Though traditionally more expensive when compared with the other means of transportation, air travel is becoming increasingly common due to more competitive prices. Every provincial capital has its own airport, and there are many others, particularly in tourist areas such as Bariloche and El Calafate (see list of airports in Argentina). Most companies have several daily flights to the most popular destinations, and daily or less frequent flights to other destinations. Since 2003, the Ministry of The Interior and Transport has overseen numerous construction works throughout the country's airports, ranging from the building of new terminals to extending the lengths of runways and improving radar systems.