If you're going to be an academic and teach at a research university, you will have a great deal of time to travel -- at *least* 4 months annually maybe 5 1/2 months depending on whether you're on quarter (2/2/0) or semester (2/2). You'll also be given a research budget for domestic and international conference travel -- I agree with the people who are saying focus on finishing your program successfully so you have these perks to enjoy in the future.