colicolicoli
Droid Gang
I like studentuniverse.com the little grid they give you w/ the flexible dates are nice. I'm not sure if they're cheaper than other places but I've only flown once and I went through them.
Edit: Just tried out a trip on studentuniverse vs orbitz vs cheapoair; studentuniverse and orbitz were the same but cheapoair's was higher, what the fukk
Edit: Just tried out a trip on studentuniverse vs orbitz vs cheapoair; studentuniverse and orbitz were the same but cheapoair's was higher, what the fukk