The metro is a quick and easy way to travel to and from Copenhagen city center. The metro has two lines - the M1 and M2. One of the lines runs directly to Copenhagen Airport, while the other runs to the suburbs. The Metro allows easy access to the airport from the city center as it stops right at terminal 3, and only takes approxiamtely 20 minutes. The Metro is a great way to travel to and from the city Center especially since it runs 24 hours a day and seven days a week. The metro is very convenient and if you ride the metro you will even notice the cleanliness, which makes your trip that much more enjoyable.