What is “base denial”?
Crater the runway so enemy aircraft can’t use it.
Burn any remaining fuel, knock down the tower, raze the buildings, sabotage the ground vehicles...
Durandal munitions, or the cruise missile variant that drops "bomblets", basically land mines all over the runway and tarmac.
Here is a picture after IDF used Durandals on the Beirut Aiport:
Note: Every RAF Tornado lost in Gulf War I was due to them flying straight down the runway and delivering munitions. Iraqis placed their ZSU-23-4 and ZSU-57s at the end of each runway and lit the Brits up.