Frontier AirlinesDepart05:01
Fri, Nov 20ATL → STL
5h 43m · 1 stop
$155one way, per person
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- Cheapest fare
- $155
- Cheapest month
- November
- Direct flights
- Not recently
- Quickest trip
- 5h 43m
Frontier Airlines · Fri, Nov 20
from $155
Usually 1+ stop
750 km
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Cheapest month to fly from Atlanta to St Louis
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in November 2026
The lowest fares we've seen for each day, cheapest first.
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About flights from Atlanta to St Louis
Atlanta (ATL) and St Louis (STL) are about 750 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 5h 43m. Over the next few months, one-way fares start from $155, and November 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from Atlanta to St Louis?
The cheapest one-way fare we've seen recently is $155 with Frontier Airlines, departing Friday, November 20, 2026.
What is the cheapest month to fly from Atlanta to St Louis?
November 2026 currently has the lowest fares, from $155 one way.
Are there direct flights from Atlanta to St Louis?
We haven't seen direct fares recently, so most journeys include at least one stop.
How long is the flight from Atlanta to St Louis?
The quickest journey we've seen takes about 5h 43m. Atlanta and St Louis are around 750 km apart.
Which airlines fly from Atlanta to St Louis?
Recent fares on this route were with Frontier Airlines.
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