Both killed by their bigger sibling. The 319 is no longer needed when the 320N matches the performance gain. 738 kills 700, see DAL and SWA for details.

The fact they openly say the 319 is still superior in many ways is proof to me they love their own stuff more. Go figure. The 319 btw is the variant with the near 7000 mile range, for ACJ purposes.

Fwiw:

a319neo orders: 51 deliveries: 0 just certified with Leaps and PW to go
a220-300 orders: 412 deliveries: 51
A220-100 orders: 90
A220-500 orders...0

A319ceo orders: 1489, backlog 19
A319ceo orders: 4,770 backlog 118
A320neo orders: 4,101 backlog 3,745
A321ceo orders: 1,800 backlog 113
A321neo orders: 1,985 backlog 1,907

That's roughly 6000 order backlog for the 320 family. A total of almost 14,200 aircraft. And that's 14200 airplanes using the same type.

I dont think Airbus is going to switch to the CS a fraction of their way through that backorder.

Or switch to CS that got 500 orders over 10 years with a 5th of that going to Delta. The same Delta who decided to wait on ordering neos or maxes because we have bargain MD90s and 717s and we dont do new technolo... holy #### the rest of the world does.