ONT - GRK

$362 Find Cheap Flights from Ontario to Killeen

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Killeen departing on 9/19. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Killeen

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Killeen, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Killeen, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Ontario to Killeen (ONT-GRK)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Killeen that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Killeen

Fri, Sep 19 - Sat, Oct 4
American Airlines Logo
2:54 pm - 10:32 pmONT-GRK
5h 38m1 stop
American Airlines Logo
4:41 pm - 10:33 pmGRK-ONT
7h 52m1 stop
$362American Airlines
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Fri, Sep 19 - Sat, Oct 4
American Airlines Logo
2:54 pm - 10:32 pmONT-GRK
5h 38m1 stop
American Airlines Logo
10:07 am - 6:16 pmGRK-ONT
10h 09m2 stops
$367American Airlines
Find Deal
Fri, Sep 19 - Sat, Oct 4
American Airlines Logo
1:10 pm - 10:32 pmONT-GRK
7h 22m2 stops
American Airlines Logo
5:16 am - 11:56 amGRK-ONT
8h 40m2 stops
$372American Airlines
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Wed, Jul 16 - Sat, Jul 26
American Airlines Logo
2:37 pm - 11:26 pmONT-GRK
6h 49m1 stop
American Airlines Logo
7:58 pm - 11:54 pmGRK-ONT
5h 56m1 stop
$375American Airlines
Find Deal
Wed, Jul 16 - Wed, Jul 30
American Airlines Logo
6:15 am - 7:28 pmONT-GRK
11h 13m2 stops
American Airlines Logo
7:58 pm - 11:54 pmGRK-ONT
5h 56m1 stop
$380American Airlines
Find Deal
Wed, Jul 16 - Wed, Jul 30
American Airlines Logo
6:15 am - 7:28 pmONT-GRK
11h 13m2 stops
American Airlines Logo
5:16 am - 12:00 pmGRK-ONT
8h 44m2 stops
$385American Airlines
Find Deal
Wed, Jul 16 - Sat, Jul 26
American Airlines Logo
12:55 pm - 11:26 pmONT-GRK
8h 31m2 stops
American Airlines Logo
4:29 pm - 9:38 pmGRK-ONT
7h 09m2 stops
$413American Airlines
Find Deal
Thu, Jul 31 - Fri, Aug 8
American Airlines Logo
12:59 am - 10:01 amONT-GRK
7h 02m1 stop
American Airlines Logo
12:11 pm - 4:06 pmGRK-ONT
5h 55m1 stop
$419American Airlines
Find Deal
Mon, Aug 4 - Tue, Aug 12
American Airlines Logo
12:59 am - 10:01 amONT-GRK
7h 02m1 stop
American Airlines Logo
5:16 am - 9:58 amGRK-ONT
6h 42m1 stop
$420American Airlines
Find Deal
Thu, Jul 31 - Fri, Aug 8
American Airlines Logo
12:59 am - 10:01 amONT-GRK
7h 02m1 stop
American Airlines Logo
10:32 am - 5:52 pmGRK-ONT
9h 20m2 stops
$424American Airlines
Find Deal
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KAYAK's insights & trends for Ontario to Killeen flights

Get data-powered insights and trends into flights from Ontario to Killeen to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Ontario to Killeen?

The average price of all round-trip flights from Ontario to Killeen clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Killeen on a Saturday, as we generally find the cheapest rates on that day for this route. On the other hand, Thursday is the most expensive day to fly from Ontario to Killeen. For your return ticket, we recommend flying on a Saturday and avoiding Mondays for the best deals.

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Good to know

Cheapest flight$362
Flight from Ontario to Killeen

When to book flights from Ontario to Killeen

Are your dates flexible? Find out the best times to travel from Ontario to Killeen based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Killeen

  • What is the cheapest flight from Ontario to Killeen?

    In the last 3 days, the lowest price for a flight from Ontario to Killeen was $362 for a round-trip ticket.

  • Do I need a passport to fly between Ontario and Killeen?

    No, a passport isn't needed to fly from Ontario to Killeen. However, local authorities might ask for an official ID.

  • Which aircraft models fly most regularly from Ontario to Killeen?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Killeen?

    oneworld is the only airline alliance operating flights between Ontario and Killeen.

  • How does KAYAK find such low prices on flights from Ontario to Killeen?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Killeen.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Killeen?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Killeen from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Killeen?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Killeen with an airline and back to Ontario with another airline. Booking your flights between Ontario and GRK can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Killeen?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Killeen from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Ontario to Killeen

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Killeen. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Killeen? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
American AirlinesOverall score based on 10000 reviews
6.5Food
6.9Entertainment
7.5Boarding
8.0Crew
7.2Comfort
Airline reviews

The flight delay in Dallas created a domino effect that impacted all connecting flights, leading to an increase in the number of connections. As a result, I missed my flight from Casablanca to Marrakech due to the tight turnaround when landing in Casablanca. CMN Airport was understaffed; only one employee was available to assist passengers while others just stood by and watched. It was an extremely frustrating situation. Many passengers were crying and banging their hands on the counter while talking to customer service representative Allabough. Unfortunately, Allabough couldn’t change my flight in the system. At the same time, I was on the phone with an American Airlines customer service representative named Solomon, who said he couldn’t make the change either. So, I decided to take an ONYA Voyages train from Casablanca to Marrakech to reach my destination on Friday, June 26. It turned out to be an unpredictable trip.

4.0 OkayAnonymous, Jun 2025BNA - DFW
Read more American Airlines reviews

The flight delay in Dallas created a domino effect that impacted all connecting flights, leading to an increase in the number of connections. As a result, I missed my flight from Casablanca to Marrakech due to the tight turnaround when landing in Casablanca. CMN Airport was understaffed; only one employee was available to assist passengers while others just stood by and watched. It was an extremely frustrating situation. Many passengers were crying and banging their hands on the counter while talking to customer service representative Allabough. Unfortunately, Allabough couldn’t change my flight in the system. At the same time, I was on the phone with an American Airlines customer service representative named Solomon, who said he couldn’t make the change either. So, I decided to take an ONYA Voyages train from Casablanca to Marrakech to reach my destination on Friday, June 26. It turned out to be an unpredictable trip.

Pretty bad gate mgmt upon arrival. No open gates and we had to wait at midnight. Shouldn’t be a surprise that an aircraft is coming in.

Comfortable plane ride however on delays disappointment no real details as to why the delays when other flights are leaving the airport

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

I’m impressed that we were on time in Sacramento after having a late departure in Newark and our made it. The staff was friendly and warm.

5.5 hour delay with no explanation on why, along with no proactive effort to reaccomodate me.

Plane, flight, crew, captain were all great. The first flight had a Chipotle box lunch...delicious.

Plane, flight, crew, captain were all great. The first flight had a Chipotle box lunch...delicious. this return flight not as tasty, but filling.

So awful Unreliable Unfriendly Bad Mad Mean Smelly Hot Late Overbooked Understaffed Expensive Cramped Narcs If they were a fruit they’d be rotten durian

It’s a great flight. Service is good. Staff is awesome.

Everything you need to know for your flight from Ontario to Killeen

Information on your arrival and departure airports

Ontario (ONT)
Killeen (GRK)

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