Donate Your Airline Miles Some of the largest donations are made on destination prizes. Your miles go a long way in helping DIFFA/Chicago fight Aids.Please enable JavaScript in your browser to complete this form.LayoutDonor Name *Company Name *LayoutEmail *Phone *How many miles are you donating? *What airline? *Choose an OptionAmerican AirlinesUnited AirlinesSouthwest AirlinesDelta AirlinesOtherSubmit DIFFA Chicago 222 W Merchandise Mart Plaza Suite 1445BChicago, IL 60654 Contact Us (312) 644-6412 info@diffachicago.org