Junior auditors and junior consultants (both realistic entry-level positions with a business & admin degree) can involve significant travel. As a consultant, expect limited travel for a year or two, then significant travel.

Essentially, any industry that routinely works at a client site, rather than out of their own offices, will involve considerable travel. Sadly, you don't always have a say about where you're going, and for every glamorous gig I've had in someplace far-flung and exotic, I've had five gigs in some domestic industrial belt that meant long train / car commuting daily.

Want sexy? Work as a merchant banker. High finance tends to prosper in large cities.