Originally Posted by
UAX_Brasilia
If you are redeeming for C or F, most will tell you to redeem on some airline other than UA or US.
It depends what you're looking for. UA has the best C seat if you get the new C.
It looks like UA just opened up a bunch of XC and XF, at least on one route I've been monitoring. January was pretty sparse on SYD-SFO last week, and now there's a lot of XC (as high as XC9 on some days).