Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Missoula to Oslo as you normally would.
Missoula Johnson-Bell Field (MSO), located 5.5 mi from the city center, is the airport you fly out of when you book flights from Missoula to Oslo. 0 airlines have flights from Johnson-Bell Field to Oslo on a regular basis. Booking flights from Missoula Johnson-Bell Field to Oslo should not be difficult; the airport handles an average of 0 outbound flights to Oslo per day.
MSO stands for Missoula Johnson-Bell Field Airport, while OSL stands for Oslo Gardermoen Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry. This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are Oslo Sandefjord Airport (TRF), Fagernes Valdres Airport (VDB).