Stealthflyer, I would check with Southwest or CO or Delta and see if they have special fares for your friend to attend the funeral. Explain the circumstances and see what happens.
I would also look into southwest and see if they might have something out of Jacksonville.
I know this is repeated information but maybe it can help.
Also, this is a good topic for General Travel Talk so you might want to post a link to this forum or post again. Essxjay makes a good point.
Good luck and let us know how it goes.