Clarion hotel oslo airport is one of the largest conference and best equipped hotel in norway the 432 rooms were renovated in autumn 2007 and includes several rooms for people with allergies wi fi lets you connect to the internet throughout the hotel the airport shuttle service door to the main airport terminal in just 7 minutes and runs every 20 minutes between 5 am and 1145 pm the airport express train let to get central oslo in just 20 minutes