I was just reiterating everyones thoughts. Honestly I havent looked into it one way or another. If you're interested in United miles you can get a
CHASE United
Chase Sapphire preferred
and Chase Ink bold
That alone should cover your ticket if there is availability.
@Rivka
1)sapphire preferred card you need to spend $3k in order to get 40k in points within 3 months
2)United explorer you need to spend $1k for 30k possible 55k points
3) Not exactly sure about ink bold.
You have to realize there are different tricks to do this (3bm, matching 55k ) which you may not know. Its a lot of basic information to learn but once you know it your good. I hope it goes well.