Some of the posts in this thread have hit on it, but something to seriously think about is how much actual work you want to do at work.

Jobs that require travel are not typically 9-5 type of operations. The company is paying for you to be there and they expect a lot of effort out of you to justify the expense.

Consulting firm, in particular, work this way. Yes, you'll see the world (sometimes, depends on the firm, more likely you'll see the USA), but it won't be because you're off galavanting around the city. It'll be in cabs to and from airports and hotels. The rest of the time you'll be in some office.

So think about the lifestyle you want to have in terms of your work hours first. That would be my suggestion.