There hasn't been a night train between Oslo and Stockholm for many years, so it sounds like raileurope is trying to sell you a ticket to a train that does not exist. There are a couple of daily intercity trains between the cities, and there is also an option of going via Gothenburg.
The cheapest tickets we've found for trains from London to Stockholm are £131.00. If you book 30 days in advance, tickets will cost around £266, while the price is around £197 if you book 7 days in advance. Booking on the day of travel is likely to be more expensive, so it's worth booking ahead of time if you can, or check our special offers The cheapest tickets we've found for trains from Copenhagen to Stockholm are AU$41.04. If you book 30 days in advance, tickets will cost around AU$211, while the price is around AU$188 if you book 7 days in advance. Booking on the day of travel is likely to be more expensive, so it's worth booking ahead of time if you can, or check our special

1a Travelling from Oslo (Norway) to Narvik (Norway) To travel in Norway by train with VY or another operator, please buy your train ticket online via one of the following booking links. There you find exact schedules and ticket prices. Advance fares (Minipris) can be considerably cheaper compared to full fare tickets.

Copenhagen, Oslo, and Stockholm are all well served by local airlines. They are also served by train companies, with SJ being the largest. The one route you’re unlikely to take is a train between Oslo and Copenhagen. There is no direct train service, it’s a long distance, and it’s pretty time consuming. Cost of Flying
. 275 30 394 165 28 238 150 484

is there a train from oslo to stockholm