Originally Posted by
gokeeper
Try book with UA flight numbers, UA46 and UA8904, have no problem book into W and price at $608.60.
Wrong date - OP is flying 16-Sep.
I see no inventory better than M if FRA-DXB is married to a UA-marketed segment, so you're going to have trouble. Multi-city search does not price married inventory correctly, so if the website won't click through anymore, no agent will be able to price that.
Matrix suggests a number of solutions which open W space on the FRA-DXB sector, including IAH-IAD/DFW/AUS/BOS/MIA-FRA-DXB