What was the first commercial airplane?

The first commercial airplane is generally considered to be the Douglas DC-3, which was introduced in 1936. It revolutionized air travel by being the first aircraft to offer scheduled airline services that were both reliable and profitable. The DC-3 could carry up to 32 passengers and was known for its speed, range, and comfort, setting a new standard in the aviation industry. Its success laid the groundwork for the future of commercial aviation.