Solbustad made his international debut at the Four Hills Tournament 1972/73 . In doing so, he missed the leap into the top 50 in all competitions and thus achieved 56th place in the overall standings with 692.6 points. After a year off, he started again at the Four Hills Tournament 1974/75 . He achieved his best individual result with rank 26 on the Bergiselschanze in Innsbruck . In the overall ranking, he finally reached 35th place with 718.1 points. During his last Four Hills Tournament in 1975/76 , he could no longer build on this performance. In the overall ranking he reached 49th place.
Norway