I *never* fly. I just don't have the type of job or lifestyle that requires it, so I know next to nothing about booking a flight. I've never bought my own tickets, they've always been purchased by an employer.
So my wife and I are going on vacation June. When should I buy the tickets? I noticed on Northwest's web site, our tickets have gone up a total of $18 since last week. Should I book them now to avoid future price hikes, or wait it out in case they go down?