Cheap Flights from Charleston (CHS) to St. Louis (CPS)

Popular airlines from Charleston Intl. Airport (CHS) to St. Louis, MO (CPS-St. Louis Downtown)

Alternative airports near St. Louis

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $468
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $468

Frequently asked questions

How much does a flight from Charleston Intl. Airport (CHS) to St. Louis Downtown Airport (CPS) cost?
Secure a cheap one-way flight or cheap return flight from Charleston Intl. Airport (CHS) to St. Louis Downtown Airport (CPS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Charleston Intl. Airport (CHS) to St. Louis Downtown Airport (CPS)?
The cheapest month to fly from CHS to CPS is , when there's less demand. Off-peak months are typically when you'll find lower airfares between these airports.
What is the cheapest airline that flies from Charleston Intl. Airport (CHS) to St. Louis Downtown Airport (CPS)?
To find the cheapest airline that'll fly you from CHS to CPS, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Charleston Intl. Airport (CHS) to St. Louis Downtown Airport (CPS)?
You'll need to catch a flight with a layover if you're traveling from Charleston Intl. Airport (CHS) to St. Louis Downtown Airport (CPS). Direct flights don't operate daily on this route. However, just filter your search to include one or two stops to find the best option for your trip.
What day of the week has the most flights from CHS to CPS?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Charleston Intl. Airport (CHS) to St. Louis Downtown Airport (CPS)?
Choose a flight from Charleston Intl. Airport (CHS) to St. Louis Downtown Airport (CPS) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures after this time have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Charleston Intl. Airport (CHS) to St. Louis Downtown Airport (CPS) last-minute?
Booking your plane ticket from CHS to CPS just before your getaway is generally more expensive. However, if you're flexible with your departure times and dates, you could bag a cheap last-minute fare.
Is it cheaper to book a CHS to CPS flight and hotel package?
Opting for a CHS to CPS flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Choose from our extensive range of accommodations and then add activities, flights and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Charleston Intl. Airport (CHS) to St. Louis Downtown Airport (CPS)?
In most cases, you can modify or cancel your CHS to CPS flight. However, additional charges may apply, especially if your booking was made over 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you'd like further details, head to our Customer Service portal.

Travel information

Origin airport
Charleston Intl.
Destination airport
St. Louis Downtown
Distance
689 mi

Book with confidence

Charleston to St. Louis Flights

The cheapest times to fly from Charleston to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Charleston to St. Louis are during the month of . You can find some of the cheapest flights from Charleston to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Charleston to St. Louis

Sunday is one of the best days to book for cheap flights from Charleston to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Charleston to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Charleston to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Charleston to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Charleston to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Charleston to St. Louis Flights

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*Available to One Key members.