Flying vs Driving: The Real Risk Comparison
2 min read
The short answer
Mile for mile, flying is about 100 times safer than travelling by car. It feels the other way round because we feel in control when driving, and rare aviation stories get far more coverage. Often, the drive to the airport is the riskiest part of the trip.
It Feels Backwards — Because It Is
Most people feel safer in a car than on a plane. The numbers say the opposite. Understanding why our gut gets this wrong is one of the best tools for easing flight anxiety.
What the Data Shows
US research comparing ways to travel (Savage, 2013) found that flying is roughly 100 times safer per mile than travelling by car or light truck.
Per trip, it's just as reassuring. A 2024 MIT study by Arnold Barnett looked at airlines in the US, EU, Australia, Canada, Japan and similar countries. More than 79,999,999 of every 80 million boardings ended safely.
Why We Get It Wrong
- News coverage. Rare aviation stories get days of worldwide coverage. Road incidents happen every day and barely make the local news.
- Vivid stories feel common. We judge risk by how easily we can recall examples, and dramatic aviation stories stick in the mind.
- Feeling in control. We feel safer driving because we're in charge, even though the actual risk is higher.
- Familiarity. Driving is everyday; flying isn't. Unfamiliar things feel riskier.
The Drive to the Airport
Here's a helpful way to think about it: the drive to the airport carries more risk than the flight. By the time you board, you've already done the riskiest part of your journey.
Still Improving
Aviation's rate of safety events has fallen by about two-thirds over the past two decades. Road safety has improved much more slowly, so the gap keeps growing in flying's favour.
Using This Knowledge
Knowing the numbers won't switch off the fear straight away, because fear comes from a different part of the brain than logic. But going over accurate facts again and again gradually changes how your brain sees the risk. Over time, the gap between what you know and what you feel gets smaller.
Sources
- Savage (2013), Comparing safety across US transportation modes, Research in Transportation Economics 43(1)
- MIT News, Study: Flying keeps getting safer (Aug 2024): https://news.mit.edu/2024/study-flying-keeps-getting-safer-0807
- National Safety Council, Injury Facts (2024 data)