The Real Cost of Short Flights: How Driveable Routes Are Polluting the Skies

When it comes to pollution, aviation often gets a pass in everyday conversations. Most of the attention tends to focus on cars or factories. But air travel — especially short, regional flights — quietly contributes a massive amount of CO₂ and other greenhouse gases into the atmosphere. And here’s the kicker: a lot of these flights cover distances that could easily be driven, with a much smaller carbon footprint.

Let’s start with the basics. Airplanes burn jet fuel, which emits carbon dioxide — a lot of it. According to the Environmental Protection Agency (EPA), aircraft are responsible for about 9-12% of all U.S. transportation-related greenhouse gas emissions. Globally, aviation accounts for roughly 2.5% of total CO₂ emissions, but the impact is much larger when you include other climate effects like contrails and nitrogen oxides emitted at high altitudes.

The most wasteful flights, by far, are short-haul routes — say, anything under 500 miles. These flights are highly inefficient because the most fuel-intensive parts of flying are takeoff and landing. So, on a one-hour flight from Los Angeles to Las Vegas (about 270 miles), the emissions per passenger are shockingly high. According to research from the International Council on Clean Transportation (ICCT), a short flight like this can emit around 150-250 kg of CO₂ per person — compared to around 60-80 kg for someone making the same trip by car (assuming solo driving in a fuel-efficient vehicle). If multiple people share the car, that number drops even further per person.

The problem is made worse by the sheer number of short flights. In the U.S., there are thousands of daily departures for distances under 500 miles — many of which overlap with existing train or highway infrastructure. We’re not just talking about business travelers either; many people choose to fly purely for the convenience of skipping a few hours on the road. And while understandable, it adds up. Fast.

One of the most frustrating aspects of all this is that many of these routes have viable alternatives. High-speed rail in other countries has dramatically reduced the need for domestic flights — take France, where the government banned certain short flights if the same trip could be made by train in under 2.5 hours. The U.S. doesn’t have the same rail network, but for many routes — like Boston to New York, or San Francisco to Los Angeles — driving or taking a bus or train is not only possible, it’s sometimes just as fast when you factor in airport security, boarding, and delays.

Of course, not all air travel can or should be replaced. But in a time when we’re facing record-breaking heat, wildfires, and rising sea levels, reconsidering how we travel — especially when the alternative is a relatively simple drive — is one of the more accessible changes individuals can make.

It’s not about guilt-tripping people. It’s about being aware. If you can drive, take the train, or even carpool — and it makes sense — consider skipping that quick flight. The planet will thank you for it, even if your boarding pass doesn’t.