Cheap Flights from St. Louis (STL) to Sumter (SUM)

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Sumter, SC (SUM-Sumter Municipal)

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Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Sumter, SC (SUM-Sumter Municipal) cost?
Secure a cheap one-way flight or cheap return flight from Lambert-St. Louis Intl. Airport (STL) to Sumter, SC (SUM-Sumter Municipal) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Sumter, SC (SUM-Sumter Municipal)?
Planning your trip for is a good way to save, as it's the cheapest month for flights between STL and SUM. You'll usually find the lowest fares during off-peak months.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Sumter, SC (SUM-Sumter Municipal)?
Use the filter tool on Expedia to compare different airlines and find the cheapest carrier that'll take you from STL to SUM. Then, sort your results by "Price (lowest to highest)" to snap up the best deal available.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Sumter, SC (SUM-Sumter Municipal)?
Direct flights from Lambert-St. Louis Intl. Airport (STL) to Sumter, SC (SUM-Sumter Municipal) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from STL to SUM?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary based on a number of factors, including the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Sumter, SC (SUM-Sumter Municipal)?
Select a flight from Lambert-St. Louis Intl. Airport (STL) to Sumter, SC (SUM-Sumter Municipal) that takes off before 3 PM to reduce the risk of cancellations. Later departures 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 Lambert-St. Louis Intl. Airport (STL) to Sumter, SC (SUM-Sumter Municipal) last-minute?
Waiting until right before your break to book your flight from STL to SUM generally means paying more. While you may find some last-minute discounts, they're not always guaranteed. Be flexible with your itinerary for a better chance of scoring a bargain.
Is it cheaper to book a STL to SUM flight and hotel package?
Booking a STL to SUM 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. Pick from our impressive range of accommodations and then add car rentals, activities and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Sumter, SC (SUM-Sumter Municipal)?
Generally, it's possible to cancel or reschedule your STL to SUM flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Sumter Municipal
Distance
645 mi

Book with confidence

Book with confidence

St. Louis to Sumter Flights

The cheapest times to fly from St. Louis to Sumter

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 St. Louis to Sumter are during the month of . You can find some of the cheapest flights from St. Louis to Sumter with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from St. Louis to Sumter: 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 St. Louis to Sumter

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 St. Louis to Sumter 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 St. Louis to Sumter 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 St. Louis to Sumter 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.

 

St. Louis to Sumter Flights

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