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MidAmerica St. Louis Airport is adding an addition that will nearly double its footprint to serve a large increase in travelers using the airport.

Airport figures reveal there is a 376 percent increase in MidAmerica travelers from 2015-2019.

The airport’s projected volume for 2021 is more than 340,000 travelers.

The $30 million construction project is adding 41,000 square feet to the 53,000-square-foot airport in Mascoutah, IL that opened in 1997.

Rumors are that there will be new and expanded service for existing and newcomer airlines such as a Allegiant and Breeze.

Read: Project to Expand Terminal at MidAmerica St. Louis Airport Advances Following Receipt of More than $6 Million in Federal Grant Funding

Read: Holland Construction Doubling Size of MidAmerica St. Louis Airport