I am about 80 pounds overweight, and am away from home for school.
I would really like to lose as much of that weight as I can in the next 87 days. My ideal would be to walk up to my family in the airport and have them not recognize me.
What healthy things can I do to lose as much weight as possible in the time I have?
I am considering going on a water fast, but have yet to hear conclusive information from a credited source about the positive or negative impacts of that.
I am 20, male, vegan, 6ƈ", 290 lbs, and currently lift weights 3 times during the week, and play soccer on sunday nights. What else can I do to boost my weight loss?

Well, water fasts don't really help you lose weight for the long term. I remember reading this on WebMD - most of their diet information comes from the Cleveland Clinic, but I can't remember the exact article, but I did search on "fasting" at some point.
Good news, you have 3 months to lose weight, so if you start now with a balanced, calorie-restricted diet, you could expect to lose 15-30 pounds (maybe a little bit more). If you continue to lift weights and add some cardio, then you may *look* like you lost more than that, even if the scale doesn't say so.
Here's the link to the diet site that I use. It's free after registration, and you have the option of using their meal plans (they can set one up for vegetarians... I can't remember if vegan is an option), or entering your own plan. Start counting calories to make sure that you are not over or under eating.
Good luck!

try any diet plan for a balanced diet
http://redtagdeals.com/diet_plans-coupon...

Try going vegetarian.

Take good mineral supplement. (Selenium, Chromium, Iron) and excise regularly.
Also, include grapefruits to your diet.
Good luck!