Originally Posted by alanh
You're going to pay a lot for a last-minute Labor Day ticket, no way around it. It looks like SFO-HII runs $625 and $546 for ORD-HII, but much cheaper on any other dates than 2-5.
HP doesn't partner with UA or AA, so you won't be able to get an award through them anyway.
Another option would be to fly to LAS and drive to Lake Havasu. It about 150 miles each way, but might be cheaper.
Those fares are going to be a doozie. As stated by
alanh, fly to LAS and drive to HII, or, if price permits, fly to YUM and drive. YUM is much closer than LAS to HII, but flying to YUM may also be a doozie (even with 5 flts/day to PHX).