Tahiti is just a bit further than Hawaii but since it is in the Oceania region you will need 70,000 miles one-way in Business Class. The ANA Mileage Plan requires only 120,000 miles Round Trip in Business Class.
I still feel (cheap) paid tickets to Hawaii and a tag-on flight with Hawaiian Airlines (an American Express Membership Rewards partner) is a decent deal and you get to spend time in both places. Note that Hawaiian only goes from/to Papeete on Saturdays.
There is another contender – French Blue airlines that plans a service from Paris via San Francisco but does not have traffic rights from San Francisco (yet).
– Emirates and flyDubai (they are now being mentioned almost always as one airline) have resumed flying over Iraq as ISIS is hopefully defeated for good
– Niki has declared bankruptcy after Lufthansa abandoned the deal (apparently regulators figured out that the airline would have a 100% monopoly afterwards)
– Virgin Atlantic has trouble keeping their 787 in service and many Manchester flights (including SFO) are getting Delta A330s or Air Berlin plane instead.
I’m NOT a fan of the Virgin Atlantic Business Class seat – but I like their lounges, food and vibe so this may actually be an upgrade.
– Singapore Airlines is getting their first, newly equipped A380 this week, don’t expect a quick roll-out but marvel at the shiny new cabin pictures instead 🙂