Will Your Airport Have Fewer Flights in the Future?

Last month, I pointed out a growing trend in the U.S. airline industry toward "upgauging": replacing smaller planes with larger ones. Virtually every airline has become enamored with the potential cost benefits of switching to larger aircraft. They are almost always more fuel efficient and more labor efficient since they allow the airlines to spread costs over more potential passengers.

From a passenger perspective, the upgauging trend could lead to lower ticket prices if the airlines pass most or all of their cost savings through to customers. This would obviously be a nice benefit for consumers.

However, as the average plane size increases, airlines are likely to maintain capacity discipline by cutting back on the number of flights they offer. Small and medium cities are likely to bear the brunt of this industry shift, as airlines may offer fewer flights on larger planes rather than more frequent service on smaller aircraft. Consumers will be much less pleased with this change.

Unintended consequences?
As I detailed last month, virtually every major U.S. airline is participating in the upgauging trend. Some, like JetBlue Airways , are expanding their fleets with larger aircraft than they have previously flown. Others, including Alaska Air , are retrofitting existing planes to fit more seats onboard. Southwest Airlines is doing both of these things! Others, like Delta Air Lines , are buying larger planes to replace smaller ones that are being removed from service.

However, airlines will not be happy if they find that they need to drop ticket prices in order to fill their (larger) planes. This would jeopardize the return on investment for these aircraft. "Capacity discipline" has become a universal talking point for airline executives, and the industry as a whole has been fairly diligent about matching capacity to demand for the last several years.

There is only one way for airlines to keep overall capacity in check while the number of seats on each plane grows. They will need to cut down on the number of flights offered. While this would offer customers less choice, airlines will be drawn to this option by the need to limit capacity growth.

An example
Memphis is a city that has already been hit hard by this logic. When Delta and Northwest merged five years ago, the two offered a combined 238 daily departures from the Memphis hub. Today, that has been cut to just 94 daily departures. While Southwest recently announced plans to enter the Memphis market later this year with flights to five destinations, that is a small consolation for Memphis residents.

At an investor conference last fall, Glen Hauenstein, Delta's executive vice president for network planning and revenue management, explained the logic of downsizing in Memphis. Instead of running small regional jet flights from a city like Birmingham to both Memphis and Atlanta, Delta will in the future direct all of its traffic to the big Atlanta hub using larger planes. Offering fewer flights on larger planes is more cost-efficient for Delta.

Industry shake-up
As airline fleets converge toward larger planes, small cities will continue to see a reduction in flight options. Among the network carriers, smaller hub cities like Memphis, Cincinnati, and Cleveland are likely to see the biggest cutbacks. Low cost carriers may reduce frequencies for lower-traffic routes while fitting more passengers on each flight.

On the other hand, if you live in a large metropolitan area with a busy airline hub, such as New York, Chicago, Dallas, or Atlanta, you may see better flight options in the future. As capacity becomes more concentrated in the biggest markets, airlines will offer more flights on larger planes in those cities. This trend could lead to somewhat lower prices and more available itineraries.

Great transformation
The upgauging trend will take years to fully unfold, as airlines tend to replace only a small proportion of their fleets each year. However, by the end of the decade, today's small hubs may have disappeared, but large hubs will be even bigger, while accommodating larger planes (on average).

This shift will have the greatest effect on small-town America. Small cities which today have flights to several different hub airports will not be able to support as many flights on larger aircraft. Customers are therefore likely to have fewer choices in the future, with flights to just two or three big hubs becoming the norm. Unfortunately, this reduction in consumer choice may be the price of having a profitable airline industry.

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The article Will Your Airport Have Fewer Flights in the Future? originally appeared on Fool.com.

Motley Fool contributor Adam Levine-Weinberg has no position in any stocks mentioned. The Motley Fool recommends Southwest Airlines. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.

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