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Cheap flights from Killeen to St. Louis from $510

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Killeen to St. Louis departing on 3/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Killeen to St. Louis

Cheap round-trip flights

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Multiple Airlines Logo
GRK
-
STL
678 mimulti-stop
Multiple Airlines Logo
STL
-
GRK
678 mimulti-stop
Multiple Airlines

American Airlines flights from Killeen to St. Louis

Our best American Airlines deals on Killeen to St. Louis flight tickets
American Airlines
Mar 24
GRK7:00 amKilleen Fort Hood Regional
3h 59m
1 stop
STL10:59 amLambert-St Louis
Mar 25
STL5:12 amLambert-St Louis
6h 14m
1 stop
GRK11:26 amKilleen Fort Hood Regional
$861
American Airlines
Mar 24
GRK10:15 amKilleen Fort Hood Regional
7h 43m
2 stops
STL5:58 pmLambert-St Louis
Mar 25
STL5:12 amLambert-St Louis
6h 14m
1 stop
GRK11:26 amKilleen Fort Hood Regional
$1,024
American Airlines
Mar 24
GRK10:15 amKilleen Fort Hood Regional
7h 43m
2 stops
STL5:58 pmLambert-St Louis
Mar 25
STL10:33 amLambert-St Louis
11h 30m
2 stops
GRK10:03 pmKilleen Fort Hood Regional
$1,187

momondo Fare Finder

 
Customize your flight search to find flights from Killeen to St. Louis 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, momondo users made 832,500 searches. Data last updated March 22, 2026.
Use the filters below to find and compare flights from Killeen to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest one-way
Quickest one-way

KilleenSt. Louis

GRK - STL

GRKSTL

Killeen Fort Hood Regional

Sun 3/29

7:00 am-10:59 am

1 stop3h 59m

$510

KilleenSt. Louis

GRK - STL

GRKSTL

Killeen Fort Hood Regional

Sun 3/29

3:59 pm-11:44 pm

2 stops7h 45m

$515

KilleenSt. Louis

GRK - STL

GRKSTL

Killeen Fort Hood Regional

Sun 4/5

11:56 am-3:19 pm

3 stops51h 23m

$1,169

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to St. Louis from

How to get the cheapest flight ticket from Killeen to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Killeen Fort Hood Regional to Lambert-St Louis?

American Airlines is the most popular carrier operating from Killeen Fort Hood Regional to Lambert-St Louis

What airlines fly to St. Louis?

Southwest, American Airlines and United Airlines are the top three most popular airlines that fly to St. Louis from Killeen according to our data. Southwest is the first choice among our users, with 79% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 4 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

When to book flights from Killeen to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Killeen to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Killeen to St. Louis (GRK to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Killeen to St. Louis

Fastest flight time

3h 59m

Direct flights

None
The fastest flight from Killeen to St. Louis takes 3h 59m
There are no direct flights from Killeen to St. Louis. There are no popular flight routes from Killeen to St. Louis.
Search flight deals

  • How far is Killeen Fort Hood Regional to Lambert-St Louis by plane?

    Lambert-St Louis is 670.9 mi away from Killeen Fort Hood Regional. A reasonable flight in good conditions will take 3h 59m.

  • When did momondo last update prices for flights from Killeen Fort Hood Regional Airport to Lambert-St Louis Airport?

    Prices for flights from Killeen Fort Hood Regional Airport to Lambert-St Louis Airport are updated daily.

  • How many operators does momondo search for flights from Killeen Fort Hood Regional Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Killeen Fort Hood Regional Airport to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Killeen Fort Hood Regional Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Killeen to St. Louis?

Best airlines flying from Killeen to St. Louis

Compare and see reviews for airlines that fly from Killeen to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $290Free CancellationRating
7.1
11,488 reviews
Search American Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
Collinsville
St. Peters
Wentzville
Alton
Fenton
Farmington
Clayton
Festus
Edwardsville
Eureka
Litchfield
Shrewsbury
Grafton

Why use momondo?

Why should I use momondo to find a flight deal from Killeen to St. Louis?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Killeen to St. Louis for you.

Can I find flights from Killeen to St. Louis with flexible booking policies on momondo?

momondo does allow users to show only those flights to St. Louis from Killeen which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Killeen to St. Louis?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to St. Louis from Killeen.

I’m not ready to book a flight from Killeen to St. Louis right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Killeen to St. Louis now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to St. Louis and let you know when they change.

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