Many different carriers operating on the same route is usually regarded as a signal of a competitive setting and, therefore, as a situation potentially beneficial for customers in terms of lower prices. This is obviously true if the argument involves a comparison between different market forms...

The practice of dynamic pricing, so typical of low cost carriers, is generally regarded as a form of price discrimination between "leisure" and "business" travellers on the single flight or on the single route. Across different routes, however, things may go differently. If price increases in...