So I'm in a bit of a conundrum.

I've already booked a return flight from LIH to SFO on the Monday after Thanksgiving, but need to book a companion flight. However, the route I'm on has disappeared from reward availability and I'm left with a slew of other flights (all with "1 left at this price") that will split up me and my companion.

What is the best approach?

Any insight is greatly appreciated, thank you!