I’m also on a weird one-off - flying CVG-IAD in Tuesday. It’s mainline on a 320. Return appears to be Wednesday morning.

obviously, this route itself isn’t odd - it’s up to 4 x daily now, depending on time of year. But it’s always been UAX only - used to CR7s, and E75s in the busier times of year. In the 10+ years I’ve been in CVG, never seen a mainline plane scheduled on this route. So wondering why the random mainline?