Colorado travel lines was founded in 1972 in Denver Colorado to compete with Greyhound America in the area. Starting with two second hand GMC New Look coaches, The company started to expand throughout the Rockies but couldn't push heavily into other states due to regulations

By 1979 CTL had a large fleet of depots, buses and coaches across colorado 

After deregulation in 1982, CTL expanded heavily into intercity coaches, launching their first non colorado depot and hub in Kansas City in 1983, with intercity routes across middle America taking off fast in the new age of competition 

In 1988 to reflect the new expansion Colorado Travel lines rebranded to American continental coachlines and established itself across America as a rival to greyhound

In 1994 after years of growth American continental placed a huge order for 800 MCI DL3 coaches which took until 2005 to be completed, with many being stainless steel and many being full panel framed. 

In 2008 the global financial crash caused a dramatic drop in services and fringe routes were cut and coaches sold

The company spent the next 10 years operating at a slim profit but unable to massively overhaul its fleet and upgrade coaches due to the heavy investment in the now aging DL3 fleets 

In 2015 Ryde Transport bought a minority share in the company and used it to start entering the US market alongside other companies it invested and bought.

In 2018 Ryde bought all remaining shares of American continental to allow its Landmark Coachlines brand to enter the US market.

That same year Ryde Landmark started investing in a new fleet and changing its operating capacity, moving it away from a continental intercity service to trunk routes and contract services. Selling its old DL3 steel sides and using the newer DL3s for contract work

In 2022 Landmark moved American Continental buses into its core intercity services and officially branded them as American Continental by Landmark

In 2024 American Continental by Landmark was merged into Landmark and the company was renamed American Charter, focusing solely on charter and contract work under the Landmark brand.

By 2025 all that is left are coaches branding American Charter liveries, while still retaining the Landmark operating logo