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Cheap flights from Killeen to St. Louis from $289

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Killeen to St. Louis departing on 10/2. 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

Find the cheapest flights from Killeen to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
12:47 pm - 6:04 pm-
5h 17m
American Airlines Logo
12:47 pm - 6:32 pm-
5h 45m
$289American Airlines
Fri, Oct 2 - Tue, Oct 6
American Airlines Logo
3:05 pm - 7:43 pm-
4h 38m
American Airlines Logo
5:42 am - 9:29 am-
3h 47m
$299American Airlines
Fri, Aug 28 - Fri, Sep 4
American Airlines Logo
5:00 am - 9:24 am-
4h 24m
American Airlines Logo
5:42 am - 9:29 am-
3h 47m
$300American Airlines
Fri, Aug 28 - Fri, Sep 4
American Airlines Logo
12:37 pm - 6:05 pm-
5h 28m
American Airlines Logo
8:36 am - 2:35 pm-
5h 59m
$367American Airlines
Fri, Aug 14 - Mon, Aug 17
American Airlines Logo
12:37 pm - 6:05 pm-
5h 28m
American Airlines Logo
8:36 am - 2:35 pm-
5h 59m
$513American Airlines
Fri, Aug 14 - Mon, Aug 17
American Airlines Logo
12:37 pm - 6:05 pm-
5h 28m
American Airlines Logo
8:36 am - 2:35 pm-
5h 59m
$569American Airlines
Fri, Aug 14 - Mon, Aug 17
American Airlines Logo
12:47 pm - 6:04 pm-
5h 17m
American Airlines Logo
1:06 pm - 8:52 pm-
7h 46m
$573American Airlines
Fri, Oct 2 - Tue, Oct 6
American Airlines Logo
5:00 am - 12:54 pm-
7h 54m
American Airlines Logo
5:42 am - 9:29 am-
3h 47m
$613American Airlines
Fri, Aug 28 - Fri, Sep 4

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American Airlines flights from Killeen to St. Louis

Our best American Airlines deals on Killeen to St. Louis flight tickets
American Airlines
Oct 2
GRK12:47 pmKilleen Fort Hood Regional
5h 17m
1 stop
STL6:04 pmLambert-St Louis
Oct 6
STL12:47 pmLambert-St Louis
5h 45m
1 stop
GRK6:32 pmKilleen Fort Hood Regional
$289
American Airlines
Aug 14
GRK12:37 pmKilleen Fort Hood Regional
5h 28m
1 stop
STL6:05 pmLambert-St Louis
Aug 17
STL8:36 amLambert-St Louis
5h 59m
1 stop
GRK2:35 pmKilleen Fort Hood Regional
$513
American Airlines
Aug 14
GRK12:37 pmKilleen Fort Hood Regional
5h 28m
1 stop
STL6:05 pmLambert-St Louis
Aug 17
STL8:36 amLambert-St Louis
5h 59m
1 stop
GRK2:35 pmKilleen Fort Hood Regional
$569

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 August 5, 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 round-trip

KilleenSt. Louis

GRK - STL

GRKSTL

Killeen Fort Hood Regional

Fri 10/2

12:47 pm-6:04 pm

1 stop5h 17m

Lambert-St Louis

Tue 10/6

12:47 pm-6:32 pm

1 stop5h 45m

$289

KilleenSt. Louis

GRK - STL

GRKSTL

Killeen Fort Hood Regional

Fri 8/28

3:05 pm-7:43 pm

1 stop4h 38m

Lambert-St Louis

Fri 9/4

5:42 am-9:29 am

1 stop3h 47m

$299
Quickest round-trip

KilleenSt. Louis

GRK - STL

GRKSTL

Killeen Fort Hood Regional

Fri 8/28

5:00 am-9:24 am

1 stop4h 24m

Lambert-St Louis

Fri 9/4

5:42 am-9:29 am

1 stop3h 47m

$300

KilleenSt. Louis

GRK - STL

GRKSTL

Killeen Fort Hood Regional

Fri 8/14

12:37 pm-6:05 pm

1 stop5h 28m

Lambert-St Louis

Mon 8/17

8:36 am-2:35 pm

1 stop5h 59m

$367

KilleenSt. Louis

GRK - STL

GRKSTL

Killeen Fort Hood Regional

Fri 8/14

12:37 pm-6:05 pm

1 stop5h 28m

Lambert-St Louis

Mon 8/17

8:36 am-2:35 pm

1 stop5h 59m

$513

KilleenSt. Louis

GRK - STL

GRKSTL

Killeen Fort Hood Regional

Fri 8/14

12:37 pm-6:05 pm

1 stop5h 28m

Lambert-St Louis

Mon 8/17

8:36 am-2:35 pm

1 stop5h 59m

$569

KilleenSt. Louis

GRK - STL

GRKSTL

Killeen Fort Hood Regional

Fri 10/2

12:47 pm-6:04 pm

1 stop5h 17m

Lambert-St Louis

Tue 10/6

1:06 pm-8:52 pm

2 stops7h 46m

$573

KilleenSt. Louis

GRK - STL

GRKSTL

Killeen Fort Hood Regional

Fri 8/28

5:00 am-12:54 pm

2 stops7h 54m

Lambert-St Louis

Fri 9/4

5:42 am-9:29 am

1 stop3h 47m

$613

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

Can stopping save me money on Killeen to St. Louis flights?

You could potentially save up to 15% on your flight if you consider stops on a Killeen to St. Louis flight.

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

5h 17m

Direct flights

None
The fastest flight from Killeen to St. Louis takes 5h 17m
There are no direct flights from Killeen to St. Louis. There are no popular flight routes from Killeen to St. Louis.
Search flight deals

Frequently asked questions about flying from Killeen to St. Louis

  • 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 5h 17m.

  • 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 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.

Traveling to a place near St. Louis?

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

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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