$104 Cheap American Airlines flights St. Louis (STL) to Charleston (CHS)

Landing cheap one-way American Airlines flights from STL to CHS from $104 on Expedia couldn't be easier --- just filter by "Price (lowest to highest)." Alternatively, check out our affordable return fares from $207 for your next adventure.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

For cheap American Airlines fares from Lambert-St. Louis Intl. Airport (STL) to Charleston Intl. Airport (CHS), start searching one to three months before your intended departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also impact the price you pay. Sunday is typically the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.

Search American Airlines's earliest flights from STL to CHS by using our "Early Morning" and "Morning" filters. Not only will you arrive sooner, early departures also experience 20% fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.