Originally Posted by
vincentvan
I just spoke with a UA awards reservations agent and she stated you can use *A miles (specifically US miles) to book a one way saver award ticket on UA....
You were speaking to UA. If that's what you were told, the agent was incorrect. They have zero control over and no access to Dividend Miles program or your US miles.
You cannot call UA to spend your US miles. You must call US to spend US miles on a UA itinerary. US does not permit one way awards for half the round trip rate.
Go for it - call US and try to book a one way domestic for 12,500 miles on UA. Won't happen.