Formula One is still hoping for a race in Miami but the COVID-19 pandemic has slowed things down, chairman Chase Carey said on Thursday.
Commercial rights holder Liberty Media has targeted Miami as it seeks to add a second U.S. race after the existing one in Austin, Texas.
There has been strong local opposition, however, with residents worried about excessive noise and air pollution.
Formula One and local organisers last year abandoned plans to hold the race in the downtown area and put forward a revised layout winding around the Miami Dolphins NFL team's Hard Rock Stadium.