The most common way to travel to Lund is to go by plane to Copenhagen Airport (Kastrup). From Copenhagen Airport there are connections by train to Lund via Malmö Central Station over the bridge every 20th minute except a few hours in the middle of the night. The total time from Copenhagen Airport to central Lund is about 35 minutes.
Tickets have to be purchased before entering the trains. Tickets can only be purhased in automatic vending machines located on the platform. You can find the connections between Copenhagen Airport and Lund on Skånetrafikens web page. Search following the template below the link.
Some airports in Europe have connections directly to Malmö Airport (Sturup). From this airport, about 25 km from Lund, there are frequent buses to central Lund.
If you arrive to Lund by car you are most probable to arrive via E6 or E22. The map below may be of assistance.
The Öresund area