Commercial air travel became common in the late 1950s and 1960s, when jet airliners slashed flight times and made flying practical for ordinary travelers. But “common” depends on what you mean. Scheduled passenger service existed as early as the late 1920s, and by 1971, about half of American adults had flown at least once. The full story spans roughly four decades of gradual shifts, from mail planes carrying a couple of passengers to a deregulated industry that put air travel within reach of most households.
The 1920s and 1930s: Airlines Built on Airmail
The earliest commercial airlines in the United States weren’t really in the passenger business. They were in the mail business. The U.S. government awarded contracts to carry airmail, and the revenue from those contracts made it financially possible to operate routes. Passengers were almost an afterthought. Boeing Air Transport, founded in 1927 to fly mail from Chicago to San Francisco, used the Boeing 40A, an airplane that could carry exactly two passengers alongside its mail cargo.
That airmail revenue attracted serious money. By the early 1930s, four large aviation holding companies dominated American skies. William Boeing and Frederick Rentschler of Pratt & Whitney formed United Aircraft and Transport Corporation, the biggest of the group. Boeing Air Transport merged with Pacific Air Transport, Varney Air Lines, and National Air Transport, and by 1931 they were all operating as United Air Lines. Other holding companies, backed by figures like Averill Harriman and Robert Lehman, built competing networks. The infrastructure of commercial aviation was taking shape, but flying remained expensive, uncomfortable, and limited to a small slice of the population. Through the 1930s and into World War II, air travel was a luxury reserved for the wealthy and well-connected.
The Postwar Boom: Flying Gets Faster and Bigger
World War II transformed aviation technology. Military investment produced more powerful engines, longer-range aircraft, and thousands of trained pilots who returned to civilian life looking for work. Airlines expanded rapidly through the late 1940s and 1950s using pressurized propeller aircraft like the Douglas DC-6 and Lockheed Constellation, which could fly above bad weather and carry dozens of passengers in relative comfort. Airlines began offering different classes of service on the same flight: some cabins configured as first class, others as tourist class, sometimes separated only by a partition.
This was the period when flying shifted from exotic to aspirational. More Americans could afford a ticket, and airlines marketed aggressively to attract them. But propeller planes were still slow. A transatlantic crossing from New York to London took 14 to 16 hours, and domestic flights involved multiple fuel stops. Flying was faster than a train, but it wasn’t yet fast enough or cheap enough to replace other forms of long-distance travel for most people.
The Jet Age Changes Everything
The real turning point came in 1958, when the Boeing 707 entered commercial service. The 707 could cruise at 575 miles per hour with a range of about 3,400 nautical miles, enough to fly nonstop from New York to London. That transatlantic trip, which had taken more than 18 hours on propeller aircraft (including stops), dropped to under 7 hours. Overnight, international travel became something you could do in a single day rather than planning around.
The impact went beyond speed. Jets were more reliable, required less maintenance per flight hour, and carried more passengers. Airlines could offer more seats on more routes at lower cost per mile. Through the 1960s, jet service expanded to domestic routes across the country. By 1971, 49% of American adults had flown at least once in their lifetime, and 21% had flown in the previous 12 months. That’s a remarkable number considering that just two decades earlier, flying had been a novelty for most families. By 1977, the share who had ever flown jumped to 63%, and a quarter of adults were flying in any given year.
Deregulation Made Flying Affordable
Before 1978, the federal government controlled which airlines could fly which routes and how much they could charge. The Civil Aeronautics Board set fares, and competition on price was essentially illegal. Airlines competed on service instead, which kept the experience pleasant but tickets expensive.
The Airline Deregulation Act of 1978 changed the economics of flying. Airlines were free to set their own fares, enter new markets, and compete directly on price. The results were dramatic. Real fare levels declined steadily after deregulation. Airlines increased the number of seats in their aircraft to spread costs across more passengers, and new low-cost carriers entered the market to serve price-sensitive travelers. Routes that had been uneconomical under the old system became viable as airlines experimented with hub-and-spoke networks, filling planes more efficiently.
This is the period when air travel went from common to ubiquitous. By 1997, 81% of American adults had flown at least once, and 39% were flying in a given year. The most recent data, from 2023, shows 86% of U.S. adults have flown at least once and nearly half flew in the past 12 months.
A Timeline of “Common”
The answer to “when did commercial air travel become common” depends on your threshold:
- 1930s: Scheduled airline service existed, but fewer than a million Americans flew each year. Flying was rare and expensive.
- Late 1950s: Jet airliners made flying fast and practical. This is when air travel started becoming a normal part of middle-class life, at least for business travelers and vacationers willing to spend.
- 1970s: A majority of American adults had flown at least once. Air travel was common in the sense that most people had direct experience with it.
- 1980s and 1990s: Deregulation drove prices down and passenger numbers up. Flying became routine, something millions of Americans did multiple times a year.
If you’re looking for a single decade, the 1960s is the strongest answer. That’s when jet travel, growing airline networks, and rising middle-class incomes converged to make flying a mainstream experience rather than a luxury. But the process was gradual. It took from the late 1920s to the late 1990s for air travel to go from a two-passenger mail plane to an industry carrying more than 80% of the adult population.