Hi there,
Next week I'm flying MSY-ORD-IAD(Overnight)-LHR. I'm on the last flights of the day MSY-ORD-IAD and on the first (daytime) flight from IAD - LHR.

Can I check my luggage all the way through at MSY or will I need to collect it in IAD and recheck it in the morning?

It'd be so useful if this is possible as I can just take my carry on to the hotel for the overnight and not have to wait around for the luggage to be unloaded.

Many thanks,
Jason