to Copenhagen
Via the Storabaelt Bridge to Copenhagen. For current prices and tickets: storebaelt.dk.
Via the ferry from Puttgarden to Rodby, this crossing takes about 45 minutes.
Book via: www.directferries.nl or combination ticket with the Öresund Bridge: www.oresundsbron.com
Copenhagen to Sweden
The Bridge (Öresundsbron): here you can go for a single ticket, but you can also opt for an ÖresundsGO.
This is cheaper if you use the bridge at least twice.
Info and tickets: www.oresundsbron.com