No it does not. CO does not offer any complimentary upgrades on any flights with BusinessFirst. That includes most international flights, the exceptions being some Central/South American routes, which don't have BusFirst). Most domestic flights do offer the complimentary upgrades, the notable exception being Hawaii (which have BusFirst).

You can upgrade on transcons using points and dollars and IMHO, the value is not that great give the price of the upgrades and the current low price of BusFirst tickets.

There's a great more info on this subject to be had in past threads.

thanks,

jk