I recently discovered the
Royal Robbins Alpine Road Pants and am a huge fan. They are not baggy like most travel pants, are comfortable in a wide range of temperatures, and have a thinner cut but also a slight stretchiness to them. They have a hydrophobic coating and are super easy to wash on the road.
I recently returned from a 3 week trip and found myself wearing these pants way more than my other pair of pants (Levis Commuters) since the RR pants feel like pajamas. They are also great for wearing on the plane.