$227 Find Cheap Flights from Killeen to Illinois

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Killeen to Illinois departing on 12/30. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Killeen to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Killeen to Illinois, as well as popular online travel agencies
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Cheap Flights from Killeen to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Peoria
Peoria1 stop$619
Champaign
Champaign1 stop$436
St. Louis
St. Louis1 stop$269
Peoria
Peoria1 stop$619
Champaign
Champaign1 stop$436
St. Louis
St. Louis1 stop$269

Book Cheap Killeen to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Killeen to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Killeen to Illinois

Thu, Nov 20 - Sun, Nov 23
American Airlines Logo
4:10 pm - 10:34 pmGRK-STL
6h 24m1 stop
American Airlines Logo
5:17 am - 10:04 amSTL-GRK
4h 47m1 stop
$269American Airlines
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Sat, Feb 21 - Tue, Feb 24
American Airlines Logo
6:40 pm - 11:21 pmGRK-STL
4h 41m1 stop
American Airlines Logo
3:34 pm - 10:24 pmSTL-GRK
6h 50m1 stop
$319American Airlines
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Sat, Feb 21 - Tue, Feb 24
American Airlines Logo
12:01 pm - 5:05 pmGRK-STL
5h 04m1 stop
American Airlines Logo
2:19 pm - 10:24 pmSTL-GRK
8h 05m2 stops
$324American Airlines
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Thu, Nov 20 - Sun, Nov 23
American Airlines Logo
6:05 am - 10:39 amGRK-STL
4h 34m1 stop
American Airlines Logo
3:43 pm - 11:43 pmSTL-GRK
8h 00m2 stops
$347American Airlines
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Wed, Feb 25 - Sat, Feb 28
American Airlines Logo
12:01 pm - 5:32 pmGRK-ORD
5h 31m1 stop
American Airlines Logo
5:11 pm - 10:24 pmORD-GRK
5h 13m1 stop
$383American Airlines
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Thu, Nov 27 - Thu, Dec 4
American Airlines Logo
10:34 am - 3:19 pmGRK-ORD
4h 45m1 stop
American Airlines Logo
5:18 am - 11:18 amORD-GRK
6h 00m1 stop
$397American Airlines
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Thu, Nov 20 - Sun, Nov 23
American Airlines Logo
5:05 am - 1:43 pmGRK-STL
8h 38m2 stops
American Airlines Logo
3:43 pm - 11:43 pmSTL-GRK
8h 00m2 stops
$425American Airlines
Find Deal
Wed, Nov 12 - Sun, Nov 16
American Airlines Logo
4:10 pm - 10:20 pmGRK-ORD
6h 10m1 stop
American Airlines Logo
5:18 am - 10:04 amORD-GRK
4h 46m1 stop
$427American Airlines
Find Deal
Sat, Nov 15 - Wed, Nov 19
American Airlines Logo
5:05 am - 9:58 amGRK-ORD
4h 53m1 stop
American Airlines Logo
8:50 am - 3:40 pmORD-GRK
6h 50m1 stop
$429American Airlines
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Sat, Feb 21 - Wed, Feb 25
American Airlines Logo
6:40 pm - 11:40 pmGRK-ORD
5h 00m1 stop
American Airlines Logo
8:00 am - 8:13 pmORD-GRK
12h 13m2 stops
$434American Airlines
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Booking Insights

KAYAK's insights & trends for Killeen to Illinois flights

Get data-powered insights and trends into flights from Killeen to Illinois to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Killeen to Illinois?

The average price of all round-trip flights from Killeen to Illinois clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Illinois on a Thursday, as we generally find the cheapest rates on that day for this route. On the other hand, Wednesday is the most expensive day to fly from Killeen to Illinois. For your return ticket, we recommend flying on a Saturday and avoiding Fridays for the best deals.

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Good to know

Cheapest flight$227
Flight from Killeen to Chicago

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Killeen to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Killeen to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Killeen to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Killeen to Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Killeen to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Killeen to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Killeen to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Killeen to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Illinois?

    The cheapest time of day to fly to Illinois is generally in the morning, when round-trip flights cost $346 on average. Morning departures are around 24% cheaper than evening flights, on average. The most expensive time of day to fly to Illinois is generally in the evening, which is peak travel time and where the average cost of a ticket is $458.

Reviews of the top airline flying from Killeen to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Killeen to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Killeen to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
American AirlinesOverall score based on 11030 reviews
8.0Crew
7.2Comfort
6.4Food
6.9Entertainment
7.5Boarding
Airline reviews

It was good..clean, comfy seat. Friendly warm welcoming crew. Was able to check my cabin luggage at the gate which I was able to pickup in a decent time from baggage claim. The app gave all updates from delays to baggage claim info. Overall smooth flight.

8.0 ExcellentKrishna, Oct 2025BOS - ORD
Read more American Airlines reviews

It was good..clean, comfy seat. Friendly warm welcoming crew. Was able to check my cabin luggage at the gate which I was able to pickup in a decent time from baggage claim. The app gave all updates from delays to baggage claim info. Overall smooth flight.

It was a typical flight. We had a delay which seems to be the normality now. And we had no in flight service due to conditions.

After we landed we sat on the tarmac for 1.5 hours waiting to get to our gate. Ridiculous.

Terrible. Flight delayed for more than 8 hours with only a $12 meal voucher provided for the inconvenience. The airplane did not have breaks on arrival yet they still made us go through the motions and board on time knowing we could not take off then sit for 40+ minutes before having to get of the time. A complete waste of my time. I cannot believe they can stay business with these shenanigans. I’ll avoid this company like the plague moving forward as the lack of accountability is disgraceful.

This was the best 2 flights I have had with American out of SGF. Great crew both flights.

Excellent - explanations were clear staff was nice and flight was comfortable

Lost bag and 2 days no word leaving for cruise no clothes or stuff

Any flight to ORD after about 2pm this summer has been challenging. Flight was delayed getting in (coming from ORD) and that led to it not leaving before a ground stop due to lightening before they could fuel the plane, and so forth. They made up some time but we were still late in arriving at ORD, and that led to missed connections.

Food was ok, but not as good as I have had before on AA.

Pretty good. The food was just mediocre, the boarding and crew were good.

Everything you need to know for your flight from Killeen to Illinois

Information on your arrival and departure airports

Killeen (GRK)

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