Originally Posted by
1KHI
I have done the SDC on CO and UA. Definitely like CO much better, especially because there's a chance you can move your flight up to the day before or after you are originally scheduled to fly. Since the same fare class has to be available, then that decreases chances that a flight after originally scheduled to fly will clear, but still like that flexibility.
On the other hand, you CANNOT wait-list the day before or after departure. That is, wait-list only applies on the day you are originally schedule to fly (I recently run into troubles doing the day before departure, had to wait until the fare class opened, which it did), so be careful...
With CO, you can change to a flight that's within 24 hours of the flight you want and the flight you have, so this gives you the option to fly the day before or the day after (but as you get closer and closer to the original flight, you'll be at the airport on the chance that you can't get the flight changed).