Originally Posted by
ajlowe444
I booked a flight back in August for this Christmas to see family in CA, USA. LHR-SFO-LHR. Made the reservation with my US Airways DM number and was also able to pay to upgrade to E+ without needing to mess around changing between UMP/USDM numbers. This will be the second time this year Ive used this route with UA.
That's good to know. I booked the tickets last night on united.com, so I'll just change the numbers when I get to the airport on day of departure.