What's your impression of Beijing Capital International Airport? Busy, busy, busy. However, it only ranks No. 2 in terms of passenger traffic.

Based on the preliminary traffic data released by Airports Council International (ACI), more than 100 million passengers passed through Atlanta Hartsfield Jackson International in 2015, making it the busiest passenger airport in the world.

Among the top 10, four are located in the United States, and two are Chinese airports including Beijing Capital International Airport and Hong Kong International Airport.

Now it's time to show you the full list of the world's top 10 busiest airports.

 Dallas/Fort Worth International Airport

Dallas/Fort Worth International Airport [File photo]

Location: Dallas-Fort Worth, Texas, United States

Number of passengers in 2015: 64 million

Year-on-year Increase: 1 percent