Originally Posted by sbm12

I have no idea why you think that CO requires more miles for a reward trip than DL does; their current reward structures for "saver" rewards match and DL actually has more levels and higher rates for the non-saver rewards.

The thing to remember with JetBlue is that your points expire after 12 months, whether you've used them or not. You cannot extend the life of the points based on additional activity, unlike the programs of all the others you listed other than VX. And you get 2x points if you book online, so that gets you 12 points each direction of the trip. You'll still need to fly 3+ trips to get to your 100 points, and from what it sounds like you aren't going to make that in a year.

I also cannot figure out your sheet in terms of the accrual of JetBlue points. How do you go from 72 points to 2 points? It seems like you're redeeming a reward, but that doesn't happen until you surpass 100 points and you don't seem to ever be doing that.