ATL → STL

Find and Compare the Cheapest Ways to Fly from Atlanta to St. Louis

Compare one-way, round-trip and flight + hotel packages from Atlanta to St. Louis, a nonstop flight of about 1h 30m, with fares from around 115. Nonstop fares seen from Southwest.

Atlanta to St. Louis flight facts

Atlanta to St. Louis is a domestic route covering about 484 miles, arriving at St. Louis Lambert International Airport (STL) in United States. Peak travel season in St. Louis runs June–August (mild, long sunny days), while November–March is usually the quietest and best-value time to visit. Nonstop fares we've tracked on this route come from Southwest.

Key facts for flights from Atlanta to St. Louis
Departing fromHartsfield-Jackson Atlanta International Airport (ATL)
Arriving atSt. Louis Lambert International Airport (STL)
Distance484 miles (779 km)
Nonstop flight timeAbout 1h 30m
Nonstop airlines seenSouthwest
Round-trip fares from$115 (estimate)
Cheapest monthsFebruary, October, April
Peak season in St. LouisJune–August
Cheapest hotel months in St. LouisNovember–March
Best time to book1 to 3 months ahead
Route info updatedOctober 16, 2026

When to visit St. Louis

  • Peak season

    June–August

    Mild, long sunny days

  • Shoulder season

    April–May & September–October

    Cool and crisp, fewer crowds

  • Off-peak season

    November–March

    Cold, damp and grey

Estimated round-trip fares by month, Atlanta to St. Louis

Estimated lowest round-trip fare per month
MonthFares from
January$135
February$115
March$145
April$125
May$150
June$165
July$175
August$165
September$125
October$120
November$155
December$180

Flying from Atlanta to St. Louis

Airlines Flying this Route

Nonstop fares we've tracked on this route come from Southwest. Ducoffs.com compares full-service and low-cost airlines flying between Atlanta and St. Louis in a single search, including nonstop and one-stop options, so you can weigh price against total travel time.

Best Time to Book Flights from Atlanta to St. Louis

Fares on this route tend to be lowest in February, October, and April. For the best selection, book about 1 to 3 months before departure and stay flexible by a day or two.

Average Travel Duration

Atlanta and St. Louis are about 484 miles apart. A nonstop flight takes roughly 1h 30m; connecting itineraries usually add 2 to 5 hours.

Atlanta to St. Louis flight questions

How can I find the absolute cheapest flight from Atlanta to St. Louis?

The best way to secure budget rates is by comparing multiple airlines simultaneously and checking flexible dates. Ducoffs.com scans available partner networks to bring you real-time pricing options.

What is the cheapest month to fly from Atlanta to St. Louis?

Based on typical seasonal demand, February, October, and April tend to offer the lowest fares on this route, with estimated round-trip prices starting around $115. Live prices change daily, so run a search for your exact dates.

How long is the flight from Atlanta to St. Louis?

Atlanta and St. Louis are about 484 miles apart. A nonstop flight takes roughly 1h 30m, while connecting itineraries usually add 2 to 5 hours depending on the layover.

Which airlines fly nonstop from Atlanta to St. Louis?

Recent nonstop fares we've tracked on this route come from Southwest. Schedules change by season, so your live search shows every airline flying your dates.

When are hotels cheapest in St. Louis?

Hotel rates in St. Louis are usually lowest in November–March, when demand is quieter, and highest during peak season (June–August). Booking your flight and hotel together can save up to 30%.

Which airport do I fly into for St. Louis?

This route arrives at St. Louis Lambert International Airport (STL). Your search results also show nearby airports when they offer a cheaper or faster option.

How far in advance should I book a flight to St. Louis?

For this route, booking about 1 to 3 months before departure usually gives the best balance of price and seat selection. Mid-week departures are often cheaper than weekend flights.

Is it cheaper to bundle flights and hotels together?

Yes. Bundling your travel components can save you up to 30% compared to booking flights and hotels separately, as airlines and properties offer exclusive package discounts.