Originally Posted by AirCoxswain

The idea that the 321 neo can't do SEA/LAX is Hawaii is total nonsense. I've only flown it transcon, but SEA-FLL is just as long as SEA-HNL. That's just a joke. I've done those routes starting with 75% fuel and landed with 1.5 hours FOB. There are plenty of reasons network chooses to use a 757 when one is available. I'd guess the main one is cargo. It could also be that it's a leisure market, so they want to put the lower customer experience on that route. It could also be that the 757 is less bad relative to the 321 neo on operational costs doing that instead of more legs domestically.