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Killeen

$233+ 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 7/25. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — GRK
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
1 adult, Economy
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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 June 30, 2025.

Round-trip from

$289
(American Airlines)

One-way from

$233
(American Airlines)
From Illinois to Killeen Fort Hood Regional
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One-way flight from Illinois to Killeen Fort Hood Regional
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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 June 30, 2025.

This American Airlines deal was found by Cheapflights users on 6/28. 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.
Wed 12/245:57 pmSTL - GRK
1 stop5h 29mAmerican Airlines
Wed 12/315:20 amGRK - STL
1 stop3h 27mAmerican Airlines
Deal found 6/28$289
This American Airlines deal was found by Cheapflights users on 6/28. 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.
Tue 8/126:00 amORD - GRK
1 stop5h 41mAmerican Airlines
Tue 8/195:16 amGRK - ORD
1 stop5h 43mAmerican Airlines
Deal found 6/28$368
This American Airlines deal was found by Cheapflights users on 6/28. 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.
Sat 9/135:40 pmMLI - GRK
1 stop5h 05mAmerican Airlines
Thu 9/184:32 pmGRK - MLI
1 stop6h 51mAmerican Airlines
Deal found 6/28$422

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 June 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

Sat 8/30

5:15 am-10:01 am

1 stop4h 46m

Killeen Fort Hood Regional

Sat 9/13

10:07 am-3:09 pm

1 stop5h 02m

$289

ChicagoKilleen

ORD - GRK

ORDGRK

Chicago O'Hare Intl

Tue 8/12

6:00 am-11:41 am

1 stop5h 41m

Killeen Fort Hood Regional

Tue 8/19

5:16 am-10:59 am

1 stop5h 43m

$368

MolineKilleen

MLI - GRK

MLIGRK

Moline Quad-City

Sat 9/13

5:40 pm-10:45 pm

1 stop5h 05m

Killeen Fort Hood Regional

Thu 9/18

4:32 pm-11:23 pm

1 stop6h 51m

$422

ChampaignKilleen

CMI - GRK

CMIGRK

Champaign University-Willard

Fri 7/25

3:20 pm-7:28 pm

1 stop4h 08m

$233

ChicagoKilleen

ORD - GRK

ORDGRK

Chicago O'Hare Intl

Mon 7/7

5:00 am-10:01 am

1 stop5h 01m

$278

MolineKilleen

MLI - GRK

MLIGRK

Moline Quad-City

Thu 7/3

5:45 am-12:08 pm

1 stop6h 23m

$460

St. LouisKilleen

STL - GRK

STLGRK

Lambert-St Louis

Sun 7/6

5:30 am-10:01 am

1 stop4h 31m

$460

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

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, January is the cheapest month in which you can book a flight from Illinois to Killeen (average of $316). Flying from Illinois to Killeen in December is currently the most expensive (average of $468). 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 June 30, 2025.
Peruse reviews from past customers who have flown with American Airlines from Illinois to Killeen to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
10,000 reviews

Boarding

7.5

Entertainment

6.9

Overall

7.2

Comfort

7.2

Food

6.5

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2025

PIT - DFW

Due to gate changes,we nearly missed our flight. The gate agent reassigned our seats and would NOT give us our assigned seats,but she did honor that same request to the man who arrived after us. Her rudeness and difficulty was not appropriate.
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Boarding

7.5

Entertainment

6.9

Overall

7.2

Comfort

7.2

Food

6.5

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2025

PIT - DFW

Due to gate changes,we nearly missed our flight. The gate agent reassigned our seats and would NOT give us our assigned seats,but she did honor that same request to the man who arrived after us. Her rudeness and difficulty was not appropriate.

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.

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

    While some choose either Lambert-St Louis - Killeen Fort Hood Regional or Moline Quad-City - Killeen Fort Hood Regional, Chicago O'Hare Intl - 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, January is the cheapest month in which you can book a flight from Illinois to Killeen (average of $316). Flying from Illinois to Killeen in December is currently the most expensive (average of $468). 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 Illinois?

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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 June 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$234Average$389FlexibilityNo cancel feeOn-time71%

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