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Cheap flights from Killeen to Illinois from $278

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 Illinois departing on 8/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Killeen to Illinois

Cheap round-trip flights

American Airlines Logo
11:34 am - 6:22 pmGRK-STL
6h 48m1 stop
American Airlines Logo
7:16 am - 11:08 amSTL-GRK
3h 52m1 stop
$289American Airlines
Find Deal
Fri, Oct 3 - Sun, Oct 5
American Airlines Logo
11:34 am - 6:22 pmGRK-STL
6h 48m1 stop
American Airlines Logo
5:18 am - 9:38 amSTL-GRK
4h 20m1 stop
$291American Airlines
Find Deal
Fri, Oct 3 - Sun, Oct 5
American Airlines Logo
4:40 pm - 10:50 pmGRK-STL
6h 10m1 stop
American Airlines Logo
6:10 am - 4:10 pmSTL-GRK
10h 00m2 stops
$296American Airlines
Find Deal
Tue, Sep 16 - Tue, Sep 23
American Airlines Logo
5:16 am - 1:23 pmGRK-STL
8h 07m2 stops
American Airlines Logo
7:23 am - 4:10 pmSTL-GRK
8h 47m2 stops
$301American Airlines
Find Deal
Tue, Sep 16 - Tue, Sep 23
American Airlines Logo
11:34 am - 8:32 pmGRK-STL
8h 58m2 stops
American Airlines Logo
5:18 am - 11:08 amSTL-GRK
5h 50m1 stop
$480American Airlines
Find Deal
Fri, Oct 3 - Sun, Oct 5
American Airlines Logo
10:17 am - 9:53 pmGRK-STL
11h 36m2 stops
American Airlines Logo
5:18 am - 9:38 amSTL-GRK
4h 20m1 stop
$481American Airlines
Find Deal
Fri, Oct 3 - Sun, Oct 5
American Airlines Logo
11:34 am - 5:18 pmGRK-ORD
5h 44m1 stop
American Airlines Logo
6:00 am - 11:08 amORD-GRK
5h 08m1 stop
$589American Airlines
Find Deal
Wed, Sep 3 - Sun, Sep 7
American Airlines Logo
10:17 am - 8:32 pmGRK-STL
10h 15m2 stops
American Airlines Logo
6:05 am - 4:02 pmSTL-GRK
9h 57m2 stops
$654American Airlines
Find Deal
Fri, Oct 3 - Sun, Oct 5
American Airlines Logo
5:16 am - 3:37 pmGRK-STL
10h 21m2 stops
American Airlines Logo
6:05 am - 4:02 pmSTL-GRK
9h 57m2 stops
$672American Airlines
Find Deal
Tue, Sep 23 - Thu, Sep 25
American Airlines Logo
5:16 am - 11:52 amGRK-STL
6h 36m1 stop
American Airlines Logo
6:05 am - 4:02 pmSTL-GRK
9h 57m2 stops
$808American Airlines
Find Deal
Tue, Sep 23 - Thu, Sep 25

American Airlines flights from Killeen to Illinois

Our best American Airlines deals on Killeen to Illinois flight tickets
American Airlines
Oct 3
GRK11:34 amKilleen Fort Hood Regional
6h 48m
1 stop
STL6:22 pmLambert-St Louis
Oct 5
STL7:16 amLambert-St Louis
3h 52m
1 stop
GRK11:08 amKilleen Fort Hood Regional
$289
Find similar
American Airlines
Oct 3
GRK11:34 amKilleen Fort Hood Regional
6h 48m
1 stop
STL6:22 pmLambert-St Louis
Oct 5
STL5:18 amLambert-St Louis
4h 20m
1 stop
GRK9:38 amKilleen Fort Hood Regional
$291
Find similar
American Airlines
Sep 16
GRK4:40 pmKilleen Fort Hood Regional
6h 10m
1 stop
STL10:50 pmLambert-St Louis
Sep 23
STL6:10 amLambert-St Louis
10h 00m
2 stops
GRK4:10 pmKilleen Fort Hood Regional
$296
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Killeen to Illinois 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 21, 2025.
Use the filters below to find and compare flights from Killeen to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

