Plot your route from Karlstad to Oslo on a map before booking your ticket. You may see some intriguing places along your travel route that you might want to visit.
Consider purchasing a ScanRail pass if you plan on traveling around Scandinavia after Oslo. These passes may save you money compared to purchasing individual tickets.
Speak with a travel agent if you have questions or concerns about your trip. You are not obligated to purchase tickets through an agent just because you get advice from him or her.
Log on to the SJ Railways website to check the availability and current prices of the train to Oslo. There is a button in the top right corner of the website to convert the text to English.
Find a departure time that fits into your schedule. This is a popular route, so there will be several options.
Book your ticket online or at one of the Karlstand station's ticket kiosks for the best rates. Though the ticket price is the same regardless of where you book it, the reservation fee on top of the ticket will fluctuate depending on where you buy the ticket.
Have the tickets mailed to you if you book far enough in advance to take advantage of this option. If not, simply go to the train station to pick the tickets up before your departure.