Planes do fly over Antarctica, but the frequency of commercial flights over the continent is relatively low compared to other regions. There are a few reasons for this:

1. Lack of Infrastructure: Antarctica is a remote and inhospitable continent with limited infrastructure to support regular commercial flights. There are no permanent airports or developed air transportation facilities in most areas of Antarctica. The harsh climate, extreme temperatures, and challenging terrain make it difficult to establish and maintain regular air travel infrastructure.
2. Restricted Access: Antarctica is governed by the Antarctic Treaty System, an international agreement that regulates human activity on the continent. The treaty restricts commercial exploitation and promotes scientific research and environmental protection. These restrictions limit the number of flights and impose specific requirements and regulations for those seeking to operate in the region.
3. Limited Demand: The demand for commercial flights to Antarctica is relatively low compared to other destinations. The majority of visitors to Antarctica are scientists, researchers, and tourists on specialized expedition cruises. The cost, logistical challenges, and limited attractions for mass tourism contribute to the lower demand for commercial flights.
4. Long Distances and Remote Locations: Commercial airlines typically prioritize routes with high passenger demand and efficient connections. Given the remote location of Antarctica and the long distances involved, direct flights from populated areas to Antarctica would require significant fuel, time, and resources. This makes such flights less commercially viable for most airlines.

It’s worth noting that there are charter flights, specialized research flights, and occasional tourist flights that operate over Antarctica. These flights provide opportunities for scientists, researchers, and tourists to experience the unique landscapes and environment of the continent. However, they remain relatively infrequent compared to other global air routes.