Cheap flights from St Louis to Austin

One-way fares from $180 · STL → AUS · prices found by travellers in the last 48 hours

Compare all dates Austin → St Louis
Cheapest fare
$180

Frontier Airlines · Fri, Nov 13

Cheapest month
November

from $180

Direct flights
Not recently

Usually 1+ stop

Quickest trip
4h 43m

1,160 km

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Cheapest month to fly from St Louis to Austin

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. November 2026 Cheapest $180

Cheapest dates in November 2026

The lowest fares we've seen for each day, cheapest first.

Frontier Airlines
Depart16:26 Fri, Nov 13STL → AUS 5h 26m · 1 stop
$180one way, per person
View deal
See every date in November 2026 →

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Getting around

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About flights from St Louis to Austin

St Louis (STL) and Austin (AUS) are about 1,160 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 4h 43m. Over the next few months, one-way fares start from $180, 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 St Louis to Austin?

The cheapest one-way fare we've seen recently is $180 with Frontier Airlines, departing Friday, November 13, 2026.

What is the cheapest month to fly from St Louis to Austin?

November 2026 currently has the lowest fares, from $180 one way.

Are there direct flights from St Louis to Austin?

We haven't seen direct fares recently, so most journeys include at least one stop.

How long is the flight from St Louis to Austin?

The quickest journey we've seen takes about 4h 43m. St Louis and Austin are around 1,160 km apart.

Which airlines fly from St Louis to Austin?

Recent fares on this route were with Frontier Airlines.

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