This remind me the author always conveniently avoid mentioning mist dispersion doesn't magically turn thing weightless, 40-50ton of aircraft dust wouldn't play nice with anything under.
Now that you mention it, true. At least they corrected that when turning seven's plague into nothingness.
Although I didn't care about the science behind it at the time
Although they're not mentioning how heavy it was and taking a look at
this 75m long one is 10 ton so maybe there's not as much weight as you mention. Also some the weight of the skeleton and outer layer will be spread over a wide area so it will conveniently fly away.
The biggest problem would be the cabin and the engines.
The variables should also include current the wind speed.
Can't he technically keep breaking it apart further, so much that it becomes raw energy? Although for that scale, pretty sure he needs his specialized military equipment and some cast time rather than his standard stuff.
Should also technically be able to break apart molecular bonds in ways that things react/fuse with molecules in the air to reduce the amount of "solids", although that sounds like a hassle to organize.
Isn't that what he did to Seven's plague? But now technically he doesn't have the spell ready and loaded and it was so tiring for him he couldn't bother landing back then and had to be catched by Miyuki.
BTW here's the Batman scene from the LN
IMO it looks better in the LN.