Originally Posted by
jlisi984
I split between CO and AC this year. Simple choice - lots of US flying, free upgrades! ^ I have looked into other alliances - however *A flies to 99% of the places I go - and to split would be too much of an effort. Especially since AC offers a reasonable programme as far as upgrades go (used to be better, but still).
you know your trade off would be the RTW redemptions right?
Right now its day 5.... i issued my RTW and my friend who is duplicating my booking (cause we found 2 seats for my whole trip except 1 segment)..... UA (future CO) blocks every single flight operated by another carrier on my itinerary.... 10 calls ending up nowhere!