Cheap Flights from Austin-Bergstrom to St Louis from $239

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Flight deals from Austin-Bergstrom to St Louis

Looking for a cheap last-minute deal or the best return flight from Austin-Bergstrom Airport to St Louis Airport? If you want to travel next month, return fares start from $239. Find the lowest prices on one-way and return tickets right here.

St Louis.$239 per passenger.Departing Mon, 4 May, returning Fri, 8 May.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Austin-Bergstrom on Mon, 4 May, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Fri, 8 May, arriving in Austin-Bergstrom.Price includes taxes and charges.From $239, select.

St Louis.$273 per passenger.Departing Tue, 26 May, returning Tue, 2 Jun.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Austin-Bergstrom on Tue, 26 May, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Tue, 2 Jun, arriving in Austin-Bergstrom.Price includes taxes and charges.From $273, select.

St Louis.$308 per passenger.Departing Mon, 27 Apr, returning Thu, 30 Apr.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Austin-Bergstrom on Mon, 27 Apr, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Thu, 30 Apr, arriving in Austin-Bergstrom.Price includes taxes and charges.From $308, select.

St Louis.$345 per passenger.Departing Mon, 27 Apr, returning Fri, 1 May.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Austin-Bergstrom on Mon, 27 Apr, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Fri, 1 May, arriving in Austin-Bergstrom.Price includes taxes and charges.From $345, select.

St Louis.$359 per passenger.Departing Thu, 30 Jul, returning Tue, 4 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Austin-Bergstrom on Thu, 30 Jul, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Tue, 4 Aug, arriving in Austin-Bergstrom.Price includes taxes and charges.From $359, select.

St Louis.$364 per passenger.Departing Sat, 16 May, returning Tue, 19 May.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Austin-Bergstrom on Sat, 16 May, arriving in St Louis.Inbound direct flight with Southwest Airlines departs from St Louis on Tue, 19 May, arriving in Austin-Bergstrom.Price includes taxes and charges.From $364, select.

St Louis.$366 per passenger.Departing Wed, 17 Jun, returning Wed, 24 Jun.Return flight with Delta.Outbound indirect flight with Delta, departs from Austin-Bergstrom on Wed, 17 Jun, arriving in St Louis.Inbound indirect flight with Delta, departs from St Louis on Wed, 24 Jun, arriving in Austin-Bergstrom.Price includes taxes and charges.From $366, select.

St Louis.$382 per passenger.Departing Thu, 30 Apr, returning Mon, 4 May.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Austin-Bergstrom on Thu, 30 Apr, arriving in St Louis.Inbound direct flight with Southwest Airlines departs from St Louis on Mon, 4 May, arriving in Austin-Bergstrom.Price includes taxes and charges.From $382, select.

St Louis.$393 per passenger.Departing Thu, 6 Aug, returning Sun, 9 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Austin-Bergstrom on Thu, 6 Aug, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Sun, 9 Aug, arriving in Austin-Bergstrom.Price includes taxes and charges.From $393, select.

St Louis.$420 per passenger.Departing Fri, 29 May, returning Mon, 1 Jun.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Austin-Bergstrom on Fri, 29 May, arriving in St Louis.Inbound direct flight with Southwest Airlines departs from St Louis on Mon, 1 Jun, arriving in Austin-Bergstrom.Price includes taxes and charges.From $420, select.

St Louis.$434 per passenger.Departing Sun, 12 Jul, returning Wed, 15 Jul.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Austin-Bergstrom on Sun, 12 Jul, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Wed, 15 Jul, arriving in Austin-Bergstrom.Price includes taxes and charges.From $434, select.

St Louis.$458 per passenger.Departing Fri, 6 Nov, returning Sun, 8 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from Austin-Bergstrom on Fri, 6 Nov, arriving in St Louis.Inbound indirect flight with Delta, departs from St Louis on Sun, 8 Nov, arriving in Austin-Bergstrom.Price includes taxes and charges.From $458, select.

St Louis.$460 per passenger.Departing Tue, 1 Dec, returning Mon, 7 Dec.Return flight with Delta.Outbound indirect flight with Delta, departs from Austin-Bergstrom on Tue, 1 Dec, arriving in St Louis.Inbound indirect flight with Delta, departs from St Louis on Mon, 7 Dec, arriving in Austin-Bergstrom.Price includes taxes and charges.From $460, select.

