Originally Posted by
KARFA
Overnight - absolutely
Daytime flight when you don't intend to sleep - more marginal and up to your personal preference.
+1.
My strategy for my recent trips has been to book CW overnight and WTP daytime, then UUA or hoping for an upgrade. WTP is a really good product and daytime works better for time zones adjustment because I don't sleep much and I can actually get a full night of sleep at my destination.