$259 Cheap Flights from Ontario (ONT) to Killeen (GRK)

View $259 flight on Sat, Feb 21, 2026Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Killeen, TX (GRK-Killeen-Fort Hood Regional)

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Cheap Flights from Ontario to Killeen (ONT-GRK)

Prices were available within the past 7 days and start at $259 for one-way flights and $385 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Dec 2 - Tue, Dec 9
ONT
Ontario
GRK
Killeen
$385 Roundtrip, found 16 hours ago
$385
Roundtrip
found 16 hours ago
Select American Airlines flight, departing Tue, Dec 2 from Ontario to Killeen, returning Tue, Dec 9, priced at $385 found 16 hours ago
American Airlines
Fri, Feb 20 - Tue, Mar 10
ONT
Ontario
GRK
Killeen
$390 Roundtrip, found 2 days ago
$390
Roundtrip
found 2 days ago
Select American Airlines flight, departing Fri, Feb 20 from Ontario to Killeen, returning Tue, Mar 10, priced at $390 found 2 days ago
American Airlines
Tue, Dec 2 - Sat, Dec 13
ONT
Ontario
GRK
Killeen
$390 Roundtrip, found 22 hours ago
$390
Roundtrip
found 22 hours ago
Select American Airlines flight, departing Tue, Dec 2 from Ontario to Killeen, returning Sat, Dec 13, priced at $390 found 22 hours ago
American Airlines
Thu, Dec 25 - Sat, Jan 10
ONT
Ontario
GRK
Killeen
$395 Roundtrip, found 2 days ago
$395
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu, Dec 25 from Ontario to Killeen, returning Sat, Jan 10, priced at $395 found 2 days ago
American Airlines
Thu, Dec 25 - Sat, Jan 10
ONT
Ontario
GRK
Killeen
$400 Roundtrip, found 4 days ago
$400
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, Dec 25 from Ontario to Killeen, returning Sat, Jan 10, priced at $400 found 4 days ago
American Airlines
Sat, May 16 - Tue, Jun 2
ONT
Ontario
GRK
Killeen
$425 Roundtrip, found 2 days ago
$425
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sat, May 16 from Ontario to Killeen, returning Tue, Jun 2, priced at $425 found 2 days ago
American Airlines
Wed, Dec 3 - Tue, Dec 9
ONT
Ontario
GRK
Killeen
$430 Roundtrip, found 16 hours ago
$430
Roundtrip
found 16 hours ago
Select American Airlines flight, departing Wed, Dec 3 from Ontario to Killeen, returning Tue, Dec 9, priced at $430 found 16 hours ago
American Airlines
Wed, Dec 3 - Sat, Dec 13
ONT
Ontario
GRK
Killeen
$435 Roundtrip, found 22 hours ago
$435
Roundtrip
found 22 hours ago
Select American Airlines flight, departing Wed, Dec 3 from Ontario to Killeen, returning Sat, Dec 13, priced at $435 found 22 hours ago
American Airlines
Fri, Oct 31 - Sat, Nov 8
ONT
Ontario
GRK
Killeen
$440 Roundtrip, found 12 hours ago
$440
Roundtrip
found 12 hours ago
Select American Airlines flight, departing Fri, Oct 31 from Ontario to Killeen, returning Sat, Nov 8, priced at $440 found 12 hours ago
American Airlines
Thu, Dec 4 - Tue, Dec 9
ONT
Ontario
GRK
Killeen
$442 Roundtrip, found 16 hours ago
$442
Roundtrip
found 16 hours ago
Select American Airlines flight, departing Thu, Dec 4 from Ontario to Killeen, returning Tue, Dec 9, priced at $442 found 16 hours ago
American Airlines
Thu, Dec 25 - Thu, Jan 8
ONT
Ontario
GRK
Killeen
$447 Roundtrip, found 2 days ago
$447
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu, Dec 25 from Ontario to Killeen, returning Thu, Jan 8, priced at $447 found 2 days ago

Alternative airports near Killeen

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Killeen-Fort Hood Regional GRK. Cheapest option available. Average driving time to city center is 13 minutes. Flights from $420
GRK
Killeen-Fort Hood Regional
Cheapest
Average driving time to city center13 min
Flights from $420

Frequently asked questions

How much does a flight from Los Angeles - Ontario Intl. Airport (ONT) to Killeen-Fort Hood Regional Airport (GRK) cost?
Get a cheap one-way flight from $259 or cheap return flight from $385 from Los Angeles - Ontario Intl. Airport (ONT) to Killeen-Fort Hood Regional Airport (GRK) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Los Angeles - Ontario Intl. Airport (ONT) to Killeen-Fort Hood Regional Airport (GRK)?
December is the most affordable month to fly from ONT to GRK. Traveling during quieter months is often the key to better flight prices.
What is the cheapest airline that flies from Los Angeles - Ontario Intl. Airport (ONT) to Killeen-Fort Hood Regional Airport (GRK)?
To find the cheapest airline that'll fly you from ONT to GRK, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Los Angeles - Ontario Intl. Airport (ONT) to Killeen-Fort Hood Regional Airport (GRK)?
Direct flights from Los Angeles - Ontario Intl. Airport (ONT) to Killeen-Fort Hood Regional Airport (GRK) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from ONT to GRK?
Typically you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can change based on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Los Angeles - Ontario Intl. Airport (ONT) to Killeen-Fort Hood Regional Airport (GRK)?
Book a flight from Los Angeles - Ontario Intl. Airport (ONT) to Killeen-Fort Hood Regional Airport (GRK) that leaves before 3 PM to reduce the likelihood of delays. Departures after this time are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Los Angeles - Ontario Intl. Airport (ONT) to Killeen-Fort Hood Regional Airport (GRK) last-minute?
Booking your ticket from ONT to GRK shortly before your trip is generally more expensive. However, if there's some wiggle room with your travel dates and times, you could score a cheap last-minute fare.
Is it cheaper to book an ONT to GRK flight and hotel package?
Securing an ONT to GRK flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Choose from our wide range of accommodations and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Los Angeles - Ontario Intl. Airport (ONT) to Killeen-Fort Hood Regional Airport (GRK)?
In most instances, you can cancel or modify your ONT to GRK flight. However, there may be additional charges, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you want further information, visit our Customer Service portal.

Travel information

Origin airport
Los Angeles - Ontario Intl.
Destination airport
Killeen-Fort Hood Regional
Airlines serving
American Airlines
Roundtrip price
$384
Distance
1167 mi

Book with confidence

Ontario to Killeen Flights

The cheapest times to fly from Ontario to Killeen

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Ontario to Killeen are during the month of December. You can find some of the cheapest flights from Ontario to Killeen with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Ontario to Killeen

Sunday is one of the best days to book for cheap flights from Ontario to Killeen: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Ontario to Killeen

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Ontario to Killeen in 2025. You can also book with separate airlines for your outbound and return journeys, from $259 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Ontario to Killeen flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Ontario to Killeen airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Ontario to Killeen Flights

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*Available to One Key members.