Flight
Tucson airport will be your most convenient airport, it's smaller than Phoenix, so the prices will be a little more expensive and most likely include a layover.
Flight
International airport, less expensive than Tucson and you are more likely to find a non-stop flight. It is a 1.5 hour drive to Tucson from Phoenix.
Travel Note
Our favored option for guests is to rent an air BnB. Much nicer to stay in a home and sometimes you can find really good deals. Split the cost and share with other guests who are attending as well.