$163 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 11/26. 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

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
Champaign
Champaign1 stop$396
St. Louis
St. Louis1 stop$311
Champaign
Champaign1 stop$396
St. Louis
St. Louis1 stop$311

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

Sun, Oct 19 - Sun, Oct 26
American Airlines Logo
6:13 pm - 11:49 pmGRK-STL
5h 36m1 stop
American Airlines Logo
5:11 am - 10:06 amSTL-GRK
4h 55m1 stop
$311American Airlines
Find Deal
Fri, Oct 3 - Sun, Oct 5
American Airlines Logo
4:40 pm - 8:15 pmGRK-STL
3h 35m1 stop
American Airlines Logo
5:18 am - 9:38 amSTL-GRK
4h 20m1 stop
$325American 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
7:16 am - 11:08 amSTL-GRK
3h 52m1 stop
$339American Airlines
Find Deal
Thu, Nov 27 - Tue, Dec 2
American Airlines Logo
6:05 am - 10:37 amGRK-STL
4h 32m1 stop
American Airlines Logo
5:17 am - 10:04 amSTL-GRK
4h 47m1 stop
$363American Airlines
Find Deal
Sat, Feb 21 - Tue, Feb 24
American Airlines Logo
5:18 am - 9:56 amGRK-STL
4h 38m1 stop
American Airlines Logo
9:35 am - 3:49 pmSTL-GRK
6h 14m1 stop
$381American Airlines
Find Deal
Sat, Feb 21 - Tue, Feb 24
American Airlines Logo
5:18 am - 4:06 pmGRK-STL
10h 48m2 stops
American Airlines Logo
4:04 pm - 7:46 pmSTL-GRK
3h 42m1 stop
$386American Airlines
Find Deal
Sat, Feb 21 - Tue, Feb 24
American Airlines Logo
10:26 am - 5:56 pmGRK-STL
7h 30m2 stops
American Airlines Logo
6:04 am - 3:49 pmSTL-GRK
9h 45m2 stops
$391American Airlines
Find Deal
Wed, Feb 18 - Sat, Feb 21
American Airlines Logo
10:26 am - 2:22 pmGRK-CMI
3h 56m1 stop
American Airlines Logo
3:42 pm - 7:46 pmCMI-GRK
4h 04m1 stop
$396American Airlines
Find Deal
Wed, Feb 18 - Sat, Feb 21
American Airlines Logo
10:26 am - 2:22 pmGRK-CMI
3h 56m1 stop
American Airlines Logo
1:20 pm - 11:24 pmCMI-GRK
10h 04m2 stops
$402American Airlines
Find Deal
Tue, Sep 30 - Sat, Oct 4
American Airlines Logo
5:16 am - 9:26 amGRK-ORD
4h 10m1 stop
American Airlines Logo
6:30 pm - 10:45 pmORD-GRK
4h 15m1 stop
$443American Airlines
Find Deal
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.

Good to know

Cheapest flight$163
Flight from Killeen to Champaign

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 10000 reviews
7.5Boarding
8.0Crew
6.4Food
7.2Comfort
6.9Entertainment
Airline reviews

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.

6.0 GoodMitchell, Aug 2025CMH - ORD
Read more American Airlines reviews

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.

My flight got switched and my prepaid bag didnt transfer over properly so I paid to check ANOTHER BAG. I was placed in a middle seat and it was just miserable. At least it was a bulkhead row so I had legroom. The flight just never seem3d to end

Was not able to watch most shows on the entertainment site. They would not load

On Wednesday, July 30 we were in mid flight from Manchester to Charlotte and we turned around because the right engine was malfunctioning. That was the last flight out of Manchester that night. I was rebooked for Thursday, which became a weather event Friday. There were no seats left on the flight from Manchester to Charlotte. Consequently I didn’t leave Manchester until Saturday morning and we flew to Chicago so to say the least my scheduled flight and return to Iowa was three days off and it messed with my business schedule. Consequently cash flow. I would like some sort of acknowledgment of this event.

Dreadful experience. Our flight was delayed more than 8 hours due to a maintenance issue and the assistance from rebooking was poor. I was travelling with a bad knee and needed assistance waited in one place more than 3 hours before someone came with a wheelchair. The woman next to me was a 91 year old great grandmother who had waited more than 4 hours. There were moments of support from the staff but it appeared as they were going against the direction of management. It was apathy, lack of ownership and dismissive responses with small moments of kindness and understanding typically from grey haired, female, veteran staff..

Couldn’t get the door on the plane to close leading to a nearly 2 hour delay. But, hey at least they didn’t cancel the flight.

The flight was fine and the crew awesome. The problem is ORD and AA. Computers went down, ORD fell apart and a 40 min flight turned into a 3 hour trip. Guess the answer is to not try and fly to ORD after noon. But, as I said, crew was awesome and did everything they could to lesson the flight time.

The flight was fine but the 8 hour delay in Chicago was awful - 5 gate changes and repeated delays without an explanation. No vouchers. Nothing.

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

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