Awardwallet (I'm using it on the website) does trips as well, it auto-imports and creates them from your saved hotel and airline programs. It can also provide a link to auto-import into calendars.
Initially I used awardwallet just to keep track of points / status but then discovered the Trips feature. The formatting could be better.

Planning to try TripIt soon to compare. Installed it but did not figure out yet how to get any data into it except entering manually, seems one must buy Pro right from the start to do anything useful with it?