Danish airfields and collective Scandinavian defense

Could securing or disabling Danish airfields have made the German invasion of Norway much harder?

Yes, temporary denial would have disrupted German air operations, but defending Denmark required prior Scandinavian mobilization and later Anglo-French reinforcement.

The prompt asks whether Churchill considered securing Denmark so German aircraft could not use it as a stepping stone into Norway. A 1940 airfield could often operate from a suitable flat strip, so destroying fixed facilities would not deny it as permanently as a modern airbase. Even a temporary denial, however, would seriously constrain the opening German air effort over Norway. Holding Denmark would require Denmark and its neighbors to mobilize and create a coordinated defensive zone along the German frontier. British and French reinforcement could then support that Scandinavian force, but the scheme depended on preparation before the invasion began.