$96 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, May 22 - Fri, May 29
AUS
Austin-Bergstrom Intl.
STL
Lambert-St. Louis Intl.
$714 Roundtrip, found 3 days ago
$714
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Fri, May 22 from Austin-Bergstrom Intl. to Lambert-St. Louis Intl., returning Fri, May 29, priced at $714 found 3 days ago

Airfares from $96 One Way, $191 Round Trip from Killeen to St. Louis

Prices starting at $191 for return flights and $96 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.

Wed, Jun 10 - Wed, Jun 17
AUS
Austin
STL
St. Louis
$191 Roundtrip, found 21 hours ago
$191
Roundtrip
found 21 hours ago
Select United flight, departing Wed, Jun 10 from Austin to St. Louis, returning Wed, Jun 17, priced at $191 found 21 hours ago
Tue, Aug 4 - Tue, Aug 11
AUS
Austin
STL
St. Louis
$191 Roundtrip, found 3 days ago
$191
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Aug 4 from Austin to St. Louis, returning Tue, Aug 11, priced at $191 found 3 days ago
Fri, Jul 10 - Tue, Jul 14
AUS
Austin
STL
St. Louis
$200 Roundtrip, found 5 days ago
$200
Roundtrip
found 5 days ago
Select United flight, departing Fri, Jul 10 from Austin to St. Louis, returning Tue, Jul 14, priced at $200 found 5 days ago
Tue, Aug 4 - Tue, Aug 11
AUS
Austin
STL
St. Louis
$204 Roundtrip, found 3 days ago
$204
Roundtrip
found 3 days ago
Select United flight, departing Tue, Aug 4 from Austin to St. Louis, returning Tue, Aug 11, priced at $204 found 3 days ago
Mon, Jun 1 - Sat, Jun 13
AUS
Austin
STL
St. Louis
$204 Roundtrip, found 2 days ago
$204
Roundtrip
found 2 days ago
Select American Airlines flight, departing Mon, Jun 1 from Austin to St. Louis, returning Sat, Jun 13, priced at $204 found 2 days ago

St. Louis economy flight packages

Price found within the past 48 hours. Click for updated prices.
The Knight Center at Washington University
2.5-star property

The Knight Center at Washington University

9.4/10 Exceptional! (541 reviews)

Jun 18 - Jun 21

3 night stay

Austin (AUS) to St. Louis (STL)

American Airlines • Non-stop roundtrip • Coach
Price was $637, price is now $518 per person
$518
per person
found 1 day ago
Very nice lobby restaurant and bar

Reviewed on Sep 15, 2025

Angad Arts Hotel St. Louis, Tapestry Collection by Hilton
4.0-star property

Angad Arts Hotel St. Louis, Tapestry Collection by Hilton

8.8/10 Excellent! (1,071 reviews)

Jun 18 - Jun 21

3 night stay

Austin (AUS) to St. Louis (STL)

American Airlines • Non-stop roundtrip • Coach
Price was $705, price is now $571 per person
$571
per person
found 1 day ago
The room was clean and well stocked, and the red, very vivid!

Reviewed on May 12, 2026

The Cheshire
4.0-star property

The Cheshire

8.8/10 Excellent! (1,016 reviews)

Jun 18 - Jun 21

3 night stay

Austin (AUS) to St. Louis (STL)

American Airlines • Non-stop roundtrip • Coach
Price was $677, price is now $549 per person
$549
per person
found 1 day ago
It was a lovely, British literature themed hotel with wonderful decor and amenities. Would highly recommend and stay again when in the St louis area.

Reviewed on May 4, 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

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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.