How do low cost airlines, example being Ryanair, make such high profits yet sell flights for so cheap?

Question

I fly around Europe for €30-€100 per return flight without a checked bag. Yet Ryanair are one of the most profitable airlines in the world yet charging such cheap prices. Are other airlines just not as efficient as low cost airlines?

In: Economics

Answer 1

The motherfuckers make you pay a €55 fee per luggage item that you check in later than two hours before departure.