I had this one in my bookmarks, but I’ve never used it so I don’t know how good it is:

http://www.counciltr…

Student tickets have both advantages and disadvantages, so before you just buy a ticket from them check around elsewhere. Two other options are http://www.studentun… and http://www.statravel… STA has branches near most universities. I’d read some of the threads here and ask people here for advice before blindly going into an STA office. I know the one at UCSB is often staffed by employees who aren’t so bright or helpful, and I’ve found cheaper fares elsewhere everytime I’ve checked them in the last 5 years.

Try Travel Cuts…www.travelcuts.com. But as someone else said, I’ve often found cheaper fares by myself, either booking directly with the airlines or using expedia.