And, of course, there are SAM systems coming too, to help stop the cruise missiles. And the planes will help deal with the cruise missiles also. The F16’s with AMRAAMs and look-down-shoot-down are likely to be very useful for that. And to relieve the ammo problem for the old Ukrainian S300s.
Btw, if it was so easy to shut down an air force with cruise missiles the Russians would have done it to the Ukes by now. But they haven’t, as it just wastes ammo.
The Uke air force is over currently. And those F-16s looking to get high and shoot down cruise missiles will be right in the S400 envelope.
Nobody is going to do much in the air there unless it’s the USAF. And even they can’t unless they intend to conduct SEAD inside Russia.