> But even those get reused from week to week (even day to day?) It's quite normal, especially in the US > United 1644 operates BDL-IAD-IAH-MCO, yet BDL-IAD o

> But even those get reused from week to week (even day to day?) It's quite normal, especially in the US > United 1644 operates BDL-IAD-IAH-MCO, yet BDL-IAD operates as a 737-800, IAD-IAH operates as a 757-200, and IAH-MCO flies with a 757-300. https://www.southwestaircommunity.com/t5/Southwest-Stories/The-Science-behind-Flight-Numbers/ba-p/42760 https://www.southwestaircommunity.com/t5/Southwest-Stories/T... Looks like that specific flight number is no longer a multi segment.