$68 Cheap flight deals from Killeen (ILE) to St. Louis (STL)

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This Weekend's Flight Deals from Killeen to St. Louis

This weekend's flight prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Sep 11 - Sun, Sep 13
AUS
Austin-Bergstrom Intl.
STL
Lambert-St. Louis Intl.
$322 Roundtrip, found 2 hours ago
$322
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Fri, Sep 11 from Austin-Bergstrom Intl. to Lambert-St. Louis Intl., returning Sun, Sep 13, priced at $322 found 2 hours ago

Airfares from $68 One Way, $205 Round Trip from Killeen to St. Louis

Prices starting at $205 for return flights and $68 for one-way flights to St. Louis were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Sep 24 - Sun, Sep 27
AUS
Austin
STL
St. Louis
$205 Roundtrip, found 5 days ago
$205
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Thu, Sep 24 from Austin to St. Louis, returning Sun, Sep 27, priced at $205 found 5 days ago
Thu, Oct 1 - Sun, Oct 4
AUS
Austin
STL
St. Louis
$214 Roundtrip, found 5 days ago
$214
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Thu, Oct 1 from Austin to St. Louis, returning Sun, Oct 4, priced at $214 found 5 days ago
Thu, Oct 1 - Sun, Oct 4
AUS
Austin
STL
St. Louis
$216 Roundtrip, found 5 days ago
$216
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Thu, Oct 1 from Austin to St. Louis, returning Sun, Oct 4, priced at $216 found 5 days ago
Fri, Nov 20 - Mon, Nov 23
AUS
Austin
STL
St. Louis
$230 Roundtrip, found 23 hours ago
$230
Roundtrip
found 23 hours ago
Select Frontier Airlines flight, departing Fri, Nov 20 from Austin to St. Louis, returning Mon, Nov 23, priced at $230 found 23 hours ago
Sun, Sep 27 - Thu, Oct 1
AUS
Austin
STL
St. Louis
$270 Roundtrip, found 5 days ago
$270
Roundtrip
found 5 days ago
Select United flight, departing Sun, Sep 27 from Austin to St. Louis, returning Thu, Oct 1, priced at $270 found 5 days ago

St. Louis economy flight packages

Price found within the past 48 hours. Click for updated prices.
The Cheshire
4.0-star property

The Cheshire

8.8/10 Excellent! (1,014 reviews)

Oct 17 - Oct 20

3 night stay

Austin (AUS) to St. Louis (STL)

Southwest Airlines • Roundtrip • Coach
Price was $662, price is now $537 per person
$537
per person
found 12 hours ago

Moonrise Hotel
4.0-star property

Moonrise Hotel

9/10 Wonderful! (2,031 reviews)

Oct 17 - Oct 20

3 night stay

Austin (AUS) to St. Louis (STL)

Southwest Airlines • Roundtrip • Coach
Price was $646, price is now $540 per person
$540
per person
found 12 hours ago
We loved our stay here. The area was nice and the staff were absolutely amazing.

Reviewed on Sep 7, 2026

The Royal Sonesta Chase Park Plaza St. Louis
4.5-star property

The Royal Sonesta Chase Park Plaza St. Louis

9.2/10 Wonderful! (1,025 reviews)

Oct 17 - Oct 20

3 night stay

Austin (AUS) to St. Louis (STL)

Southwest Airlines • Roundtrip • Coach
Price was $682, price is now $578 per person
$578
per person
found 12 hours ago
Great location and loved the upgrade. Slightly hard to use AC and TVs in the room. Would stay here again though!

Reviewed on Sep 7, 2026

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More About Flying To St. Louis from Killeen

Route Information for Flights from Killeen to St. Louis

Origin Airport IATA Code
ILE
Destination Airport IATA Code
STL
Distance
Direct Flight Airlines
Earliest Flight Arrival
Latest Flight Arrival

Killeen to St. Louis

It has never been easier to find cheap Killeen to St. Louis flights. Orbitz has some of the best deals around to save you more money on your flight, hotel, and vacation package for the trip you have been waiting for.

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Frequently asked questions

Are there non-stop flights from Killeen to St. Louis?
Get set to pack your suitcase, because there are two airlines that operate direct flights from Austin-Bergstrom Intl. Airport (AUS) to STL. You can book a seat with Southwest Airlines and American Airlines.
What is the shortest flight from Killeen to St. Louis?
If conditions are good and there are no delays, you could be touching down at STL from Killeen-Fort Hood Regional Airport in only 2 hours and 40 minutes. With such a quick flight time, think about taking just carry-on luggage.
What airlines fly from Killeen to St. Louis most frequently?
The airlines that fly frequently between Austin-Bergstrom Intl. Airport (AUS) and Lambert-St. Louis Intl. Airport (STL) include Southwest Airlines (WN). This popular option offers 60 flights on the route each month. Alternatively, book your favorite seat with American Airlines (AA). You'll have 34 monthly flights between Killeen and St. Louis to select from with this company.
What is the cheapest day of the week to fly?
Consider flying out early in the week to save on your airfare. Orbitz data from 2021 shows that Monday is the cheapest day to depart, followed by Tuesday. Saturday showed the highest average ticket prices likely because many travelers prefer to start their vacation on a weekend.
What is the cheapest month to fly?
We won't keep you guessing, according to Orbitz data from 2021, the cheapest month to fly is February. Perfect for those who need a weekend getaway, or just a break from it all in the shortest month of the year. Be aware that the most expensive time to fly is during the height of summer in July, and in the holiday month of December.*According to flight demand on Orbitz.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

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Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.