Through 2019 its a net gain. We are getting new planes but not different from previous orders. The airline also converted aircraft so the net game is zero.

2014 (-1)Fleet Plan.
2015 (-5)Fleet Plan.
2016 (-3)Fleet Plan.
2017 +2 Fleet Plan.
2018 +2 Fleet Plan.
2019 +5 Fleet Plan.
2020 +15 Fleet Plan.
2021 +13 Fleet Plan.
2022 +7 Fleet Plan.

Getting rid of 190's is great for the financial health of this airline. While the aircraft approaches a similar reliability to the 320 it does so at an incredible increase in maintenance cost. On the flip side the 321 improves CASM, for Jetblue, but it may also reduce frequency which can affect future hiring.

The growth, in terms of airframes, is not exactly what jetblue claims. We are still getting, roughly, the same amount of aircraft just different types. I'm not suggesting this is good or bad because right now we just don't know. For the second time in jet blue's history growth may come from attrition instead of growth. We will see.

As with all jetblue provided information there is alway another side to the story.