Commercial flying is extraordinarily safe. In 2023, the death rate for air passengers in the United States was 0.003 per 100 million passenger miles, a number so small it rounds to zero. For cars and trucks over the same period, that rate was 0.53, making driving roughly 175 times more deadly mile for mile. The global accident rate for the 12 months ending June 2025 was 1.23 per million flights, and the vast majority of those accidents involved no fatalities at all.
How Flying Compares to Driving and Rail
The gap between air travel and road travel is not subtle. In 2023, there were 20 fatalities on U.S. commercial aircraft, while tens of thousands of people died in car crashes during the same year. Passenger rail falls between the two, with a fatality rate of 0.01 per 100 million passenger miles. So even trains, widely considered safe, carry a measurably higher fatality risk per mile than commercial planes.
One reason the comparison feels counterintuitive is that plane crashes are catastrophic and highly visible when they happen. A single crash can kill hundreds and dominate news cycles for weeks. Car accidents, by contrast, kill people in ones and twos across thousands of locations every day, generating far less attention per death. Your brain naturally treats vivid, dramatic events as more likely than they are.
Why the Accident Rate Keeps Falling
Commercial aviation’s safety record is not luck. It’s the product of overlapping systems designed so that no single failure can bring down a plane. Federal regulations require that flight-critical systems, like hydraulics and electronics, be either physically separated within the aircraft or shielded so that one event cannot knock out both the primary and backup system simultaneously. If an engine fails, the other engine can sustain flight. If one hydraulic line is damaged, a redundant line routed through a different part of the fuselage takes over.
Aircraft designers must also account for structural movement during emergencies. Components are built with enough flexibility to handle at least six inches of displacement in any direction from a single-point force, preventing cascading failures when the airframe is stressed. These requirements exist at the design stage, long before a plane ever carries a passenger.
Maintenance on a Strict Schedule
Every commercial aircraft cycles through increasingly thorough inspections on a fixed schedule. The lightest check, called an A check, happens roughly every 400 to 600 flight hours. Technicians inspect the hull, cabin interior, engines, and emergency equipment, typically finishing in about 10 working hours at a hangar.
C checks go much deeper. They pull the aircraft out of service for one to two weeks and require up to 6,000 labor hours. Technicians examine load-bearing structures on the fuselage and wings, looking for corrosion and hidden damage that wouldn’t show up in routine walkarounds.
The most intensive inspection, the D check or “heavy maintenance visit,” happens every 6 to 10 years. The aircraft is essentially taken apart. Inspectors examine every structural component, repair or replace anything showing wear, and reassemble the plane over four to six weeks, logging 30,000 to 50,000 labor hours in the process. No other mode of transportation undergoes anything remotely this rigorous.
Pilot Training Requirements
In the United States, earning a commercial pilot certificate requires a minimum of 250 hours of logged flight time for airplane ratings. But that’s just the entry point. Airline pilots flying for major carriers under Part 121 regulations typically need 1,500 hours before they can serve as a first officer. Once hired, they undergo recurrent training in full-motion simulators, practicing engine failures, severe weather, system malfunctions, and emergency landings on a regular cycle. They also hold medical certificates that must be renewed periodically, confirming they meet vision, cardiovascular, and neurological standards.
Turbulence: Uncomfortable but Rarely Dangerous
Turbulence is the thing most passengers actually worry about, and it’s worth separating the discomfort from the danger. Between 2009 and 2021, a total of 30 passengers and 116 crew members were seriously injured by turbulence across all U.S. commercial flights. That spans billions of individual passenger trips. The injuries that do occur almost always happen to people who are unbuckled when the plane hits an unexpected pocket of rough air, which is why keeping your seatbelt fastened while seated, even when the sign is off, is one of the few things you can do to make a safe activity even safer.
Crew members are injured at a higher rate than passengers largely because their jobs require them to be standing and moving through the cabin during flight. For a seated, belted passenger, the risk from turbulence is close to zero.
Cabin Air Quality
If your concern is less about crashing and more about breathing recirculated air in a sealed tube, the engineering is reassuring here too. Most U.S. commercial aircraft use HEPA filters in their recirculation systems that capture 99.97% of airborne particles, the same standard used in hospital operating rooms. The cabin air supply is roughly a 50/50 mix of fresh air bled from outside the engines and recirculated, filtered air. The total volume of cabin air is fully replaced every two to three minutes on most widebody jets, giving commercial cabins a faster air exchange rate than most office buildings.
What “Safe” Actually Means in Practice
No form of transportation has zero risk, and commercial aviation does have fatal accidents. The Jeju Air crash in South Korea in December 2024 was a stark reminder that catastrophic events still occur. But the global fatality risk reported by IATA for the first half of 2025 was 0.24 per million flights, meaning you could board a million randomly selected commercial flights and expect roughly one of them to involve a fatal outcome for someone on board. The 12-month rolling average is even lower at 0.17.
To put that in everyday terms: if you flew once a day, every day, it would take thousands of years on average before you’d be on a flight with a fatal accident. The risk is not zero, but it is as close to zero as any routine human activity gets. Commercial flying is, by a wide margin, the safest way to cover long distances.