Cheap flights from Atlanta to St. Louis from $29
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Atlanta to St. Louis departing on 9/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Southwest flights from Atlanta to St. Louis
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Frontier flights from Atlanta to St. Louis
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How to get the cheapest flight ticket from Atlanta to St. Louis
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to St. Louis?
In general, June is the cheapest month to fly from Atlanta to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $238. The month of April is another great option to travel to St. Louis, with average flight prices from Atlanta averaging around $272.
What is the cheapest day to depart on your flight to St. Louis?
The cheapest day to depart on your flight to St. Louis is on a Thursday when prices can be found for as low as $308. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $386. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.
What is the cheapest time of day to depart on your flight to St. Louis?
Flying to St. Louis from Atlanta at noon is the least expensive time of day to depart. momondo users have found prices as low as $314 when looking at flights departing at noon. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $332 per ticket.
What is the cheapest Atlanta Hartsfield-Jackson to Lambert-St Louis flight route?
Fly from Atlanta Hartsfield-Jackson to Lambert-St Louis for the best Atlanta Hartsfield-Jackson - Lambert-St Louis flight prices
How far in advance should I book a flight to St. Louis?
You are more likely to see cheaper flights to St. Louis from Atlanta when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $298 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Atlanta for as low as $239 on momondo.
What cabin class options are available on Atlanta Hartsfield-Jackson to Lambert-St Louis flights?
There are 3 cabin classes available to choose from on Atlanta Hartsfield-Jackson to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Atlanta Hartsfield-Jackson to Lambert-St Louis?
Frontier, Spirit Airlines, and Southwest are the most popular carriers operating from Atlanta Hartsfield-Jackson to Lambert-St Louis
What airlines fly to St. Louis?
Delta, Southwest and Frontier are the top three most popular airlines that fly to St. Louis from Atlanta according to our data. Delta is the first choice among our users, with 53% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 6 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.
How many flights depart from Atlanta to St. Louis on average per day?
The number of flights available between Atlanta and St. Louis is 32 per day as of July 2025. The most frequent departure time is 3:00PM, with 43% of daily flights leaving in the evening.
How many flights depart from Atlanta to St. Louis on average per week?
The number of flights available between Atlanta and St. Louis is 229 per week as of July 2025. The most frequent departure day is Mon, with 20% of weekly flights leaving on this day.
When to book flights from Atlanta to St. Louis
Cheap Atlanta to St. Louis (ATL to STL) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Atlanta to St. Louis
How far is Atlanta Hartsfield-Jackson to Lambert-St Louis by plane?
Atlanta Hartsfield-Jackson and Lambert-St Louis are 466.6 mi apart from one another. Flights usually cover this in 1h 42m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Atlanta Hartsfield-Jackson Airport to Lambert-St Louis Airport?
Prices for flights from Atlanta Hartsfield-Jackson Airport to Lambert-St Louis Airport are updated daily.
How many operators does momondo search for flights from Atlanta Hartsfield-Jackson Airport to Lambert-St Louis Airport?
As of July 2025, there are 5 operators available to choose from for flights from Atlanta Hartsfield-Jackson Airport to Lambert-St Louis Airport.
How old do you have to be to fly from Atlanta Hartsfield-Jackson Airport to Lambert-St Louis Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Atlanta Hartsfield-Jackson Airport to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Atlanta to St. Louis?
momondo data reveals that the most frequently booked plane model on the route from Atlanta to St. Louis is Boeing 737-900, representing 18.44% of all bookings. The subsequent popular models are Boeing 737-700 Passenger/BBJ1 (winglets) at 14.16%, Boeing 737 MAX 8 at 11.20%, and Boeing 737-800 Passenger/BBJ2 (winglets) at 11.14%.
What is the most popular airline from Atlanta to St. Louis?
Based on momondo bookings for flights between Atlanta and St. Louis, the leading airline is Delta, making up 53% of the total bookings. Other popular airlines include Southwest with 31%, Frontier with 13%, and Southern / Mokulele with 3%.
Best airlines flying from Atlanta to St. Louis
Compare and see reviews for airlines that fly from Atlanta to St. Louis with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $102 | Free Cancellation | Rating 5.9 3,268 reviews | |||
| PriceFrom $133 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $193 | Free Cancellation | Rating 6.4 26 reviews | |||
| PriceFrom $197 | Free Cancellation | Rating 8.0 7,958 reviews | |||
| PriceFrom $215 | Free Cancellation | Rating 8.0 4,253 reviews |
Delta Flights From Atlanta to St. Louis
Across 29 Delta flights from Atlanta to St. Louis this week, the average price was $312, with the best Delta deals starting from $197 round-trip. 7,958 users have rated Delta on momondo, with an average score of 8.0/10.
Southwest Flights From Atlanta to St. Louis
The best Southwest deal for Atlanta to St. Louis flight tickets found on momondo in the last 72 hours was $215, round-trip. It should be noted that an average Southwest flight deal for this route in this time was higher, at $314 round-trip. Southwest operates 23 flights out of Atlanta into St. Louis in an average week, so prices vary by time and availability. 4,253 Southwest reviews by users on momondo have scored the airline at 8.0/10.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Atlanta to St. Louis?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis from Atlanta.
Can I find flights from Atlanta to St. Louis with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to St. Louis from Atlanta with this policy.
How can momondo help me find flights from Atlanta to St. Louis?
Once all potential Atlanta to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Atlanta to St. Louis right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to St. Louis from Atlanta. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.