Oh look, the Bombardier sales rep is back again.

But seriously, the magic of the 220 isn't the range, payload, or technology, it's the fuel burn. Airbus numbers with RJ fuel burns. The problem is it's probably not worth starting a new fleet type just for that, and Boeing is practically giving MAX's away with similar or better numbers. That's why we gave the CS100/A220 a serious look at allegiant but then went with the Boeing.

Another notable issue is the training and maintenance. The C Series is an Airbus in name only. There's zero training or parts commonality with a real Airbus. May as well take a highly discounted MAX if you're in the market for a completely different fleet from what you already have. I think the only reason Delta has been successful with that jet is because they got them at a steep discount after the trade dispute, and used them to replace large RJs on long thin RJ routes. ULCCs don't have that kind of business model.