I'm trying to figure out the best type of ticket I should purchase or redeem to get my daughter to Dublin for her spring semester.

I have enough mileage in either AA or Mileage Plus.

I'm curious about ticketing that will allow the most flexibility for the least cost. I hope she will have the option/inclination to venture further abroad after her study is done, possibly flying home from that location.

So, the return date from the unknown location would, best case, be able to be determined at a future date. Do such tickets exist? Do either of my airline program offer them?

Many thanks for the free advice. Can you tell I never got to have this experience am living vicariously through her?