$295+ Cheap flights from Ontario to Killeen (ONT - GRK)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/16. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — GRK
Jul 8 — Jul 151
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Ontario to Killeen
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Killeen (GRK). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 3, 2025.
Round-trip from | $305 (American Airlines) |
|---|---|
One-way from | $295 (American Airlines) |
Popular in | July |
Cheapest in | May |
Average price | $728 |
Find flight deals from Ontario to Killeen
Cheapest flights from Ontario to KilleenExplore the most affordable flight options available from Ontario to Killeen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.
Explore the most affordable flight options available from Ontario to Killeen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.
This American Airlines deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/208:15 amONT - GRK
1 stop5h 55mAmerican Airlines
Sat 10/44:40 pmGRK - ONT
1 stop7h 53mAmerican Airlines
Deal found 7/1![American Airlines logo]()
$305
Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated July 3, 2025.
Use the filters below to find and compare flights from Ontario to Killeen that are best for you.
Fly from
Ontario
Fly to
Killeen
Route
Depart
Return
Price
OntarioKilleen
ONT - GRK
ONTGRK
Ontario
Sat 9/20
8:15 am-4:10 pm
1 stop5h 55m
Killeen Fort Hood Regional
Sat 10/4
4:40 pm-10:33 pm
1 stop7h 53m
$305
OntarioKilleen
ONT - GRK
ONTGRK
Ontario
Wed 7/16
2:37 pm-11:26 pm
1 stop6h 49m
$295
Best time to book a flight from Ontario to Killeen
Have a flexible travel schedule? Discover the best time to fly to Killeen from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Ontario to Killeen
What is the cheapest month to book a flight from Ontario to Killeen?
Currently, January is the cheapest month in which you can book a flight from Ontario to Killeen (average of $316). Flying from Ontario to Killeen in December is currently the most expensive (average of $468). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from ONT to GRK?
Find hourly flight availability from Ontario to Killeen. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 3, 2025.
When flying from Ontario to Killeen, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 17% versus a flight in the morning.
Reviews of airlines servicing Killeen
Get insights into the airlines that provide service to Killeen. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Killeen. Reviews last updated July 3, 2025.
Get a feel of what it's like to fly with American Airlines from Ontario to Killeen by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.2
Crew
8.0
Boarding
7.5
Overall
7.2
Entertainment
6.9
Food
6.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2025
PIT - DFW
Comfort
7.2
Crew
8.0
Boarding
7.5
Overall
7.2
Entertainment
6.9
Food
6.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2025
PIT - DFW
Related info for your journey
Find useful and relevant information for your journey from Ontario to Killeen. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Ontario?
Book flights to Ontario if you plan to visit one of these locationsTemple
Copperas Cove
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Alternative routes for Ontario to Killeen
See prices for flight routes from nearby airports that may be better suited for you.
Top airline flying from Ontario to Killeen
Discover the top airline that operate flights from Ontario to Killeen. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 3, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$316 | Average$384 | FlexibilityNo cancel fee | On-time71% |