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Killeen

$344+ 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 5/28. Fares are subject to change and may not be available on all flights or dates of travel.
STL — GRK
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
1 adult, Economy
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Cheap 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 March 10, 2026.

This American Airlines deal was found by Cheapflights users on 3/10. 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.
Thu 5/288:36 am
STL
-
GRK
1 stop6h 01m
American Airlines
Sun 5/317:21 pm
GRK
-
STL
1 stop4h 37m
American Airlines
Deal found 3/10$344
This American Airlines deal was found by Cheapflights users on 3/9. 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 4/95:20 am
STL
-
GRK
1 stop4h 15m
American Airlines
Wed 4/155:00 am
GRK
-
STL
1 stop6h 37m
American Airlines
Deal found 3/9$370
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Sat 6/67:20 pm
STL
-
GRK
1 stop4h 18m
American Airlines
Mon 6/83:07 pm
GRK
-
STL
1 stop4h 29m
American Airlines
Deal found 3/9$494

Find 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 March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$344
(American Airlines)
Provider with most accurate pricing for Lambert-St Louis-Killeen Fort Hood Regional flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Killeen Fort Hood Regional flights.
Search Deals
From Lambert-St Louis to Killeen Fort Hood Regional
Search Deals

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 March 10, 2026.
Use the filters below to find and compare flights from St. Louis to Killeen that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisKilleen

STL - GRK

STLGRK

Lambert-St Louis

Thu 5/28

8:36 am-2:37 pm

1 stop6h 01m

Killeen Fort Hood Regional

Sun 5/31

7:21 pm-11:58 pm

1 stop4h 37m

$344

St. LouisKilleen

STL - GRK

STLGRK

Lambert-St Louis

Thu 4/9

5:20 am-9:35 am

1 stop4h 15m

Killeen Fort Hood Regional

Wed 4/15

5:00 am-11:37 am

1 stop6h 37m

$370
Quickest round-trip

St. LouisKilleen

STL - GRK

STLGRK

Lambert-St Louis

Sat 6/6

7:20 pm-11:38 pm

1 stop4h 18m

Killeen Fort Hood Regional

Mon 6/8

3:07 pm-7:36 pm

1 stop4h 29m

$494
Cheapest one-way
Quickest one-way

St. LouisKilleen

STL - GRK

STLGRK

Lambert-St Louis

Sat 3/28

5:30 pm-9:45 am

2 stops16h 15m

$782

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/8

Sorted by cheapest first

Compare providers for flights from St. Louis to Killeen

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Killeen in March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Killeen flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Killeen flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Killeen flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Killeen flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Killeen flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, September is the cheapest month in which you can book a flight from St. Louis to Killeen (average of $162). Flying from St. Louis to Killeen in March is currently the most expensive (average of $258). 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 March 10, 2026.
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
7.1
Good
11,414 reviews

Crew

7.9

Food

6.4

Boarding

7.5

Comfort

7.2

Entertainment

6.9

Overall

7.1

Reviews

1 / 20
8.0
Excellent

Monica,Nov 2025

JAC - DFW

At least there was an option of entertainment on this flight.
American Airlines
7.1
Good
11,414 reviews
American Airlines
7.1
Good
11,414 reviews

Crew

7.9

Food

6.4

Boarding

7.5

Comfort

7.2

Entertainment

6.9

Overall

7.1

Reviews

1 / 20
8.0
Excellent

Monica,Nov 2025

JAC - DFW

At least there was an option of entertainment on this flight.

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 6h 01m. 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 $196.

  • 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, September is the cheapest month in which you can book a flight from St. Louis to Killeen (average of $162). Flying from St. Louis to Killeen in March is currently the most expensive (average of $258). 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 March 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$196Average$318FlexibilityNo cancel feeOn-time71%

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