At this point, it looks like there are 3 airfare options:

• Book your own reservations which should cost about $650 from SFO. These will be the most flexible flights (mostly non-stop).  Book right away if you want to lock in good seats.
• Book as part of the 'group tour' and spend about $375.  These flights will have some restrictions in times/dates.  There will also likely be one stop in one direction.  Click here for more details.
• Use your frequent flier miles if you have them.  There are limited seats available using mileage to Maui, so do this as soon as possible.