Originally Posted by
OPFlyer
I would continue to fly CO and credit my miles into their program unless you have strict corporate booking policies. If you fly intra-CA you can always fly United and credit the miles to CO once they enter the Star Alliance.
I'd fly on AS for CO credit now or WN for convenience. Then credit from UA flights later in the year, assuming it happens by then. It will be late Q3 or Q4 most likely when they make the move. The absolute earliest it can be is late July based on 9 months from the DL/NW deal close date of late October.