I tried to combine as many trips as possible. I carried around my calendar all October and November, checked my phone messages 5 times a day, and my e-mail 20. I wouldn't necessarily recommend doing it that way. But I was able to do 2 interviews in cleveland in one flight, and did a few road trips. Cleveland to Ann Arbor to Chicago was one.
Figure out where you know people, whether it's cheaper to fly or drive, and stuff like that. Sorry, no magic tips from me. Hopefully, someone will have some.