Founded in 1979 by Allen Weh, CSI provides air charter and aviation services to corporations, and government agencies.

CSI Aviation was founded in 1979 by Allen Weh, a now retired colonel in the United States Marine Corps Reserve.

In 2016, CSI's Part 135 division added Medical Flight Services, which is accredited by the National Accreditation Alliance Medical Transport Applications (NAAMTA)[4] In September 2017, CSI deployed a Seeker Aircraft to Southeast Texas in support of the Hurricane Harvey relief efforts.

[6] CSI Aviation was certified by the U.S. Military Commercial Airlift Review Board (CARB) in 2018 to operate on-demand passenger, cargo and air medical flights for the U.S. Defense Department (DOD) [7] In 2019, CSI was awarded a position on a $5.7 billion contract to provide worldwide airlift services for the US Department of Defense (DoD).

In 2020, CSI was tasked by U.S. Health and Human Services to airlift almost two thousand passengers from a cruise ship docked in Oakland, CA due to an outbreak of COVID-19.