We are planning to be in Portugal September 8th - 21st, flying into Porto and out of Lisbon. I was looking into booking train tickets and dates in September are not showing up on routes I have checked- are these blank because I am 70 days out? How early can tickets be booked?
For those who have taken this route (Porto to Lisbon), is the IC line more scenic than the high speed AP trains? It appears that the AP trains travel farther inland.