KilleenSt. Louis

GRK - STL

GRKSTL

Killeen Fort Hood Regional

Fri 10/3

11:34 am-6:22 pm

1 stop6h 48m

Lambert-St Louis

Sun 10/5

7:16 am-11:08 am

1 stop3h 52m

$289

KilleenSt. Louis

GRK - STL

GRKSTL

Killeen Fort Hood Regional

Fri 10/3

11:34 am-6:22 pm

1 stop6h 48m

Lambert-St Louis

Sun 10/5

5:18 am-9:38 am

1 stop4h 20m

$291

KilleenSt. Louis

GRK - STL

GRKSTL

Killeen Fort Hood Regional

Tue 9/16

4:40 pm-10:50 pm

1 stop6h 10m

Lambert-St Louis

Tue 9/23

6:10 am-4:10 pm

2 stops10h 00m

$296

KilleenSt. Louis

GRK - STL

GRKSTL

Killeen Fort Hood Regional

Tue 9/16

5:16 am-1:23 pm

2 stops8h 07m

Lambert-St Louis

Tue 9/23

7:23 am-4:10 pm

2 stops8h 47m

$301

KilleenSt. Louis

GRK - STL

GRKSTL

Killeen Fort Hood Regional

Fri 10/3

11:34 am-8:32 pm

2 stops8h 58m

Lambert-St Louis

Sun 10/5

5:18 am-11:08 am

1 stop5h 50m

$480

KilleenSt. Louis

GRK - STL

GRKSTL

Killeen Fort Hood Regional

Fri 10/3

10:17 am-9:53 pm

2 stops11h 36m

Lambert-St Louis

Sun 10/5

5:18 am-9:38 am

1 stop4h 20m

$481

KilleenChicago

GRK - ORD

GRKORD

Killeen Fort Hood Regional

Wed 9/3

11:34 am-5:18 pm

1 stop5h 44m

Chicago O'Hare Intl

Sun 9/7

6:00 am-11:08 am

1 stop5h 08m

$589

KilleenSt. Louis

GRK - STL

GRKSTL

Killeen Fort Hood Regional

Fri 10/3

10:17 am-8:32 pm

2 stops10h 15m

Lambert-St Louis

Sun 10/5

6:05 am-4:02 pm

2 stops9h 57m

$654

KilleenSt. Louis

GRK - STL

GRKSTL

Killeen Fort Hood Regional

Tue 9/23

5:16 am-3:37 pm

2 stops10h 21m

Lambert-St Louis

Thu 9/25

6:05 am-4:02 pm

2 stops9h 57m

$672

KilleenSt. Louis

GRK - STL

GRKSTL

Killeen Fort Hood Regional

Tue 9/23

5:16 am-11:52 am

1 stop6h 36m

Lambert-St Louis

Thu 9/25

6:05 am-4:02 pm

2 stops9h 57m

$808

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Illinois from

How to get the cheapest flight ticket from Killeen to Illinois

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 time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the morning. Flights from Killeen to Illinois during this time can be as low as $346. Flights in the afternoon are often more expensive with an average ticket price of $458.

Cheap Killeen to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Killeen to Illinois

Direct flights

None
There are no direct flights from Killeen to Illinois. There are no popular flight routes from Killeen to Illinois.
Search flight deals

  • When did momondo last update prices for flights from Killeen Fort Hood Regional Airport to Illinois?

    Prices for flights from Killeen Fort Hood Regional Airport to Illinois are refreshed on a daily basis.

  • How many operators does momondo search for flights from Killeen Fort Hood Regional Airport to Illinois?

  • How old do you have to be to fly from Killeen Fort Hood Regional Airport to Illinois?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Killeen Fort Hood Regional Airport to Illinois.

  • What documentation or ID do you need to fly to Illinois?

    The required travel and health documents for your Illinois 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 Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Killeen to Illinois

Compare and see reviews for airlines that fly from Killeen to Illinois with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $337Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Killeen to Illinois?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Illinois from Killeen.

Can I find flights from Killeen to Illinois with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Killeen to Illinois flights to just show those with flexible booking policies.

How can momondo help me find flights from Killeen to Illinois?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Killeen to Illinois.

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

Yes momondo offers price alerts on flights to Illinois from Killeen. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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