Originally Posted by florin

1. Depending on what kind of tickets. If domestic, it depends if you are elite or not. (Elites can UG with miles on all fare classes, otherwise not the cheaper ones - check the NW website for more details.) If int'l, they need to be B or Y fares.

2. You can purchase 3 tickets using miles. There is no limit to the number of tix you can purchase with miles; you're only limited by award availability.