Oslo Gardermoen Airport is Norway’s most important airport and handles more than 25 million passengers a year. It serves as a hub for SAS, Norwegian Air Shuttle and Wideroe. You can get to various destinations worldwide, and there are often great deals available when departing from Oslo.
Norwegian, by the way, is always a good starting point when searching for connections to Oslo.
Shanghai: Air China Business Class Starting at €1,348 From Oslo
New York: Starting at NOK 2,076 / €207 from Oslo with Oneworld Carriers (Hand Luggage Only)
Singapore: €381 from Billund, €422 from Oslo with Turkish Airlines
Kahului, Hawaii: €397 / NOK 3,915 from Norway with Skyteam (€500 incl. luggage)
New York: €222 nonstop flights from Oslo, €226 from Stockholm with SAS (only carry-on)
Krabi, Thailand: €297 from Scandinavia with Norwegian Air (only carry-on)