St Louis.$466 per passenger.Departing Thu, 10 Sep, returning Sun, 13 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Austin-Bergstrom on Thu, 10 Sep, arriving in St Louis.Inbound indirect flight with Delta, departs from St Louis on Sun, 13 Sep, arriving in Austin-Bergstrom.Price includes taxes and charges.From $466, select.

St Louis.$568 per passenger.Departing Fri, 23 Oct, returning Sun, 25 Oct.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Austin-Bergstrom on Fri, 23 Oct, arriving in St Louis.Inbound indirect flight with Southwest Airlines, departs from St Louis on Sun, 25 Oct, arriving in Austin-Bergstrom.Price includes taxes and charges.From $568, select.

St Louis.$610 per passenger.Departing Tue, 28 Apr, returning Thu, 30 Apr.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Austin-Bergstrom on Tue, 28 Apr, arriving in St Louis.Inbound direct flight with Southwest Airlines departs from St Louis on Thu, 30 Apr, arriving in Austin-Bergstrom.Price includes taxes and charges.From $610, select.

Find the cheapest month to fly from Austin-Bergstrom to St Louis

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Austin-Bergstrom to St Louis flights are currently cheapest in May.

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Direct flights from Austin-Bergstrom to St Louis

Austin-Bergstrom to St Louis: Alternative routes

Compare routes from Austin-Bergstrom to St Louis below. You may find an airport to fly into that's cheaper, faster, or easier than St Louis.

Austin to St Louis: Flight information

The things to know before you go.

Cheapest flight found	$239
Cheapest month to fly	May
Average flight time	2 hrs, 5 mins
Most popular airline	Southwest Airlines
Average flights per week	20

Finding cheap flights from Austin-Bergstrom to St Louis: Frequently asked questions

How long does it take to fly from Austin-Bergstrom to St Louis?

2 hours and 5 minutes is the average flight time from Austin-Bergstrom to St Louis.

Which airlines fly direct from Austin-Bergstrom to St Louis?

Southwest Airlines flies direct from Austin-Bergstrom to St Louis.

How many flights are there a week from Austin-Bergstrom to St Louis?

As of April 2026, there are 20 flights per week flying from Austin-Bergstrom to St Louis.

When is the cheapest time to fly from Austin-Bergstrom to St Louis?

The cheapest month to fly from Austin-Bergstrom to St Louis is usually May.

Can I get a direct flight from Austin-Bergstrom Airport to St Louis Airport?

Yes – the average flight time is 2 hours and 5 minutes.

How can I find the best flight deal to St Louis?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to St Louis but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to St Louis?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to St Louis is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Austin-Bergstrom Airport to St Louis with?

Currently, Frontier Airlines and Southwest Airlines offer the cheapest flight tickets to St Louis.

Travelling from Austin-Bergstrom International Airport (AUS) to Lambert-St. Louis International Airport (STL): what you need to know

Around 2 hours 5 minutes is how long you can expect to be travelling on a direct flight from Austin-Bergstrom International Airport to Lambert-St. Louis International Airport.
Austin and St Louis share the same timezone, UTC-5.
Each week, there are 13 Austin-Bergstrom International Airport to Lambert-St. Louis International Airport flights. If you prefer to get going early, go for the 05:00 Southwest Airlines flight. If you'd rather make the most of your day before you fly, the latest flight is at 18:35 with Southwest Airlines.
Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for hassle-free flying. Get to the airport on time to catch your AUS to STL flight.
Flying during a peak time such as July? School holidays and other popular periods can mean longer queues and delays at airport checkpoints. Play things extra safe and arrive up to four hours before an international flight and two hours before domestic departures.
Southwest Airlines is your gateway to discovering St Louis (and maybe even some other great parts of United States!). Browse the direct flights from Austin-Bergstrom International Airport to Lambert-St. Louis International Airport offered by this popular carrier.
The majority of travellers choose to travel with Southwest Airlines on this route.
Southwest Airlines leads the way as the most punctual carrier for AUS to STL flights, with 83.33% of services arriving as scheduled.
If you'd like to break up your flight, simply deselect 'Direct flights only' when searching for your ticket from Austin-Bergstrom International Airport to Lambert-St. Louis International Airport. These are the top stopovers between AUS and STL:
- George Bush Intercontinental Airport
- Dallas/Fort Worth International Airport
- Tulsa International Airport

