Yes, there are passport controls when traveling between Malmö and Copenhagen. Although the strict controls that were in place from 2015 to 2017 have ended, occasional checks can still occur at either border. It’s a good idea to have your passport on hand just in case. However, there is no formal border control, and you can easily take a train, bus, or car between the two cities. The fastest way is by road, taking approximately 40 minutes via the Øresund bridge. Trains run every day, departing from Malmö central station and arriving at Copenhagen’s Kobenhavn station in about 35 to 40 minutes. So, enjoy your trip across the Øresund!