The distance from Copenhagen Airport (CPH) to Nyhavn is approximately 14.4 kilometers. The travel time can vary depending on traffic conditions, but it generally takes around 20 minutes by car or taxi.
As for the taxi cost, it can also vary based on factors such as traffic, time of day, and specific taxi company. However, as a rough estimate, the taxi fare from Copenhagen Airport (CPH) to Nyhavn can range from approximately $103, including additional charges such as luggage fees and waiting time.