This is part 4/4 of my iPad-version review series of 4 classic boardgames.
Ticket to Ride on iOS is good looking, it plays fast and the graphics are excellent. You can tell that Days of Wonder have experience with doing these with it's online games.
The few gripes I have with the game are that you can't do anything with the bots (and they feel the same) and that Ticket to Ride gets a bit pricey with Europe, Switzerland and the USA-mini-expansions... but when I say pricey, I mean 11€, which is not that much when you think about the amount of stuff you get with the expansions.
Ticket to Ride suits nicely to be played on the iPad and it even works quite nicely with hotseat play (now that it has been implemented on the app).