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Cheap flights from Ontario to Killeen from $244

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 12/14. 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
7:16 am - 4:07 pmONT-GRK
6h 51m1 stop
American Airlines Logo
9:48 am - 2:18 pmGRK-ONT
6h 30m1 stop
$385American Airlines
Find Deal
Wed, Jan 7 - Sat, Jan 10
American Airlines Logo
3:09 pm - 10:43 pmONT-GRK
5h 34m1 stop
American Airlines Logo
10:36 am - 6:20 pmGRK-ONT
9h 44m2 stops
$390American Airlines
Find Deal
Wed, Jan 7 - Sat, Jan 10
American Airlines Logo
9:59 am - 10:43 pmONT-GRK
10h 44m2 stops
American Airlines Logo
10:36 am - 6:20 pmGRK-ONT
9h 44m2 stops
$395American Airlines
Find Deal
Wed, Jan 7 - Sat, Jan 10
American Airlines Logo
6:15 am - 6:09 pmONT-GRK
9h 54m2 stops
American Airlines Logo
12:01 pm - 10:20 pmGRK-ONT
12h 19m2 stops
$450American Airlines
Find Deal
Sat, Feb 21 - Wed, Feb 25
American Airlines Logo
10:50 am - 8:33 pmONT-GRK
7h 43m1 stop
American Airlines Logo
6:32 pm - 10:14 pmGRK-ONT
5h 42m1 stop
$487American Airlines
Find Deal
Sun, Dec 21 - Sat, Dec 27
American Airlines Logo
6:00 am - 3:37 pmONT-GRK
7h 37m1 stop
American Airlines Logo
7:15 pm - 10:28 pmGRK-ONT
5h 13m1 stop
$495American Airlines
Find Deal
Sat, Dec 13 - Wed, Dec 17
American Airlines Logo
6:00 am - 3:37 pmONT-GRK
7h 37m1 stop
American Airlines Logo
7:15 pm - 10:28 pmGRK-ONT
5h 13m1 stop
$567American Airlines
Find Deal
Sun, Dec 14 - Wed, Dec 17
American Airlines Logo
3:04 pm - 10:18 pmONT-GRK
5h 14m1 stop
American Airlines Logo
11:57 am - 6:16 pmGRK-ONT
8h 19m1 stop
$585American Airlines
Find Deal
Sat, Dec 13 - Fri, Dec 19
American Airlines Logo
6:00 am - 3:37 pmONT-GRK
7h 37m1 stop
American Airlines Logo
6:53 pm - 11:55 pmGRK-ONT
7h 02m1 stop
$631American Airlines
Find Deal
Sun, Dec 14 - Sun, Dec 14
American Airlines Logo
7:03 am - 3:37 pmONT-GRK
6h 34m1 stop
American Airlines Logo
11:57 am - 6:16 pmGRK-ONT
8h 19m1 stop
$634American Airlines
Find Deal
Sun, Dec 14 - Fri, Dec 19

American Airlines flights from Ontario to Killeen

Our best American Airlines deals on Ontario to Killeen flight tickets
American Airlines
Jan 7
ONT7:16 amOntario
6h 51m
1 stop
GRK4:07 pmKilleen Fort Hood Regional
Jan 10
GRK9:48 amKilleen Fort Hood Regional
6h 30m
1 stop
ONT2:18 pmOntario
$385
Find similar
American Airlines
Jan 7
ONT3:09 pmOntario
5h 34m
1 stop
GRK10:43 pmKilleen Fort Hood Regional
Jan 10
GRK10:36 amKilleen Fort Hood Regional
9h 44m
2 stops
ONT6:20 pmOntario
$390
Find similar
American Airlines
Jan 7
ONT9:59 amOntario
10h 44m
2 stops
GRK10:43 pmKilleen Fort Hood Regional
Jan 10
GRK10:36 amKilleen Fort Hood Regional
9h 44m
2 stops
ONT6:20 pmOntario
$395
Find similar

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 November 20, 2025.
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

Wed 1/7

7:16 am-4:07 pm

1 stop6h 51m

Killeen Fort Hood Regional

Sat 1/10

9:48 am-2:18 pm

1 stop6h 30m

$385

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Wed 1/7

3:09 pm-10:43 pm

1 stop5h 34m

Killeen Fort Hood Regional

Sat 1/10

10:36 am-6:20 pm

2 stops9h 44m

$390

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Wed 1/7

9:59 am-10:43 pm

2 stops10h 44m

Killeen Fort Hood Regional

Sat 1/10

10:36 am-6:20 pm

2 stops9h 44m

$395

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Sat 2/21

6:15 am-6:09 pm

2 stops9h 54m

Killeen Fort Hood Regional

Wed 2/25

12:01 pm-10:20 pm

2 stops12h 19m

$450

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Sun 12/21

10:50 am-8:33 pm

1 stop7h 43m

Killeen Fort Hood Regional

Sat 12/27

6:32 pm-10:14 pm

1 stop5h 42m

$487

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Sat 12/13

6:00 am-3:37 pm

1 stop7h 37m

Killeen Fort Hood Regional

Wed 12/17

7:15 pm-10:28 pm

1 stop5h 13m

$495

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Sun 12/14

6:00 am-3:37 pm

1 stop7h 37m

Killeen Fort Hood Regional

Wed 12/17

7:15 pm-10:28 pm

1 stop5h 13m

$567

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Sat 12/13

3:04 pm-10:18 pm

1 stop5h 14m

Killeen Fort Hood Regional

Fri 12/19

11:57 am-6:16 pm

1 stop8h 19m

$585

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Sun 12/14

6:00 am-3:37 pm

1 stop7h 37m

Killeen Fort Hood Regional

Sun 12/14

6:53 pm-11:55 pm

1 stop7h 02m

$631

OntarioKilleen

ONT - GRK

ONTGRK

Ontario

Sun 12/14

7:03 am-3:37 pm

1 stop6h 34m

Killeen Fort Hood Regional

Fri 12/19

11:57 am-6:16 pm

1 stop8h 19m

$634

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 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 day to depart on your flight to Killeen?

On average, the least expensive day to fly to Killeen from Ontario is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $346. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Killeen is Monday, with ticket prices averaging around $677.

What is the cheapest time of day to depart on your flight to Killeen?

According to our data, the cheapest time of day to fly to Killeen is in the evening. momondo users have found flights departing from Ontario to Killeen in the evening for as low as $412. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Killeen are more costly in the afternoon, with an average ticket price of $492. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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

Direct flights

None
There are no direct flights from Ontario to Killeen. There are no popular flight routes from Ontario to Killeen.
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  • 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 14m, 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
11,047 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
Salado
Copperas Cove
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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