Ferries, Trains, Planes and Busses

http://www.visitdenmark.com

The Visit Denmark web site offers the best grouped information on all the travel forms in Denmark with links to all the main operators.
Just click on the transport section and choose your means of travel.

http://www.rejseplanen.dk/

Find the relevant railway and bus times/prices.

Airline Bookings

http://www.sas.dk/en/        

http://www.ryanair.com/da

http://www.norwegian.com/en/

http://www.easyjet.com/asp/en/book/index.asp

http://www.cimber.com/

http://www.flybmi.com/bmi/en-gb/index.aspx