Expect security screening at STL to take 5-10 minutes off-peak. Check real-time wait times online before heading to the airport.

Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $77 (Cheapflightsfares) |
One-way from | $28 (Kiwi.com) |
Popular in | January |
Cheapest in | July |
Average price | $253 |
Good round-trip deal | $249 or less |
Good one-way deal | $143 or less |
Fly from
Fly to
Route
Depart
Return
Price
St. LouisAtlanta
STL - ATL
STLATL
Lambert-St Louis
Thu 2/19
10:11 pm-1:04 pm
1 stop13h 53m
Atlanta Hartsfield-Jackson
Mon 2/23
6:00 am-6:51 am
Nonstop1h 51m
St. LouisAtlanta
STL - ATL
STLATL
Lambert-St Louis
Wed 2/18
10:13 am-12:49 pm
Nonstop1h 36m
Atlanta Hartsfield-Jackson
Tue 2/24
10:15 am-11:02 am
Nonstop1h 47m
St. LouisAtlanta
STL - ATL
STLATL
Lambert-St Louis
Wed 1/14
1:10 pm-8:35 pm
1 stop6h 25m
Atlanta Hartsfield-Jackson
Wed 1/21
8:40 am-9:30 am
Nonstop1h 50m
St. LouisAtlanta
STL - ATL
STLATL
Lambert-St Louis
Wed 1/7
5:55 pm-8:30 pm
Nonstop1h 35m
Atlanta Hartsfield-Jackson
Tue 1/13
11:20 am-4:30 pm
1 stop6h 10m
St. LouisAtlanta
STL - ATL
STLATL
Lambert-St Louis
Tue 1/13
1:10 pm-8:35 pm
1 stop6h 25m
Atlanta Hartsfield-Jackson
Tue 1/20
12:00 pm-12:45 pm
Nonstop1h 45m
St. LouisAtlanta
STL - ATL
STLATL
Lambert-St Louis
Wed 1/14
7:10 am-9:55 am
Nonstop1h 45m
Atlanta Hartsfield-Jackson
Thu 1/15
8:05 am-8:53 am
Nonstop1h 48m
St. LouisAtlanta
STL - ATL
STLATL
Lambert-St Louis
Thu 1/8
3:45 pm-6:25 pm
Nonstop1h 40m
Atlanta Hartsfield-Jackson
Tue 1/20
11:10 am-11:54 am
Nonstop1h 44m
St. LouisAtlanta
STL - ATL
STLATL
Lambert-St Louis
Thu 1/29
5:42 pm-7:14 am
1 stop12h 32m
Atlanta Hartsfield-Jackson
Sun 2/1
10:56 pm-9:21 am
1 stop11h 25m
St. LouisAtlanta
STL - ATL
STLATL
Lambert-St Louis
Thu 1/8
6:05 am-11:05 am
1 stop4h 00m
Atlanta Hartsfield-Jackson
Tue 1/20
12:00 pm-12:45 pm
Nonstop1h 45m
St. LouisAtlanta
STL - ATL
STLATL
Lambert-St Louis
Tue 3/3
7:10 am-9:55 am
Nonstop1h 45m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars |
To ensure you get the cheapest price possible for a flight from St. Louis to Atlanta, you should look to book at least 65 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Currently, December is the cheapest month in which you can book a flight from St. Louis to Atlanta (average of $64). Flying from St. Louis to Atlanta in May is currently the most expensive (average of $225). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
It’s typically best to fly out from St. Louis to Atlanta in the morning. Doing so could potentially save you 23% on the flight price compared to flying in the afternoon, which is usually more expensive.
Travelers seeking maximum savings on their St. Louis to Atlanta flight should consider departing on Thursday at noon when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Food
Entertainment
Overall
Comfort
Crew
Boarding
Reviews
Thomas,Dec 2025
SEA - DEN
Food
Entertainment
Overall
Comfort
Crew
Boarding
Reviews
Thomas,Dec 2025
SEA - DEN
Food
Entertainment
Overall
Comfort
Crew
Boarding
Reviews
Thomas,Dec 2025
SEA - DEN
Food
Entertainment
Overall
Comfort
Crew
Boarding
Reviews
Thomas,Dec 2025
SEA - DEN
Food
Entertainment
Overall
Comfort
Crew
Boarding
Reviews
Thomas,Dec 2025
SEA - DEN
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$74 | Average$150 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$184 | Average$311 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$188 | Average$307 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$206 | Average$294 | FlexibilityNo cancel fee | On-time71% |