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Cheap flights from Ontario to Killeen from $390

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Killeen departing on 7/18. 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
1 adult, Economy, 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
7:00 am - 2:38 pm
ONT
-
GRK
5h 38m
1 stop
American Airlines Logo
5:00 am - 6:15 pm
GRK
-
ONT
15h 15m
2 stops
$608American Airlines
Sat, Aug 1 - Sat, Aug 15
American Airlines Logo
1:11 pm - 11:39 pm
ONT
-
GRK
8h 28m
2 stops
American Airlines Logo
5:00 am - 6:15 pm
GRK
-
ONT
15h 15m
2 stops
$614American Airlines
Sat, Aug 1 - Sat, Aug 15
American Airlines Logo
5:45 am - 2:37 pm
ONT
-
GRK
6h 52m
1 stop
American Airlines Logo
5:00 am - 9:31 am
GRK
-
ONT
6h 31m
1 stop
$615American Airlines
Wed, Jun 17 - Wed, Jun 24
American Airlines Logo
2:18 pm - 11:38 pm
ONT
-
GRK
7h 20m
1 stop
American Airlines Logo
10:04 am - 6:21 pm
GRK
-
ONT
10h 17m
2 stops
$620American Airlines
Wed, Jun 17 - Wed, Jun 24
American Airlines Logo
1:11 pm - 11:38 pm
ONT
-
GRK
8h 27m
2 stops
American Airlines Logo
7:21 pm - 10:32 pm
GRK
-
ONT
5h 11m
1 stop
$622American Airlines
Wed, Jul 1 - Tue, Jul 7
American Airlines Logo
1:11 pm - 11:38 pm
ONT
-
GRK
8h 27m
2 stops
American Airlines Logo
10:04 am - 6:21 pm
GRK
-
ONT
10h 17m
2 stops
$625American Airlines
Wed, Jun 17 - Wed, Jun 24
American Airlines Logo
1:11 pm - 11:38 pm
ONT
-
GRK
8h 27m
2 stops
American Airlines Logo
12:54 pm - 6:18 pm
GRK
-
ONT
7h 24m
2 stops
$627American Airlines
Wed, Jul 1 - Tue, Jul 7
American Airlines Logo
5:34 am - 2:38 pm
ONT
-
GRK
7h 04m
1 stop
American Airlines Logo
5:00 am - 9:29 am
GRK
-
ONT
6h 29m
1 stop
$729American Airlines
Tue, Jul 21 - Mon, Jul 27
American Airlines Logo
1:11 pm - 11:39 pm
ONT
-
GRK
8h 28m
2 stops
American Airlines Logo
7:24 pm - 11:59 pm
GRK
-
ONT
6h 35m
1 stop
$734American Airlines
Tue, Jul 21 - Mon, Jul 27
American Airlines Logo
1:11 pm - 11:39 pm
ONT
-
GRK
8h 28m
2 stops
American Airlines Logo
3:08 pm - 9:43 pm
GRK
-
ONT
8h 35m
2 stops
$739American Airlines
Tue, Jul 21 - Mon, Jul 27

American Airlines flights from Ontario to Killeen

Our best American Airlines deals on Ontario to Killeen flight tickets
American Airlines
Aug 1
ONT7:00 amOntario
5h 38m
1 stop
GRK2:38 pmKilleen Fort Hood Regional
Aug 15
GRK5:00 amKilleen Fort Hood Regional
15h 15m
2 stops
ONT6:15 pmOntario
$608
American Airlines
Aug 1
ONT1:11 pmOntario
8h 28m
2 stops
GRK11:39 pmKilleen Fort Hood Regional
Aug 15
GRK5:00 amKilleen Fort Hood Regional
15h 15m
2 stops
ONT6:15 pmOntario
$614
American Airlines
Jun 17
ONT5:45 amOntario
6h 52m
1 stop
GRK2:37 pmKilleen Fort Hood Regional
Jun 24
GRK5:00 amKilleen Fort Hood Regional
6h 31m
1 stop
ONT9:31 amOntario
$615

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 June 4, 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

Cheapest round-trip

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Sat 8/1

7:00 am-2:38 pm

1 stop5h 38m

Killeen Fort Hood Regional

Sat 8/15

5:00 am-6:15 pm

2 stops15h 15m

$608

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Sat 8/1

1:11 pm-11:39 pm

2 stops8h 28m

Killeen Fort Hood Regional

Sat 8/15

5:00 am-6:15 pm

2 stops15h 15m

$614
Quickest round-trip

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Wed 6/17

5:45 am-2:37 pm

1 stop6h 52m

Killeen Fort Hood Regional

Wed 6/24

5:00 am-9:31 am

1 stop6h 31m

$615

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Wed 6/17

2:18 pm-11:38 pm

1 stop7h 20m

Killeen Fort Hood Regional

Wed 6/24

10:04 am-6:21 pm

2 stops10h 17m

$620

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Wed 7/1

1:11 pm-11:38 pm

2 stops8h 27m

Killeen Fort Hood Regional

Tue 7/7

7:21 pm-10:32 pm

1 stop5h 11m

$622

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Wed 6/17

1:11 pm-11:38 pm

2 stops8h 27m

Killeen Fort Hood Regional

Wed 6/24

10:04 am-6:21 pm

2 stops10h 17m

$625

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Wed 7/1

1:11 pm-11:38 pm

2 stops8h 27m

Killeen Fort Hood Regional

Tue 7/7

12:54 pm-6:18 pm

2 stops7h 24m

$627

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Tue 7/21

5:34 am-2:38 pm

1 stop7h 04m

Killeen Fort Hood Regional

Mon 7/27

5:00 am-9:29 am

1 stop6h 29m

$729

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Tue 7/21

1:11 pm-11:39 pm

2 stops8h 28m

Killeen Fort Hood Regional

Mon 7/27

7:24 pm-11:59 pm

1 stop6h 35m

$734

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Tue 7/21

1:11 pm-11:39 pm

2 stops8h 28m

Killeen Fort Hood Regional

Mon 7/27

3:08 pm-9:43 pm

2 stops8h 35m

$739

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
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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 is the cheapest airline that flies from Ontario to Killeen Fort Hood Regional?

American Airlines is the most popular carrier operating from Ontario to Killeen Fort Hood Regional

What airlines fly to Killeen?

Southwest, Delta and American Airlines 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 38% of people opting to fly with this airline when traveling to Killeen. Keep in mind that there are 7 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 29m

Direct flights

None
The fastest flight from Ontario to Killeen takes 5h 29m
There are no direct flights from Ontario to Killeen. There are no popular flight routes from Ontario to Killeen.
Search flight deals

Frequently asked questions about flying from Ontario to Killeen

  • 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 29m, 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
7.1
11,640 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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