Originally Posted by
CPH-Flyer
Our office is in Fornebu, so I always found the Oslo Airport train convenient, with a relatively short taxi hop after, or even as I learned the bus went door to door to the station. I never checked the time difference to the regular trains. Maybe I should have. But starting before Oslo S always meant a seat available even on Friday afternoon. Oslo S is somewhat of a scramble for seats.
The difference between Flytoget and regular train on the Oslo S-OSL stretch is either 1 minute or 4 minutes (Flytoget being 4 minutes quicker if there is no stop at Lillestrøm), and the regular train is about half the price. From Lysaker (closest station to Fornebu IIRC), Flytoget takes 33/35 minutes while Vy uses 36, again with regular train costing around half
Seat availability is a legitimate concern though, I can understand that. Personally I rarely end up boarding before Nationaltheateret, and more often at Oslo S, so at that point it's a bit same-same in terms of seat space in my experience.