One of the defining characteristics of Southwest is that they ONLY fly 737s (Boeing). That and their focus on domestic flights helps them offer good rates and low/non-existent fees. I guess their maintenance only has to focus on one plane. However, it seems like they got caught up in Boeing's "737 MAX is the same plane" scam because they fly some of those too and I believe it affected their stock.
One of the defining characteristics of Southwest is that they ONLY fly 737s (Boeing). That and their focus on domestic flights helps them offer good rates and low/non-existent fees. I guess their maintenance only has to focus on one plane. However, it seems like they got caught up in Boeing's "737 MAX is the same plane" scam because they fly some of those too and I believe it affected their stock.