Originally Posted by
Cupart
Cost wise that doesn't seem to make much sense, as it seems like most of the LCC stick to one manufacturer so a better price can be negotiated.
the LCC's also have a different operating model. They focus on specific segments, such as intra-european medium haul routes. All Ryanair's routes, for example, are pretty much similar in size and distance so it makes sense for them to stick with 737's. But if they would start doing domestic and/or intercontinental flights they would also need different aircrafts, possibly different brands as well.