This week, reports emerged regarding a potential merger between United Airlines and American Airlines. However, American Airlines has since confirmed that the reports are false.
The discussion followed broader consolidation arguments in the U.S. airline industry and comments from United Airlines CEO Scott Kirby about the efficiency of fewer, larger carriers.
A potential merger would have been significant for U.S. airports, as both airlines operate overlapping hub-and-spoke networks. When major airlines have merged in the past, network overlap has led to specific, measurable changes in airport operations.
A notable example is the 2013 merger between American Airlines and US Airways. After integration, the combined airline reduced duplication at overlapping hubs such as Charlotte, Phoenix, and Philadelphia, while strengthening Charlotte as a primary connecting hub. Phoenix retained hub status but saw long-haul international service become more limited compared to larger hubs.
Similarly, the 2010 merger between United and Continental led to network consolidation across hubs such as Cleveland and Houston. Cleveland, which had functioned as a Continental hub, was significantly reduced as connecting traffic shifted toward larger hubs like Newark, Chicago O’Hare, and Houston.
If a United–American merger took place, similar dynamics would likely be evaluated. Major hub airports for American Airlines such as Phoenix Sky Harbor, Chicago O’Hare, and Dallas Fort Worth could be reassessed against United’s hub network.
A reassignment or consolidation of hubs in a merged network would likely affect both airport operations and flight patterns. Airports that lose hub designation typically experience a reduction in connecting traffic, which can lead to fewer departures, reduced flight frequency on certain routes, and less wide-body international service.
Conversely, airports designated as primary hubs in the combined network may see increased traffic concentration, additional connecting banks of flights, and expanded long-haul service as airlines optimise schedules around fewer, higher-capacity connection points.
However, at present, these outcomes remain hypothetical. No merger agreement exists, and no regulatory process has begun.
