United Airlines Faces Lawsuit Over New Route to McClellan-Palomar

A new lawsuit has emerged as United Airlines prepares to launch two new routes from McClellan-Palomar Airport in Carlsbad, California, scheduled to commence on March 31, 2026. Local residents, represented by the group Citizens For A Friendly Airport, have filed suit against San Diego County, alleging that the county failed to conduct necessary environmental studies before approving United’s plans. The routes will connect McClellan-Palomar Airport to Denver International Airport and San Francisco International Airport, with two daily flights for each destination.

This legal challenge comes on the heels of a similar lawsuit against the county regarding a new route launched by American Airlines, which began operations from McClellan-Palomar to Phoenix in February 2025. The ongoing contention primarily revolves around the suitability of the Embraer E175 aircraft, which is deemed by residents to be too large and noisy for the regional airport.

Details of United Airlines’ New Routes

United Airlines plans to utilize the 76-seat Embraer E175 for its upcoming flights, operated by SkyWest Airlines under the United Express brand. These two routes will significantly enhance connectivity for the Carlsbad community, providing access to major hubs in the United States and beyond. Denver serves as a key airline hub with extensive connections throughout the country as well as high connectivity to both Canada and Latin America. Similarly, San Francisco is a crucial gateway for travel to Asia and Oceania.

Previously, McClellan-Palomar Airport offered limited services primarily from Advanced Air and JSX, which operated smaller aircraft. The introduction of United’s service is expected to increase travel options for residents, allowing for greater ease in reaching a variety of destinations.

Legal Challenges Surrounding Airport Operations

The lawsuit filed by Citizens For A Friendly Airport argues that San Diego County did not adequately assess the environmental impact of regularly scheduled commercial services at McClellan-Palomar Airport. This marks the group’s third legal action against the county in recent years. Their first lawsuit, launched in 2018, focused on the airport’s master update, where the court upheld the county’s decisions but required amendments to the airport’s noise analysis.

The recent lawsuit against American Airlines centered on the same Embraer E175 aircraft type, which was claimed to be incompatible with the airport’s infrastructure due to its size, wingspan, and approach speed. The residents contend that the noise produced by the E175 is higher than that of smaller aircraft that typically operate from the airport.

Currently, American Airlines operates its Phoenix route with up to four daily flights using the same aircraft model. The ongoing litigation, which has gained the support of the city of Carlsbad, highlights growing concerns regarding noise and environmental impacts associated with increased air traffic at McClellan-Palomar Airport.

As United Airlines prepares to expand its service offerings, the outcomes of these legal challenges could significantly shape the future of commercial aviation in Carlsbad and the surrounding areas.