Air duels did not end in the 70's President Reagan spent $3 trillion dollars during his administration. And to it we credit the end of the cold war. In the early 80's the cold war got red hot with the Starwars (SDI)program and many covert operations. These operations consisted mainly of air, sea, land probes near and within Soviet borders.
Under the Reagan administration Air incursions actually increased putting pressure on the soviet military to maintain a difficult high level of readiness. US-led naval and air operations, including psychological warfare missions conducted close to and over the Soviet Union stress the soviet defenses beyond capacity.
Fleet exercises conducted in 1981 and 1983 near the far northern and far eastern regions of the Soviet Union demonstrated US ability to deploy aircraft-carrier battle groups close to sensitive military and industrial sites, apparently without being detected or challenged early on. These exercises reportedly included secret operations that simulated surprise naval air attacks on Soviet targets. In 1983 US warplanes simulated a bombing run over a military installation on the small Soviet-occupied island of Zelenny in the Kuril Island chain.
Another good read is Peter Schweizer's book "Victory: The Reagan Administration's Secret Strategy That Hastened the Collapse of the Soviet Union" 1994