How to find the cheapest flights from Austin-Bergstrom International Airport (AUS) to Lambert-St. Louis International Airport (STL)

Right now, $129 is the lowest price we've found for a one-way Austin-Bergstrom International Airport to Lambert-St. Louis International Airport flight. The best price for a return ticket is $239. Keep in mind that fares may change due to availability when booking.
Book nine months before travelling. After crunching the numbers on our calendar, this is how far you should book ahead to secure cheap tickets from AUS to STL.
August is the cheapest month for flights from Austin-Bergstrom International Airport to Lambert-St. Louis International Airport. If you want to travel at a different time of year, the 'Whole month' tool will show you the lowest prices across every month.
You won't have to check back in every day to find out if fares have dropped when you set up a Price Alert. We'll let you know as soon as the price changes on cheap flights from AUS to STL.
Find the perfect flight for you with the help of the filters. To see the 'Best,' 'Cheapest' or 'Fastest' flights from Austin-Bergstrom International Airport to Lambert-St. Louis International Airport, use the 'Sort by' tool. You can also filter results by departure and arrival times, airline, and number of stops.

Handy information about Austin-Bergstrom International Airport (AUS)

AUS's address is 3600 Presidential Blvd.
Austin-Bergstrom International Airport gets top marks for on-time performance. 81.23% of flights that depart AUS arrive at their destination on time.
Austin-Bergstrom International Airport is about 19 kilometres from central Austin. If you're driving, ride-sharing or catching a cab from the centre, it'll take you 25 minutes or so to get there, depending on the traffic.
Expect a journey time of roughly 3 hours 25 minutes when using public transport.
Get your break off to a stress-free start by staying near AUS. Whether you're taking an early flight from Austin-Bergstrom International Airport to Lambert-St. Louis International Airport or just don't like being rushed, these stays are the answer:

Arriving at Lambert-St. Louis International Airport (STL)

If you're arriving on a late Austin-Bergstrom International Airport to Lambert-St. Louis International Airport flight, nothing beats the convenience of being near the terminal. Collect your bags from the carousel and then be showered and snoozing not long after at one of these options near STL:
Travel at your own speed with a Lambert-St. Louis International Airport rental car. Pick up your wheels from Hertz, Budget or Alamo and experience more of St Louis and beyond.
Reserving your vehicle from Lambert-St. Louis International Airport around one week ahead increases your chances of getting a good deal.

Getting from Lambert-St. Louis International Airport (STL) to central St Louis

STL is located at 10701 Lambert International Blvd..
From Lambert-St. Louis International Airport, St Louis is approximately 26 kilometres away. It takes around 20 minutes to get to the centre driving.
It takes around 35 minutes to get there using public transport.

When to fly to Lambert-St. Louis International Airport (STL)

The quietest month for a flight from Austin-Bergstrom International Airport to Lambert-St. Louis International Airport is April, while July is the most popular. Pick the ideal time to visit St Louis based on whether you prefer a faster pace or a more relaxed vibe.
The warmest month in St Louis is July, with the temperature ranging between 17ºC and 33ºC. Lock in your flights from Austin-Bergstrom International Airport to Lambert-St. Louis International Airport in this month if this is the kind of weather you like.
January has average temperatures of between -8ºC and 7ºC. Search for cheap tickets from AUS to STL around that time if you want to travel when it's cooler.

Explore more of United States

St Louis has plenty to offer, but there are so many other corners of United States waiting to be explored. Around 418 kilometres north-east of St Louis, a visit to Chicago will fill your itinerary to the brim. Start with popular sights like Millennium Park, Art Institute of Chicago and LandShark Beer Garden at Navy Pier.
Around 370 kilometres east of St Louis, Indianapolis is another essential stop in United States. Experience major highlights starting with The Children's Museum of Indianapolis, Indianapolis Museum of Art and Indianapolis Zoo.