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Killeen

$227+ Cheap flights from Illinois to Killeen (GRK)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/1. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — GRK
nov. 29 — dic. 61
sáb. 11/29
sáb. 12/6
1 adult, Economy
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Find flight deals from Illinois to Killeen

Cheapest flights from Illinois to Killeen
Explore the most affordable flight options available from Illinois to Killeen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 30, 2025.

This American Airlines deal was found by Cheapflights users on 10/29. 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.
jue. 11/1311:42 amSTL - GRK
1 stop6h 32mAmerican Airlines
lun. 11/175:05 amGRK - STL
1 stop3h 50mAmerican Airlines
Deal found 10/29$337
This American Airlines deal was found by Cheapflights users on 10/30. 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.
mié. 12/2411:41 amSTL - GRK
1 stop4h 15mAmerican Airlines
mié. 12/316:00 amGRK - STL
1 stop4h 50mAmerican Airlines
Deal found 10/30$342
This American Airlines deal was found by Cheapflights users on 10/28. 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.
sáb. 11/81:20 pmSTL - GRK
1 stop5h 06mAmerican Airlines
mar. 11/116:05 amGRK - STL
1 stop4h 34mAmerican Airlines
Deal found 10/28$394
This American Airlines deal was found by Cheapflights users on 10/29. 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.
lun. 11/243:13 pmORD - GRK
1 stop7h 11mAmerican Airlines
vie. 11/284:10 pmGRK - ORD
1 stop7h 21mAmerican Airlines
Deal found 10/29$397
This American Airlines deal was found by Cheapflights users on 10/29. 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.
vie. 11/215:18 amORD - GRK
1 stop4h 46mAmerican Airlines
lun. 11/247:09 pmGRK - ORD
1 stop4h 38mAmerican Airlines
Deal found 10/29$411
This American Airlines deal was found by Cheapflights users on 10/29. 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.
mié. 11/265:17 amSTL - GRK
1 stop4h 47mAmerican Airlines
vie. 11/286:05 amGRK - STL
2 stops7h 38mAmerican Airlines
Deal found 10/29$440
This American Airlines deal was found by Cheapflights users on 10/28. 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.
vie. 10/315:11 amSTL - GRK
1 stop6h 53mAmerican Airlines
sáb. 11/12:48 pmGRK - STL
1 stop3h 41mAmerican Airlines
Deal found 10/28$441
This American Airlines deal was found by Cheapflights users on 10/29. 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.
lun. 12/221:54 pmSTL - GRK
2 stops8h 35mAmerican Airlines
lun. 12/296:32 pmGRK - STL
1 stop4h 24mAmerican Airlines
Deal found 10/29$480
This American Airlines deal was found by Cheapflights users on 10/28. 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.
vie. 10/317:01 amSTL - GRK
1 stop5h 03mAmerican Airlines
dom. 11/210:34 amGRK - STL
1 stop6h 34mAmerican Airlines
Deal found 10/28$490
This American Airlines deal was found by Cheapflights users on 10/30. 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.
jue. 10/3011:16 amPIA - GRK
1 stop6h 27mAmerican Airlines
sáb. 11/15:16 amGRK - PIA
1 stop5h 30mAmerican Airlines
Deal found 10/30$500
This American Airlines deal was found by Cheapflights users on 10/28. 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.
mié. 10/292:57 pmORD - GRK
1 stop6h 36mAmerican Airlines
dom. 11/25:05 amGRK - ORD
1 stop5h 37mAmerican Airlines
Deal found 10/28$506
This American Airlines deal was found by Cheapflights users on 10/30. 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.
jue. 10/304:10 pmORD - GRK
1 stop7h 40mAmerican Airlines
sáb. 11/12:48 pmGRK - ORD
1 stop4h 52mAmerican Airlines
Deal found 10/30$561

Cheap flight deals from Illinois to Killeen

Keep the following information in mind while searching for Illinois to Killeen flight deals. Data was last updated octubre 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$337
(American Airlines)

One-way from

$227
(American Airlines)
Provider with most accurate pricing for Chicago (CHI)-Killeen Fort Hood Regional flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Killeen Fort Hood Regional flights.
Search Deals
From Illinois to Killeen Fort Hood Regional
Search Deals
One-way flight from Illinois to Killeen Fort Hood Regional
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois 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 octubre 30, 2025.
Use the filters below to find and compare flights from Illinois to Killeen that are best for you.

