The airline launched service out of Mid-America in November with an agreement to fly for at least six months.
Trans-Meridian extended that deal through September 6 because of strong sales, and now it says it will keep flying out of southwestern Illinois through January 6.
Trans-Meridian currently flies on Wednesdays, Fridays and Sundays to the Orlando area.
The Syracuse, New York based airline also provides services from Rockford to Las Vegas and Florida.
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