The statement that flying is the safest form of travel is a fact, and there is a lot of data to back this claim up. According to IATA Aviation Safety, "Aviation is the safest form of long-distance transport. In 2018, the all-accident rate (measured in accidents per 1 million flights) was 1.35, which was the equivalent of one accident for every 740,000 flights." The article explains that in order to experience a 100% fatal accident on a plane, a person would have to travel by air every day for 16,581 years. This data ultimately proves that flying is significantly safer than any alternative form of transportation.
Source: iata.org/en/youandiata/traverlers/aviation-safety/