I recently flew a LAX-SEA roundtrip and was impressed by the beautiful views of Mt. Rainier and Mt. St. Helens on our way into/out of Seattle. Do the CLE-SEA and SEA-IAD flight paths also enjoy similar views?

My parents are flying outbound CLT-SEA and SEA-IAD on the return in October and I'd like to make sure they select seats on the correct side of the plane on both outbound and return legs to enjoy the view.

Thanks!