site using the scraped flight prices from travel sites. Price comparison crawl is done daily and new prices are updated to the existing datasets every day. The flight schedule data can be extracted from travel sites using programmed web crawling bots and data be delivered in the preferred format.