Southwest AirlinesDepart07:35
Fri, Nov 27AUS → STL
2h 00m · Direct
$120one way, per person
View deal
- Cheapest fare
- $120
- Cheapest month
- November
- Direct flights
- Yes
- Flight time
- 2h 00m
Southwest Airlines · Fri, Nov 27
from $120
Southwest Airlines
1,160 km
Get a price alert
We'll email you when Austin → St Louis drops to your price. It's free, and you can stop any time.
Today's cheapest fare is $120. We'll send one email to confirm. See our privacy policy.
Cheapest month to fly from Austin 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.
Southwest AirlinesPlan the rest of your trip to St Louis
Where to stay, what to do and getting around, from our travel partners.
About flights from Austin to St Louis
Austin (AUS) and St Louis (STL) are about 1,160 km apart. Direct flights take around 2h 00m, and recent direct fares were with Southwest Airlines. Over the next few months, one-way fares start from $120, 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 Austin to St Louis?
The cheapest one-way fare we've seen recently is $120 with Southwest Airlines, departing Friday, November 27, 2026.
What is the cheapest month to fly from Austin to St Louis?
November 2026 currently has the lowest fares, from $120 one way.
Are there direct flights from Austin to St Louis?
Yes. Recent direct fares were with Southwest Airlines.
How long is the flight from Austin to St Louis?
A direct flight takes about 2h 00m. Austin and St Louis are around 1,160 km apart.
Which airlines fly from Austin to St Louis?
Recent fares on this route were with Southwest Airlines.
More cheap flights from Austin
- Austin to New Yorkfrom $136
- Austin to Denverfrom $80
- Austin to Tampafrom $135
- Austin to Las Vegasfrom $60
- Austin to Chicagofrom $152
- Austin to Mexico Cityfrom $89
- Austin to Los Angelesfrom $177
- Austin to Cancunfrom $229
- Austin to Atlantafrom $180
- Austin to Washingtonfrom $138
- Austin to Phoenixfrom $171
- Austin to Orlandofrom $77