B6 has cherry picked a few cities and does not fly to hundreds of other cities that United DOES fly to, so making B6 your domestic airline makes no sense to me or to the vast majority of flyers.

And its FF program is one of the VERY WORST by arbitrarily allowing hard earned miles to expire JUST ONE YEAR after issuance -- that's true even if you continue to have activity by flying JetBlue. Does United allow ANY miles to expire if you have ANY activity within 18 months? No!

Except as may otherwise be provided for Holders of the JetBlue Card from American Express as set forth in paragraph 7.4, POINTS EXPIRE ONE YEAR AFTER THEY ARE EARNED AND TRUEBLUE AWARDS EXPIRE ONE YEAR AFTER THEY ARE ISSUED.

The program also requires 100 points to get a single RT for free, but you only earn SIX points on a transcontinental flight and far fewer on shorter flights. That is the equivalent of charging 41,082 miles for a RT domestic ticket. Wow, how generous is that? I think I will stick with United for E+, Mileage Plus, and the number of great destinations it has to choose from.