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Cheap flights from Ontario to Killeen from $348

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Killeen departing on 4/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ontario to Killeen

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
11:58 pm - 9:45 am
ONT
-
GRK
7h 47m
1 stop
American Airlines Logo
7:09 pm - 10:36 pm
GRK
-
ONT
5h 27m
1 stop
$348American Airlines
Thu, Apr 2 - Tue, Apr 7
American Airlines Logo
2:08 pm - 9:52 pm
ONT
-
GRK
5h 44m
1 stop
American Airlines Logo
7:09 pm - 10:36 pm
GRK
-
ONT
5h 27m
1 stop
$361American Airlines
Fri, Apr 24 - Tue, Apr 28
American Airlines Logo
7:35 pm - 9:35 am
ONT
-
GRK
12h 00m
2 stops
American Airlines Logo
5:00 am - 10:09 am
GRK
-
ONT
7h 09m
1 stop
$366American Airlines
Fri, Apr 24 - Tue, Apr 28
American Airlines Logo
7:35 pm - 9:35 am
ONT
-
GRK
12h 00m
2 stops
American Airlines Logo
11:58 am - 6:24 pm
GRK
-
ONT
8h 26m
2 stops
$371American Airlines
Fri, Apr 24 - Tue, Apr 28
American Airlines Logo
11:59 pm - 9:34 am
ONT
-
GRK
7h 35m
1 stop
American Airlines Logo
7:21 pm - 11:59 pm
GRK
-
ONT
6h 38m
1 stop
$421American Airlines
Sat, May 30 - Fri, Jun 12
American Airlines Logo
11:58 pm - 9:45 am
ONT
-
GRK
7h 47m
1 stop
American Airlines Logo
5:00 am - 4:22 pm
GRK
-
ONT
13h 22m
2 stops
$466American Airlines
Thu, Apr 2 - Tue, Apr 7
American Airlines Logo
11:59 pm - 9:35 am
ONT
-
GRK
7h 36m
1 stop
American Airlines Logo
7:09 pm - 11:46 pm
GRK
-
ONT
6h 37m
1 stop
$470American Airlines
Thu, Apr 9 - Sun, Apr 12
American Airlines Logo
7:35 pm - 9:35 am
ONT
-
GRK
12h 00m
2 stops
American Airlines Logo
7:09 pm - 11:46 pm
GRK
-
ONT
6h 37m
1 stop
$475American Airlines
Thu, Apr 9 - Sun, Apr 12
American Airlines Logo
11:58 pm - 9:45 am
ONT
-
GRK
7h 47m
1 stop
American Airlines Logo
11:58 am - 6:24 pm
GRK
-
ONT
8h 26m
2 stops
$478American Airlines
Thu, Apr 2 - Tue, Apr 7
American Airlines Logo
11:58 pm - 9:45 am
ONT
-
GRK
7h 47m
1 stop
American Airlines Logo
6:33 pm - 10:30 pm
GRK
-
ONT
5h 57m
1 stop
$480American Airlines
Tue, Mar 24 - Wed, Apr 1

American Airlines flights from Ontario to Killeen

Our best American Airlines deals on Ontario to Killeen flight tickets
American Airlines
Apr 2
ONT11:58 pmOntario
7h 47m
1 stop
GRK9:45 amKilleen Fort Hood Regional
Apr 7
GRK7:09 pmKilleen Fort Hood Regional
5h 27m
1 stop
ONT10:36 pmOntario
$348
American Airlines
Apr 24
ONT2:08 pmOntario
5h 44m
1 stop
GRK9:52 pmKilleen Fort Hood Regional
Apr 28
GRK7:09 pmKilleen Fort Hood Regional
5h 27m
1 stop
ONT10:36 pmOntario
$361
American Airlines
Apr 24
ONT7:35 pmOntario
12h 00m
2 stops
GRK9:35 amKilleen Fort Hood Regional
Apr 28
GRK5:00 amKilleen Fort Hood Regional
7h 09m
1 stop
ONT10:09 amOntario
$366

momondo Fare Finder

 
Customize your flight search to find flights from Ontario 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, momondo users made 832,500 searches. Data last updated February 26, 2026.
Use the filters below to find and compare flights from Ontario to Killeen that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Thu 4/2