Fly from

Illinois

Fly to

Killeen

Route

Depart

Return

Price

St. LouisKilleen

STL - GRK

STLGRK

Lambert-St Louis

jue. 11/13

11:42 am-6:14 pm

1 stop6h 32m

Killeen Fort Hood Regional

lun. 11/17

5:05 am-8:55 am

1 stop3h 50m

$337

St. LouisKilleen

STL - GRK

STLGRK

Lambert-St Louis

lun. 12/22

5:16 am-11:27 am

1 stop6h 11m

Killeen Fort Hood Regional

lun. 12/29

6:32 pm-10:56 pm

1 stop4h 24m

$342

St. LouisKilleen

STL - GRK

STLGRK

Lambert-St Louis

mié. 12/24

11:41 am-3:56 pm

1 stop4h 15m

Killeen Fort Hood Regional

mié. 12/31

11:57 am-5:07 pm

1 stop5h 10m

$342

St. LouisKilleen

STL - GRK

STLGRK

Lambert-St Louis

mié. 11/26

5:17 am-10:04 am

1 stop4h 47m

Killeen Fort Hood Regional

vie. 11/28

6:05 am-10:39 am

1 stop4h 34m

$342

ChicagoKilleen

ORD - GRK

ORDGRK

Chicago O'Hare Intl

vie. 11/21

5:18 am-10:04 am

1 stop4h 46m

Killeen Fort Hood Regional

lun. 11/24

7:09 pm-11:47 pm

1 stop4h 38m

$411

St. LouisKilleen

STL - GRK

STLGRK

Lambert-St Louis

sáb. 3/7

5:55 pm-10:24 pm

1 stop4h 29m

Killeen Fort Hood Regional

mar. 3/10

6:43 pm-10:24 pm

1 stop3h 41m

$412

PeoriaKilleen

PIA - GRK

PIAGRK

Greater Peoria

sáb. 2/21

5:10 pm-10:24 pm

1 stop5h 14m

Killeen Fort Hood Regional

mié. 2/25

6:40 pm-11:07 pm

1 stop4h 27m

$461

St. LouisKilleen

STL - GRK

STLGRK

Lambert-St Louis

sáb. 11/29

5:17 am-10:01 am

1 stop4h 44m

Killeen Fort Hood Regional

sáb. 12/6

11:52 am-5:11 pm

1 stop5h 19m

$498

MolineKilleen

MLI - GRK

MLIGRK

Moline Quad-City

sáb. 3/7

3:34 pm-10:24 pm

1 stop6h 50m

Killeen Fort Hood Regional

mié. 3/11

10:37 am-2:14 pm

1 stop3h 37m

$524

ChicagoKilleen

ORD - GRK

ORDGRK

Chicago O'Hare Intl

mié. 3/18

6:00 am-10:52 am

1 stop4h 52m

Killeen Fort Hood Regional

sáb. 3/21

5:24 am-10:58 am

1 stop5h 34m

$568

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 19 results
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Best time to book a flight from Illinois to Killeen

Have a flexible travel schedule? Discover the best time to fly to Killeen from Illinois 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 Illinois to Killeen

What is the cheapest month to book a flight from Illinois to Killeen?

Currently, October is the cheapest month in which you can book a flight from Illinois to Killeen (average of $77). Flying from Illinois to Killeen in February is currently the most expensive (average of $179). 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.

Related info for your journey

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

  • What airport do you fly into for flights to Killeen from Illinois?

    Most people fly into Killeen Fort Hood Regional (GRK) if they book a flight to Killeen from Illinois. Fort Hood Regional is conveniently located just 6.9 mi from Killeen’s city center.

  • How long is the flight from Illinois to Killeen?

    American Airlines can get you from Illinois to Killeen in just under 6h 32m. Your travel time can differ by up to . There are 678 mi between Illinois and Killeen.

  • What are the most popular routes from Illinois to Killeen?

    While some choose either Chicago O'Hare Intl - Killeen Fort Hood Regional or Greater Peoria - Killeen Fort Hood Regional, Lambert-St Louis - Killeen Fort Hood Regional is the most popular route from Illinois to Killeen.

  • Can I find deals for flights from Illinois to Killeen that include hotel bookings?

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

  • How can I find direct flights from Illinois to Killeen?

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

  • Can I find deals for business class flights from Illinois to Killeen?

    Yes. Cheapflights offers flight deals from Illinois 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 Illinois to Killeen?

    Currently, October is the cheapest month in which you can book a flight from Illinois to Killeen (average of $77). Flying from Illinois to Killeen in February is currently the most expensive (average of $179). 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
Copperas Cove
Temple

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Alternative routes for Illinois to Killeen

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Illinois to Killeen

Discover the top airline that operate flights from Illinois 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 octubre 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$234Average$442FlexibilityNo cancel feeOn-time71%

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