FtB;
SWA prices by segment. If there is a through flight it will price the whole leg (DAL-MSY-MCO) If it does not have the same segment (AMA-HOU-MCO) you will need to buy the flights separately to get to the destination. That is where you see a 89 dollar flight then a 49 dollar flight but when you add them up it get to be more expensive than DAL does. We book and price for origin to destination whereas LUV does not always do that. Add to it, they do not offer interline ticketing and do not sell on the On-line ticket brokerages. It makes it more time consuming to compare their prices.