$141 Cheap Flights from Augusta (AGS) to St. Louis (STL)

View $141 flight on Thu, Dec 25, 2025Opens in a new window

Popular airlines from Augusta Regional Airport (AGS) to St. Louis Lambert Intl. Airport (STL)

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Cheap Flights from Augusta to St. Louis (AGS-STL)

Prices were available within the past 7 days and start at $141 for one-way flights and $316 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, Dec 25 - Tue, Dec 30
AGS
Augusta
STL
St. Louis
$316 Roundtrip, found 7 hours ago
$316
Roundtrip
found 7 hours ago
Select Delta flight, departing Thu, Dec 25 from Augusta to St. Louis, returning Tue, Dec 30, priced at $316 found 7 hours ago
Delta
Thu, Nov 27 - Mon, Dec 1
AGS
Augusta
STL
St. Louis
$326 Roundtrip, found 18 hours ago
$326
Roundtrip
found 18 hours ago
Select Delta flight, departing Thu, Nov 27 from Augusta to St. Louis, returning Mon, Dec 1, priced at $326 found 18 hours ago
American Airlines
Thu, Dec 25 - Tue, Dec 30
AGS
Augusta
STL
St. Louis
$351 Roundtrip, found 7 hours ago
$351
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Thu, Dec 25 from Augusta to St. Louis, returning Tue, Dec 30, priced at $351 found 7 hours ago
Delta
Tue, Dec 16 - Thu, Dec 18
AGS
Augusta
STL
St. Louis
$354 Roundtrip, found 1 day ago
$354
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Dec 16 from Augusta to St. Louis, returning Thu, Dec 18, priced at $354 found 1 day ago
Delta
Tue, Dec 16 - Tue, Dec 23
AGS
Augusta
STL
St. Louis
$359 Roundtrip, found 1 day ago
$359
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Dec 16 from Augusta to St. Louis, returning Tue, Dec 23, priced at $359 found 1 day ago
American Airlines
Fri, Dec 12 - Sun, Dec 14
AGS
Augusta
STL
St. Louis
$359 Roundtrip, found 16 hours ago
$359
Roundtrip
found 16 hours ago
Select American Airlines flight, departing Fri, Dec 12 from Augusta to St. Louis, returning Sun, Dec 14, priced at $359 found 16 hours ago
Delta
Sun, May 31 - Mon, Jun 1
AGS
Augusta
STL
St. Louis
$361 Roundtrip, found 3 hours ago
$361
Roundtrip
found 3 hours ago
Select Delta flight, departing Sun, May 31 from Augusta to St. Louis, returning Mon, Jun 1, priced at $361 found 3 hours ago
Delta
Tue, Dec 16 - Thu, Dec 18
AGS
Augusta
STL
St. Louis
$364 Roundtrip, found 1 day ago
$364
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Dec 16 from Augusta to St. Louis, returning Thu, Dec 18, priced at $364 found 1 day ago
Delta
Tue, Sep 30 - Wed, Oct 15
AGS
Augusta
STL
St. Louis
$372 Roundtrip, found 3 days ago
$372
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Sep 30 from Augusta to St. Louis, returning Wed, Oct 15, priced at $372 found 3 days ago
American Airlines
Mon, Oct 6 - Thu, Oct 9
AGS
Augusta
STL
St. Louis
$373 Roundtrip, found 5 days ago
$373
Roundtrip
found 5 days ago
Select American Airlines flight, departing Mon, Oct 6 from Augusta to St. Louis, returning Thu, Oct 9, priced at $373 found 5 days ago

Find the cheapest month to fly from Augusta (AGS) to St. Louis (STL)

February is typically the cheapest month to fly

From $256 - $623 per traveler.

Frequently asked questions

How much does a flight from Augusta Regional Airport (AGS) to Lambert-St. Louis Intl. Airport (STL) cost?
Get a cheap one-way flight from $141 or cheap return flight from $316 from Augusta Regional Airport (AGS) to Lambert-St. Louis Intl. Airport (STL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Augusta Regional Airport (AGS) to Lambert-St. Louis Intl. Airport (STL)?
Traveling in December may help you find better deals, as it's the cheapest month for flights between AGS and STL. You'll often find the lowest fares during off-peak months.
What is the cheapest airline that flies from Augusta Regional Airport (AGS) to Lambert-St. Louis Intl. Airport (STL)?
To find the cheapest airline flying from AGS to STL, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Augusta Regional Airport (AGS) to Lambert-St. Louis Intl. Airport (STL)?
There are no daily nonstop flights available from Augusta Regional Airport (AGS) to Lambert-St. Louis Intl. Airport (STL). But you can book flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be on your way in no time at all.
What day of the week has the most flights from AGS to STL?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Augusta Regional Airport (AGS) to Lambert-St. Louis Intl. Airport (STL)?
To land at Lambert-St. Louis Intl. Airport (STL) on time, pick a flight that leaves Augusta Regional Airport (AGS) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Augusta Regional Airport (AGS) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Holding off until just before your trip to book your flight from AGS to STL generally means paying more. Although you may find some last-minute discounts, they're not always guaranteed. Keep your travel schedule open to boost your chances of landing a bargain.
Is it cheaper to book an AGS to STL flight and hotel package?
Opting for an AGS to STL flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Select from our extensive range of accommodations and then add flights, car rentals and activities 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 Augusta Regional Airport (AGS) to Lambert-St. Louis Intl. Airport (STL)?
In most instances, you can cancel or modify your AGS to STL flight. However, there may be additional fees, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you need further details, go to our Customer Service portal.

Travel information

Travel information

Origin airport
Augusta Regional
Destination airport
Lambert-St. Louis Intl.
Airlines serving
American Airlines, Delta
Roundtrip price
$315
Distance
597 mi

Book with confidence

Book with confidence

Augusta to St. Louis Flights

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

 

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

Sunday is one of the best days to book for cheap flights from Augusta 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 Augusta 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 Augusta to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $141 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 Augusta 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 Augusta 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.

 

Augusta to St. Louis Flights

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*Available to One Key members.