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Killeen

$311+ Cheap flights from St. Louis to Killeen (STL - GRK)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/24. Fares are subject to change and may not be available on all flights or dates of travel.
STL — GRK
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from St. Louis to Killeen

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Killeen (GRK). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$311
(American Airlines)
From Lambert-St Louis to Killeen Fort Hood Regional
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Find flight deals from St. Louis to Killeen

Cheapest flights from St. Louis to Killeen
Explore the most affordable flight options available from St. Louis to Killeen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:17 amSTL - GRK
1 stop4h 34mAmerican Airlines
Wed 12/3110:21 amGRK - STL
1 stop6h 49mAmerican Airlines
Deal found 9/10$311
This American Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/305:11 amSTL - GRK
1 stop6h 53mAmerican Airlines
Sat 11/12:48 pmGRK - STL
2 stops7h 20mAmerican Airlines
Deal found 9/9$316
This American Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/245:20 amSTL - GRK
1 stop4h 46mAmerican Airlines
Mon 11/105:05 amGRK - STL
1 stop3h 52mAmerican Airlines
Deal found 9/10$363
This American Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/292:15 pmSTL - GRK
2 stops8h 37mAmerican Airlines
Sun 11/26:53 pmGRK - STL
1 stop3h 36mAmerican Airlines
Deal found 9/11$368

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Killeen that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from St. Louis to Killeen that are best for you.

Fly from

St. Louis

Fly to

Killeen

Route

Depart

Return

Price

St. LouisKilleen

STL - GRK

STLGRK

Lambert-St Louis

Wed 12/24

5:17 am-9:51 am

1 stop4h 34m

Killeen Fort Hood Regional

Wed 12/31

10:21 am-5:10 pm

1 stop6h 49m

$311

St. LouisKilleen

STL - GRK

STLGRK

Lambert-St Louis

Thu 10/30

5:11 am-12:04 pm

1 stop6h 53m

Killeen Fort Hood Regional

Sat 11/1

2:48 pm-10:08 pm

2 stops7h 20m

$316

St. LouisKilleen

STL - GRK

STLGRK

Lambert-St Louis

Fri 10/24

5:20 am-10:06 am

1 stop4h 46m

Killeen Fort Hood Regional

Mon 11/10

5:05 am-8:57 am

1 stop3h 52m

$363

St. LouisKilleen

STL - GRK

STLGRK

Lambert-St Louis

Wed 10/29

5:20 am-12:04 pm

1 stop6h 44m

Killeen Fort Hood Regional

Sun 11/2

6:53 pm-10:29 pm

1 stop3h 36m

$363

St. LouisKilleen

STL - GRK

STLGRK

Lambert-St Louis

Sat 3/7

5:49 pm-11:24 pm

1 stop5h 35m

Killeen Fort Hood Regional

Wed 3/11

6:43 pm-10:24 pm

1 stop3h 41m

$431

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Best time to book a flight from St. Louis to Killeen

Have a flexible travel schedule? Discover the best time to fly to Killeen from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Killeen

What is the cheapest month to book a flight from St. Louis to Killeen?

Currently, January is the cheapest month in which you can book a flight from St. Louis to Killeen (average of $316). Flying from St. Louis to Killeen in December is currently the most expensive (average of $468). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Killeen

Get insights into the airlines that provide service to Killeen. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Killeen. Reviews last updated September 11, 2025.
Read reviews from past customers who have flown American Airlines from St. Louis to Killeen. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
10,000 reviews

Comfort

7.2

Overall

7.2

Boarding

7.5

Food

6.4

Crew

8.0

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2025

PIT - DFW

Due to gate changes,we nearly missed our flight. The gate agent reassigned our seats and would NOT give us our assigned seats,but she did honor that same request to the man who arrived after us. Her rudeness and difficulty was not appropriate.
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Comfort

7.2

Overall

7.2

Boarding

7.5

Food

6.4

Crew

8.0

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2025

PIT - DFW

Due to gate changes,we nearly missed our flight. The gate agent reassigned our seats and would NOT give us our assigned seats,but she did honor that same request to the man who arrived after us. Her rudeness and difficulty was not appropriate.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Killeen. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from St. Louis to Killeen?

    Departing from St. Louis to Killeen will take you 4h 34m. Airlines will cover a distance of 678 mi.

  • What is the cheapest airline to fly from St. Louis to Killeen round-trip?

    Flying on American Airlines is currently your cheapest option to Killeen, with prices starting at $290.

  • Can I find deals for flights from St. Louis to Killeen that include hotel bookings?

    Yes. In addition to deals on St. Louis to Killeen flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Killeen?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Killeen.

  • Can I find deals for business class flights from St. Louis to Killeen?

    Yes. Cheapflights offers flight deals from St. Louis to Killeen by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Killeen?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Killeen (average of $316). Flying from St. Louis to Killeen in December is currently the most expensive (average of $468). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Killeen?

Book flights to Killeen if you plan to visit one of these locations
Temple
Copperas Cove

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Top airline flying from St. Louis to Killeen

Discover the top airline that operate flights from St. Louis to Killeen. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$290Average$490FlexibilityNo cancel feeOn-time71%

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