Ryanair was founded in 1985 by Irish businessman Tony Ryan. It is Europe's largest low-cost carrier, operating 270 low-fare routes to 21 European countries.
Two Dispatches undercover reporters spent five months secretly filming Ryanair's training programme and onboard flights as members of the cabin crew.
The reporters reveal what really takes place behind the scenes: inadequate safety and security checks, dirty planes, exhausted cabin crew and pilots complaining about the number of hours they have to fly.
And watch Ryanair staff speaking frankly about their experiences and attitudes towards passengers.
Watch the full documentary now