Is there such a critter--reduced airfare for someone traveling on behalf of a non-profit organization? Perhaps a discount code?

Daughter, a 19 year-old college student, is founder and president of a 501(3)(c) and when she travels to 3rd world countries delivering cargo (i.e. educational supplies and medicine) she flies on her own dime. Airfares have shot up this year--Peru, usually around $400 to $500, is now $1000+ r/t out of Miami!!! and she is looking for any kind of discount code whatsoever.

She usually travels to Central America, South America, and Africa. She is not doing missionary work or affiliated with a church so she wouldn't get a discount that way (don't know if there is one offered).