Oslo can be easily reached by a number of transportation methods: planes, buses, trains, boats, etc. (see VisitOslo for details). There are three airports (one large and two small):

• Oslo airport Gardermoen (OSL): the largest airport, where most airlines fly to. Approximately 20 minutes from the city centre (with the airport train which costs NOK170), or 45 minutes on the bus (NOK130). Be aware that taking a taxi from the airport can be very expensive, especially with evening/night rates, and will also take much longer than the airport train.
• Sandefjord airport Torp: located on the west side of the city. Approximately 1,5 hours on the bus.
• Moss airport Rygge: located on the east side of the city. Approximately 1,5 hours on the bus.