The airline was originally founded as JetSuiteX in April 2016. According to
chief executive officer (CEO)
Alex Wilcox, the air carrier was created in response to declining short-haul traffic and the rise in fares on short-haul flights in the United States. Wilcox attributes these phenomena in part to long wait times in airports. On August 8, 2019, JetSuiteX re-branded to JSX. In September 2020, Orange County Board of Supervisors notified JSX that the airline would be barred from operating flights to
John Wayne Airport in
Orange County, California, starting January 1, 2021. Wilcox publicly addressed the situation through emails and social media, and a customer outreach program invited fliers to voice support for the carrier to continue its flights to Orange County. On December 23, 2020, the airline was granted a
temporary restraining order against the airport, preventing airport officials from terminating the airline's operations on the planned date of January 1, 2021. A spokeswoman told a news outlet that the airport will comply with the order. JSX continues to operate from the airport. On December 15, 2022, JSX began operating flights to
Taos Regional Airport in
Taos, New Mexico, from various airports in Texas and California on behalf of
Taos Air. Taos Air effectively terminated operations permanently in April 2024, and on April 23, 2024, the town of Taos approved a new, exclusive airline service contract directly with JSX. On July 8, 2025, Travel + Leisure named JSX the #1 Domestic Airline for the second year in a row. JSX surpassed the #2 airline, Hawaiian, by 12 points. Both years, JSX scored in the 90s on a scale of 1 to 100, a feat for any US carrier. == Corporate affairs ==