11:58 pm-9:45 am

1 stop7h 47m

Killeen Fort Hood Regional

Tue 4/7

7:09 pm-10:36 pm

1 stop5h 27m

$348

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Fri 4/24

2:08 pm-9:52 pm

1 stop5h 44m

Killeen Fort Hood Regional

Tue 4/28

7:09 pm-10:36 pm

1 stop5h 27m

$361

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Fri 4/24

7:35 pm-9:35 am

2 stops12h 00m

Killeen Fort Hood Regional

Tue 4/28

5:00 am-10:09 am

1 stop7h 09m

$366

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Fri 4/24

7:35 pm-9:35 am

2 stops12h 00m

Killeen Fort Hood Regional

Tue 4/28

11:58 am-6:24 pm

2 stops8h 26m

$371

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Sat 5/30

11:59 pm-9:34 am

1 stop7h 35m

Killeen Fort Hood Regional

Fri 6/12

7:21 pm-11:59 pm

1 stop6h 38m

$421

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Thu 4/2

11:58 pm-9:45 am

1 stop7h 47m

Killeen Fort Hood Regional

Tue 4/7

5:00 am-4:22 pm

2 stops13h 22m

$466

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Thu 4/9

11:59 pm-9:35 am

1 stop7h 36m

Killeen Fort Hood Regional

Sun 4/12

7:09 pm-11:46 pm

1 stop6h 37m

$470

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Thu 4/9

7:35 pm-9:35 am

2 stops12h 00m

Killeen Fort Hood Regional

Sun 4/12

7:09 pm-11:46 pm

1 stop6h 37m

$475

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Thu 4/2

11:58 pm-9:45 am

1 stop7h 47m

Killeen Fort Hood Regional

Tue 4/7

11:58 am-6:24 pm

2 stops8h 26m

$478

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Tue 3/24

11:58 pm-9:45 am

1 stop7h 47m

Killeen Fort Hood Regional

Wed 4/1

6:33 pm-10:30 pm

1 stop5h 57m

$480

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Killeen from

How to get the cheapest flight ticket from Ontario to Killeen

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 airlines fly to Killeen?

Southwest, American Airlines and Delta are the top three most popular airlines that fly to Killeen from Ontario according to our data. Southwest is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Killeen. Keep in mind that there are 8 different airlines that fly to Killeen on a routine basis, so you have a few additional options to choose from.

When to book flights from Ontario to Killeen

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Killeen according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Killeen (ONT to GRK) flight deals and tips

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

Fastest flight time

5h 07m

Direct flights

None
The fastest flight from Ontario to Killeen takes 5h 07m
There are no direct flights from Ontario to Killeen. There are no popular flight routes from Ontario to Killeen.
Search flight deals

  • How far is Ontario to Killeen Fort Hood Regional by plane?

    The distance between Ontario and Killeen Fort Hood Regional is about 1174.8 mi. Flights usually cover this in 5h 07m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Ontario Airport to Killeen Fort Hood Regional Airport were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Killeen Fort Hood Regional Airport.

  • What documentation or ID do you need to fly to Killeen Fort Hood Regional Airport?

    The necessary travel and health documents for your Killeen Fort Hood Regional Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Ontario to Killeen?

Best airlines flying from Ontario to Killeen

Compare and see reviews for airlines that fly from Ontario to Killeen with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $304Free CancellationRating
7.2
11,352 reviews
Search American Airlines flights

Traveling to a place near Killeen?

Book flights to Killeen if you plan to visit one of these locations
Temple
Copperas Cove
Salado
Fort Hood

Why use momondo?

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

Finding the right flight to Killeen from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Killeen quick and easy, saving you time and money.

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

momondo does allow users to show only those flights to Killeen from Ontario which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to Killeen from Ontario. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are not ready to book a flight from Ontario to Killeen now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Killeen and let you know when they change.

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