Great topic! I was looking for the same thing (something like the evreward site where you could type in a charity name and see which loyalty programs give miles and how many miles/$ for donations), but I came up empty. I also did not have much luck with general internet searches. Many organizations allow you to donate miles, but I'm interested in donating money.
I do know that AA has ongoing charity partners who give miles for donations:
http://www.aa.com/i18n/AAdvantage/ea...ities/main.jsp
UA/Delta also are doing a promotion now with the National Foundation for Cancer Research:
https://www.nfcr.org/index.php/compo...t/article/1440
If anyone knows of any other opportunities, particularly those that would provide UA miles or provide miles for donations to the American Heart Association or Susan G. Komen (besides AA for Komen), please share!