Beijing Capital International Airport to the forbidden city?

Beijing Capital International Airport is approximately 30 kilometers (about 18 miles) from the Forbidden City. The most common ways to travel are by taxi, which takes around 30-60 minutes depending on traffic, or by using the Airport Express train to Dongzhimen Station, followed by a subway or taxi ride to the Forbidden City. It's advisable to plan for potential traffic delays, especially during peak hours.