How does the flag look like of denmark?

Answer 1

The closest to an answer would be the flag used during the Kalmar Union from 1397 to 1523, which unified present day Denmark, Norway, Sweden and Iceland, along with parts of Finland and Northern Germany. In the style of the Nordic cross flags still used in all Nordic countries, the Kalmar flag was a red cross on a yellow background. However, this design has no usage in contemporary Scandinavia.

Answer 2

The Danish national flag, which is the oldest state flag still in use, is dark red with a white cross.

Answer 3

Red with a white cross, check out "Related link" below.

Answer 4

It is red with a white cross